-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, MxDa+LNz3wczRGk8hz1d4cT7PbWFWUhXMV5GakAcQlwQm/s3CVSY36VxbMrsN6ES uJ3prFXqMvEdPHTXnPrMtA== 0001047469-08-008146.txt : 20080715 0001047469-08-008146.hdr.sgml : 20080715 20080714202720 ACCESSION NUMBER: 0001047469-08-008146 CONFORMED SUBMISSION TYPE: 424B2 PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20080715 DATE AS OF CHANGE: 20080714 FILER: COMPANY DATA: COMPANY CONFORMED NAME: CREDIT SUISSE / /FI CENTRAL INDEX KEY: 0001053092 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 8880 [8880] IRS NUMBER: 000000000 FILING VALUES: FORM TYPE: 424B2 SEC ACT: 1933 Act SEC FILE NUMBER: 333-132936-14 FILM NUMBER: 08951686 BUSINESS ADDRESS: STREET 1: P O BOX 9008070 STREET 2: 212-225-2000 CITY: ZURICH SWITZERLAND STATE: V8 ZIP: 10006 FORMER COMPANY: FORMER CONFORMED NAME: CREDIT SUISSE FIRST BOSTON / /FI DATE OF NAME CHANGE: 19980115 424B2 1 a2186661z424b2.htm 424B2
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INDEX SUPPLEMENT TO THE PROSPECTUS SUPPLEMENT DATED MARCH 24, 2008,
AND PROSPECTUS DATED MARCH 29, 2007

Credit Suisse

Medium-Term Notes

Credit Suisse from time to time may offer certain notes as part of our Medium-Term Notes, linked to a reference index or a basket of reference indices. This prospectus supplement, which we refer to as an "index supplement", describes some of the potential reference indices to which the notes may be linked, as well as related matters concerning the relationship, if any, between Credit Suisse and the sponsors or publishers of each such reference index.

The specific terms of each note offered will be described in the applicable product supplement and pricing supplement.

You should read this index supplement, the related prospectus supplement dated March 24, 2008, the related prospectus dated March 29, 2007, any applicable free writing prospectus and the applicable product supplement and pricing supplement carefully before you invest. If the terms described in the applicable pricing supplement are different or inconsistent with those described herein (or with those described in the prospectus supplement, prospectus, any applicable product supplement or any applicable free writing prospectus), the terms described in the applicable pricing supplement will supersede.

This index supplement describes only select indices to which the notes may be linked. We do not guarantee that we will offer notes linked to any of the indices described herein. In addition, we may offer notes linked to one or more indices that are not described herein. In such an event, we will describe any such additional index or indices in the applicable pricing supplement or in an applicable product supplement.

Reference Indices

The reference indices described in this index supplement are as follows:

•: AMEX Hong Kong 30 Index
•: Dow Jones EURO STOXX 50® Index
•: FTSE 100™ Index
•: FTSE/Xinhua China 25™ Index
•: Korea Stock Price Index 200
•: MSCI Singapore^SM Index
•: MSCI Taiwan^SM Index
•: S&P 500® Index
•: TOPIX® Index

Please refer to the "Risk Factors" section of this index supplement and the accompanying product supplement for risks related to an investment in the notes.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these notes or determined if this index supplement or the product supplement, prospectus supplement or prospectus to which it relates are truthful or complete. Any representation to the contrary is a criminal offense.

The securities are not deposit liabilities and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency of the United States, Switzerland or any other jurisdiction.

Credit Suisse

The date of this index supplement is April 14, 2008.

TABLE OF CONTENTS

		Page
THE NOTES		IS-1
RISK FACTORS		IS-3
THE REFERENCE INDICES		IS-7
	THE AMEX HONG KONG 30 INDEX	IS-7
	THE DOW JONES EURO STOXX 50® INDEX	IS-11
	THE FTSE 100™ INDEX	IS-15
	THE FTSE/XINHUA CHINA 25 INDEX	IS-17
	THE KOREA STOCK PRICE INDEX 200	IS-21
	THE MSCI SINGAPORE INDEX	IS-25
	THE MSCI TAIWAN INDEX	IS-29
	S&P 500® INDEX	IS-33
	THE TOPIX® INDEX	IS-37

THE NOTES

You should rely only on the information contained in this document or to which we refer you. We have not authorized anyone to provide you with information that is different. This document may only be used where it is legal to sell these securities. The information in this document may only be accurate on the date of this document.

We are offering the securities for sale in those jurisdictions in the United States where it is lawful to make such offers. The distribution of this index supplement or the accompanying product supplement, prospectus supplement or prospectus and the offering of the securities in some jurisdictions may be restricted by law. If you possess this index supplement and the accompanying product supplement, prospectus supplement and prospectus, you should find out about and observe these restrictions. This index supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted or where the person making the offer or sale is not qualified to do so or to any person to whom such offer or sale is not permitted. We refer you to the "Plan of Distribution" section of the accompanying product supplement.

In this index supplement and accompanying product supplement, prospectus supplement and prospectus, unless otherwise specified or the context otherwise requires, references to "we," "us" and "our" are to Credit Suisse and its consolidated subsidiaries, and references to "dollars" and "$" are to U.S. dollars.

Medium-Term Notes

The notes are part of a series of debt securities entitled "Medium-Term Notes" (the "medium-term notes") that we may issue under the indenture, dated March 29, 2007, between Credit Suisse and The Bank of New York, as trustee, from time to time. Terms that apply generally to all medium-term notes are described in the sections titled "Description of Notes" in the accompanying prospectus supplement.

Reference Indices

We have derived all information contained in this index supplement regarding any specified index, including, without limitation, its composition, its method of calculation and changes in its components and its historical closing values, from publicly available information. Such information reflects the policies of, and is subject to change by, the sponsor(s) of each such index.

Each index is developed, calculated and maintained by its respective sponsor(s) and/or publisher. In connection with the offering of the notes, neither we nor any of the agents have participated in the preparation of the information described in the preceding paragraph or made any due diligence inquiry with respect to any index, sponsor(s) or publisher. Neither we nor any of our agents makes any representation or warranty as to the accuracy or completeness of such information or any other publicly available information regarding any index, sponsor(s) or publisher. Furthermore, we cannot give any assurance that all events occurring prior to the date of the applicable pricing supplement (including events that would affect the accuracy or completeness of the publicly available information described in the preceding paragraph) that would affect the level of any index (and therefore the level of any such index at the time we price the notes) have been publicly disclosed. Subsequent disclosure of any such events or the disclosure of or failure to disclose material future events concerning the sponsor of any index could affect the interest, payments at maturity or any other amounts payable on your notes and therefore the market value of the notes in the secondary market, if any.

You, as an investor in the notes, should make your own investigation into any index, sponsor(s) or publisher. The sponsors and publishers are not involved in the offer of the notes in any way and have no obligation to consider your interests as a holder of the notes. The sponsors and/or publishers have

IS-1

no obligation to continue to publish the indices, and may discontinue or suspend publication of any index at any time in their sole discretion.

Historical performance of the indices is not an indication of future performance. Future performance of the indices may differ significantly from historical performance, either positively or negatively.

Information contained on certain websites mentioned below is not incorporated by reference in, and should not be considered part of, this index supplement or the accompanying prospectus supplement and prospectus.

License Agreements

Unless otherwise specified in the applicable pricing supplement, Credit Suisse has contracted with the sponsor or publisher of the index to which your notes may be linked for the rights to use such index and certain associated trademarks or service marks for such index. We generally obtain these licenses either on an individual basis for a particular offering of notes or for a term of years. Although we anticipate that we will continue to enter into and renew such licenses, any such license could be terminated upon the occurrence of certain events in the future.

IS-2

RISK FACTORS

A purchase of the notes involves risks. This section describes significant risks relating to notes that are linked to the various indices described herein. We urge you to read the following information about these risks, together with the other information in this index supplement and the accompanying product supplement, prospectus supplement and prospectus before investing in the notes.

Our right to use any index may be suspended or terminated.

We have been granted, or will be granted, a non-exclusive right to use the indices described in this index supplement and related trademarks in connection with the notes. If we breach our obligations under any license, the sponsors with respect to the index or indices to which such license relates may have the right to terminate the license. If the sponsors choose to terminate their license agreement, we may no longer have the right under the terms of the license agreement to use the index and related trademarks in connection with the notes until their maturity. If our right to use any index to which your notes are linked is suspended or terminated for any reason, it may become difficult for us to determine the level of that index and consequently the interest, payments at maturity or any other amounts payable on your notes. The calculation agent in this case will determine the index level or the fair market value of the notes in its sole discretion.

The index return or basket return, as applicable, for the notes will not be adjusted for changes in exchange rates related to the U.S. dollar that might affect the AMEX Hong Kong 30 Index, the Dow Jones EURO STOXX 50® Index, the FTSE 100™ Index, the FTSE/Xinhua China 25 Index, the KOSPI 200, the MSCI Singapore Index, the MSCI Taiwan Index, or the TOPIX® Index.

Although the stocks composing the AMEX Hong Kong 30 Index, the Dow Jones EURO STOXX 50® Index, the FTSE 100™ Index, the FTSE/Xinhua China 25 Index, the KOSPI 200, the MSCI Singapore Index, the MSCI Taiwan Index, and the TOPIX® Index are traded in currencies other than U.S. dollars, and the notes, which are linked to one or more of the reference indices, are denominated in U.S. dollars, the amount payable on the notes at maturity will not be adjusted for changes in the exchange rate between the U.S. dollar and each of the currencies in which the stocks composing the Dow Jones EURO STOXX 50® Index, the FTSE 100™ Index, the TOPIX® Index, the AMEX Hong Kong 30 Index, the FTSE/Xinhua China 25 Index, the KOSPI 200, the MSCI Singapore Index, and the MSCI Taiwan Index are denominated. Changes in exchange rates, however, may reflect changes in various non-U.S. economies that in turn may affect the index return or basket return, as applicable, for the notes. The amount, if any, we pay in respect of the notes on the maturity date will be determined solely in accordance with the procedures described in "Description of the Notes—Redemption amount" in the accompanying product supplement.

S&P may adjust the S&P 500® Index in a way that affects its level, and S&P has no obligation to consider your interests.

Standard & Poor's, a division of The McGraw-Hill Companies, Inc. ("S&P"), is responsible for calculating and maintaining the S&P 500® Index. S&P can add, delete or substitute the stocks underlying the S&P 500® Index or make other methodological changes that could change the level of the S&P 500® Index. On March 21, 2005, S&P began to use a revised methodology for calculating the S&P 500® Index and on September 16, 2005, S&P completed its transition to the new calculation methodology. You should realize that the changing of companies included in the S&P 500® Index may affect the S&P 500® Index as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, S&P may alter, discontinue or suspend calculation or dissemination of the S&P 500® Index. Any of these actions could adversely affect the value of the notes. S&P has no obligation to consider your interests in calculating or revising the S&P 500® Index. See "The Reference Indices—The S&P 500® Index."

IS-3

STOXX Limited may adjust the Dow Jones EURO STOXX 50® Index in a way that affects its level, and STOXX Limited has no obligation to consider your interests.

STOXX Limited, a joint venture between Deutsche Börse AG, Dow Jones & Company and SWX Swiss Exchange, is responsible for calculating and maintaining the Dow Jones EURO STOXX 50® Index. STOXX Limited can add, delete or substitute the stocks underlying the Dow Jones EURO STOXX 50® Index or make other methodological changes that could change the level of the Dow Jones EURO STOXX 50® Index. You should realize that the changing of companies included in the Dow Jones EURO STOXX 50® Index may affect the Dow Jones EURO STOXX 50® Index as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, STOXX Limited may alter, discontinue or suspend calculation or dissemination of the Dow Jones EURO STOXX 50® Index. Any of these actions could adversely affect the value of the notes. STOXX Limited has no obligation to consider your interests in calculating or revising the Dow Jones EURO STOXX 50® Index. See "The Reference Indices—The Dow Jones EURO STOXX 50® Index."

FTSE International Limited may adjust the FTSE 100™ Index in a way that affects its level, and FTSE has no obligation to consider your interests.

FTSE International Limited ("FTSE") is responsible for calculating and maintaining the FTSE 100™ Index. FTSE can add, delete or substitute the stocks underlying the FTSE 100™ Index or make other methodological changes that could change the level of the FTSE 100™ Index. You should realize that the changing of companies included in the FTSE 100™ Index may affect the FTSE 100™ Index as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, FTSE may alter, discontinue or suspend calculation or dissemination of the FTSE 100™ Index. Any of these actions could adversely affect the value of the notes. FTSE has no obligation to consider your interests in calculating or revising the FTSE 100™ Index. See "The Reference Indices—FTSE 100™ Index."

AMEX may adjust the AMEX Hong Kong 30 Index in a way that affects its level, and AMEX has no obligation to consider your interests.

The American Stock Exchange LLC ("AMEX"), the publisher of the AMEX Hong Kong 30 Index, is responsible for calculating and maintaining the AMEX Hong Kong 30 Index. AMEX can add, delete or substitute the stocks underlying the AMEX Hong Kong 30 Index or make other methodological changes that could change the level of the AMEX Hong Kong 30 Index. You should realize that the changing of companies included in the AMEX Hong Kong 30 Index may affect the AMEX Hong Kong 30 Index as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, AMEX may alter, discontinue or suspect calculation or dissemination of the AMEX Hong Kong 30 Index. Any of these actions could adversely affect the value of the notes. AMEX has no obligation to consider your interests in calculating or revising the AMEX Hong Kong 30 Index. See "The Reference Indices—The AMEX Hong Kong 30 Index."

The Tokyo Stock Exchange, Inc. may adjust the TOPIX® Index in a way that affects its level, and the Tokyo Stock Exchange has no obligation to consider your interests.

The Tokyo Stock Exchange, Inc. (the "TSE") is responsible for calculating and maintaining the TOPIX® Index. The TSE can add, delete or substitute the stocks underlying the TOPIX® Index or make other methodological changes that could change the level of the TOPIX® Index. You should realize that the changing of companies included in the TOPIX® Index may affect the TOPIX® Index, as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, the TSE may alter, discontinue or suspend calculation or dissemination of the TOPIX® Index. Any of these actions could adversely affect the value of the notes. The TSE has no

IS-4

obligation to consider your interests in calculating or revising the TOPIX® Index. See "The Reference Indices—The TOPIX® Index."

FTSE/Xinhua Index Limited may adjust the FTSE/Xinhua China 25 Index in a way that affects its level, and FTSE/Xinhua Index Limited has no obligation to consider your interests.

FTSE/Xinhua Index Limited ("FXI"), the publisher of the FTSE/Xinhua China 25 Index, is responsible for calculating and maintaining the FTSE/Xinhua China 25 Index. FXI can add, delete or substitute the stocks underlying the FTSE/Xinhua China 25 Index or make other methodological changes that could change the level of the FTSE/Xinhua China 25 Index. You should realize that the changing of companies included in the FTSE/Xinhua China 25 Index may affect the FTSE/Xinhua China 25 Index, as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, FXI may alter, discontinue or suspend calculation or dissemination of the FTSE/Xinhua China 25 Index. Any of these actions could adversely affect the value of the notes. FXI has no obligation to consider your interests in calculating or revising the FTSE/Xinhua China 25 Index. See "The Reference Indices—The FTSE/Xinhua China 25 Index."

Korea Exchange may adjust the KOSPI 200 in a way that affects its level, and Korea Exchange has no obligation to consider your interests.

Korea Exchange ("KRX"), the publisher of the Korea Stock Price Index 200 ("KOSPI 200"), is responsible for calculating and maintaining the KOSPI 200. KRX can add, delete or substitute the stocks underlying the KOSPI 200 or make other methodological changes that could change the level of the KOSPI 200. You should realize that the changing of companies included in the KOSPI 200 may affect the KOSPI 200, as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, KRX may alter, discontinue or suspend calculation or dissemination of the KOSPI 200. Any of these actions could adversely affect the value of the notes. KRX has no obligation to consider your interests in calculating or revising the KOSPI 200. See "The Reference Indices—The Korea Stock Price Index 200."

MSCI may adjust the MSCI Singapore Index in a way that affects its level, and MSCI has no obligation to consider your interests.

Morgan Stanley Capital International Inc. ("MSCI"), is responsible for calculating and maintaining the MSCI Singapore Index. MSCI can add, delete or substitute the stocks underlying the MSCI Singapore Index or make other methodological changes that could change the level of the MSCI Singapore Index. You should realize that the changing of companies included in the MSCI Singapore Index may affect the MSCI Singapore Index, as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, MSCI may alter, discontinue or suspend calculation or dissemination of the MSCI Singapore Index. Any of these actions could adversely affect the value of the notes. MSCI has no obligation to consider your interests in calculating or revising the MSCI Singapore Index. See "The Reference Indices—MSCI Singapore Index."

MSCI may adjust the MSCI Taiwan Index in a way that affects its level, and MSCI has no obligation to consider your interests.

MSCI is responsible for calculating and maintaining the MSCI Taiwan Index. MSCI can add, delete or substitute the stocks underlying the MSCI Taiwan Index or make other methodological changes that could change the level of the MSCI Taiwan Index. You should realize that the changing of companies included in the MSCI Taiwan Index may affect the MSCI Taiwan Index, as a newly added company may perform significantly better or worse than the company or companies it replaces. Additionally, MSCI may alter, discontinue or suspend calculation or dissemination of the MSCI Taiwan Index. Any of these actions could adversely affect the value of the notes. MSCI has no obligation to

IS-5

consider your interests in calculating or revising the MSCI Taiwan Index. See "The Reference Indices—MSCI Taiwan Index."

We are currently one of the companies that make up the Dow Jones EURO STOXX 50® Index, but, to our knowledge, we are not currently affiliated with any other company included in the Reference Indices.

We are currently one of the companies that make up the Dow Jones EURO STOXX 50® Index, but, to our knowledge, we are not currently affiliated with any of the other companies whose stock is represented in any of the reference indices. As a result, we will have no ability to control the actions of such other companies, including actions that could affect the value of the stocks underlying the reference indices or your notes. None of the money you pay us will go to AMEX, S&P, STOXX Limited, FTSE, MSCI, the TSE, TOPIX or any of the companies whose stock is included in a reference index, and none of these companies will be involved in the offering of the notes in any way. Neither they nor we will have any obligation to consider your interests as a holder of the notes in taking any corporate actions that might affect the value of your notes.

An investment in the notes is subject to risks associated with non-U.S. securities markets.

The stocks that compose the AMEX Hong Kong 30 Index, the Dow Jones EURO STOXX 50® Index, the FTSE 100™ Index, the FTSE/Xinhua China 25 Index, the KOSPI 200, the MSCI Singapore Index, the MSCI Taiwan Index, and the TOPIX® Index have been issued by non-U.S. companies. Investments in securities linked to the value of such non-U.S. equity securities involve risks associated with the securities markets in those countries, including risks of volatility in those markets, governmental intervention in those markets and cross shareholdings in companies in certain countries. Also, there is generally less publicly available information about companies in some of these jurisdictions than about U.S. companies that are subject to the reporting requirements of the Securities and Exchange Commission (the "SEC"), and generally non-U.S. companies are subject to accounting, auditing and financial reporting standards and requirements and securities trading rules different from those applicable to U.S. reporting companies.

The prices of securities in non-U.S. jurisdictions may be affected by political, economic, financial and social factors in such markets, including changes in a country's government, economic and fiscal policies, currency exchange laws and other foreign laws or restrictions. Moreover, the economies in such countries may differ favorably or unfavorably from the economy of the United States in such respects as growth of gross national product, rate of inflation, capital reinvestment, resources and self sufficiency. Such countries may be subjected to different and, in some cases, more adverse economic environments.

The economies of emerging market countries in particular face several concerns, including the relatively unstable governments which may present the risks of nationalization of businesses, restrictions on foreign ownership and prohibitions on the repatriation of assets, and which may have less protection of property rights than more developed countries. These economies may also be based on only a few industries, be highly vulnerable to changes in local and global trade conditions and may suffer from extreme and volatile debt burdens or inflation rates. In addition, local securities markets may trade a small number of securities and may be unable to respond effectively to increases in trading volume, potentially making prompt liquidation of holdings difficult or impossible at times. The risks of the economies of emerging market countries are relevant for notes linked to a reference index composed of securities traded in one or more emerging market countries or a basket of such reference indices.

IS-6

THE REFERENCE INDICES

THE AMEX HONG KONG 30 INDEX

General

All information regarding the AMEX Hong Kong 30 Index ("AMEX Hong Kong 30 Index") set forth in this index supplement, including, without limitation, its make-up, method of calculation, and changes in its components, have been derived from publicly available information. Such information reflects the policies of, and is subject to change by, the American Stock Exchange LLC ("AMEX" or the "American Stock Exchange"). The AMEX Hong Kong 30 Index is calculated, maintained and published by the American Stock Exchange. We make no representation or warranty as to the accuracy or completeness of such information.

The AMEX Hong Kong 30 Index is reported by Bloomberg Financial Markets under the ticker symbol "HKX."

The underlying components

The AMEX Hong Kong 30 Index is a capitalization weighted stock index that measures the market value performance (share price times the number of shares outstanding) of selected stocks listed on The Stock Exchange of Hong Kong Ltd. (the "HKSE"). The AMEX Hong Kong 30 Index currently is based on the capitalization of 30 stocks actively traded on the HKSE and is designed to represent a substantial segment of the Hong Kong stock market. The primary trading market for all of these stocks is either Hong Kong or London. The stocks comprising the AMEX Hong Kong 30 Index are grouped primarily among the following sectors: finance, property development, utilities and conglomerates, hotel/leisure, property investment, airlines and transportation.

The AMEX Hong Kong 30 Index will contain at least 30 stocks at all times. In addition, the stocks must meet certain listing and maintenance standards as discussed below. The American Stock Exchange may change the composition of the AMEX Hong Kong 30 Index at any time in order to more accurately reflect the composition and track the movement of the Hong Kong stock market. Any replacement stock must also meet the stock listing and maintenance standards as discussed below. Further, the American Stock Exchange may replace stocks in the event of certain corporate events, such as takeovers or mergers, that change the nature of the security. The American Stock Exchange selects stocks composing the AMEX Hong Kong 30 Index on the basis of their market weight, trading liquidity and representation of the business industries reflected on the HKSE. The American Stock Exchange requires that each stock be issued by an entity with major business interests in Hong Kong, be listed for trading on the HKSE and have its primary trading market located in a country with which the American Stock Exchange has an effective surveillance sharing agreement. The American Stock Exchange will remove any stock failing to meet the above listing and maintenance criteria within 30 days after such failure occurs. Additional qualification criteria for the inclusion and maintenance of stocks include the following standards: all stocks selected for inclusion in the AMEX Hong Kong 30 Index must have, and thereafter maintain, (1) an average daily capitalization, as calculated by the total number of shares outstanding times the latest price per share (in Hong Kong dollars), measured over the prior 6-month period, of at least H.K.$3,000,000,000; (2) an average daily closing price, measured over the prior 6-month period, not lower than H.K.$2.50; (3) an average daily trading volume, measured over the prior 6-month period, of more than 1,000,000 shares per day, although up to, but no more than, three stocks may have an average daily trading volume, measured over the prior 6- month period, of less than 1,000,000 shares per day, but in no event less than 500,000 shares per day; and (4) a minimum "free float" value (total freely tradable outstanding shares minus insider holdings), based on a monthly average measured over the prior 3-month period, of $238,000,000, although up to, but no more than, three stocks may have a free float value of less than $238,000,000 but in no event less than $150,000,000, measured over the same period.

IS-7

The American Stock Exchange reviews and applies the above qualification criteria relating to the stocks comprising the AMEX Hong Kong 30 Index on a quarterly basis, conducted on the last business day in January, April, July and October. Any stock failing to meet the above listing and maintenance criteria will be reviewed on the second Friday of the second month following the quarterly review to again determine compliance with the above criteria. Any stock failing this second review will be replaced by a "qualified" stock effective upon the close of business on the following Friday, provided, however, that if such Friday is not a business day in The City of New York, the replacement will be effective at the close of business on the first preceding business day in The City of New York. The American Stock Exchange will notify its membership immediately after it determines to replace a stock.

Computation of the AMEX Hong Kong 30 Index

The AMEX Hong Kong 30 Index is a capitalization-weighted index. A company's market capitalization is calculated by multiplying the number of shares outstanding by the company's current share price (in Hong Kong dollars). For valuation purposes, one AMEX Hong Kong 30 Index unit (1.0) is assigned a fixed value of one U.S. dollar. The AMEX Hong Kong 30 Index measures the average changes in price of the stocks comprising the AMEX Hong Kong 30 Index, weighted according to the respective market capitalizations, so that the effect of a percentage price change in a stock will be greater the larger the stock's market capitalization. The AMEX Hong Kong 30 Index was established by the American Stock Exchange on June 25, 1993, on which date the AMEX Hong Kong 30 Index value was set at 350.00.

The AMEX Hong Kong 30 Index is calculated by (i) aggregating the market capitalization of each stock comprising the AMEX Hong Kong 30 Index and (ii) dividing such sum by an adjusted base market capitalization or divisor. On June 25, 1993, the market value of the underlying stocks was approximately H.K.$1,152,829,149,500 and the divisor used to calculate the AMEX Hong Kong 30 Index was 3,293,797,570. The American Stock Exchange selected that particular divisor number in order, among other things, to ensure that the AMEX Hong Kong 30 Index was set at a general price level consistent with other well recognized stock market indices. The divisor is subject to periodic adjustments as set forth below. The AMEX Hong Kong 30 Index is calculated once each day by the American Stock Exchange based on the most recent official closing prices of each of the stocks comprising the AMEX Hong Kong 30 Index reported by the HKSE. Pricing of the AMEX Hong Kong 30 Index is disseminated before the opening of trading via the Consolidated Tape Authority Network-B and continuously during each business day in The City of New York. The dissemination value, however, will remain the same throughout the trading day because the trading hours of the HKSE do not overlap with trading hours in The City of New York. Accordingly, updated price information will be unavailable.

In order to maintain continuity in the level of the AMEX Hong Kong 30 Index in the event of certain changes due to non-market factors affecting the stocks comprising the AMEX Hong Kong 30 Index, such as the addition or deletion of stocks, substitution of stocks, stock dividends, stock splits, distributions of assets to stockholders or other capitalization events, the divisor used in calculating the AMEX Hong Kong 30 Index is adjusted in a manner designed to prevent any instantaneous change or discontinuity in the level of the AMEX Hong Kong 30 Index and in order that the value of the AMEX Hong Kong 30 Index immediately after such change will equal the level of the AMEX Hong Kong 30 Index immediately prior to the change. Thereafter, the divisor remains at the new value until a further adjustment is necessary as the result of another change. Nevertheless, changes in the identities and characteristics of the stocks comprising the AMEX Hong Kong 30 Index may significantly affect the behavior of the AMEX Hong Kong 30 Index over time.

IS-8

The HKSE.

Trading on the HKSE is fully electronic through an Automatic Order Matching and Execution System. The system is an electronic order book in which orders are matched and executed instantaneously if there are matching orders in the book, and on the basis of time/price priority. On-line real-time order entry and execution have eliminated the previous limitations of telephone-based trading. Trading takes place through trading terminals on the trading floor. There are no market-makers on the HKSE, but exchange dealers may act as dual capacity broker-dealers. Trading is undertaken from 10:00 a.m. to 12:30 p.m. and then from 2:30 p.m. to 3:55 p.m. (Hong Kong time) every Hong Kong day except Saturdays, Sundays and other days on which the HKSE is closed. Hong Kong time is 12 hours ahead of Eastern Daylight Savings Time and 13 hours ahead of Eastern Standard Time. Settlement of trade is required within 48 hours and is conducted by electronic book-entry delivery through the Central Clearing and Settlement System.

Due to the time differences between New York City and Hong Kong, on any normal trading day, trading on the HKSE, as of the date of this index supplement, will cease at 12:30 a.m. or 3:55 a.m., Eastern Daylight Savings Time. Using the last reported closing prices of the stocks underlying the AMEX Hong Kong 30 Index on the HKSE, the closing level of the AMEX Hong Kong 30 Index on any such trading day generally will be calculated, published and disseminated by the American Stock Exchange in the United States shortly before the opening of trading on the American Stock Exchange in New York on the same calendar day.

The HKSE has adopted certain measures intended to prevent any extreme short-term price fluctuations resulting from order imbalances or market volatility. Where the HKSE considers it necessary for the protection of the investor or the maintenance of an orderly market, it may at any time suspend dealings in any securities or cancel the listing of any securities in such circumstances and subject to such conditions as it thinks fit, whether requested by the listed issuer or not. The HKSE may also do so where: (1) an issuer fails, in a manner which the HKSE considers material, to comply with the HKSE Listing Rules or its Listing Agreements; (2) the HKSE considers there are insufficient securities in the hands of the public; (3) the HKSE considers that the listed issuer does not have a sufficient level of operations or sufficient assets to warrant the continued listing of the issuer's securities; or (4) the HKSE considers that the issuer or its business is no longer suitable for listing. Investors should also be aware that the HKSE may suspend the trading of individual stocks in certain limited and extraordinary circumstances, until certain price-sensitive information has been disclosed to the public. Trading will not be resumed until a formal announcement has been made. Trading of a company's shares may also be suspended if there is unusual trading activity in such shares.

An issuer may apply for suspension of its own accord. A suspension request will normally only be acceded to in the following circumstances: (1) where, for a reason acceptable to the HKSE, pricesensitive information cannot at that time be disclosed; (2) where the issuer is subject to an offer, but only where terms have been agreed in principle and require discussion with, and agreement by, one or more major shareholders (suspensions will only normally be appropriate where no previous announcement has been made); (3) to maintain an orderly market; (4) where there is an occurrence of certain levels of notifiable transactions, such as substantial changes in the nature, control or structure of the issuer, where publication of full details is necessary to permit a realistic valuation to be made of the securities concerned, or the approval of shareholders is required; (5) where the issuer is no longer suitable for listing, or becomes a "cash" company; or (6) for issuers going into receivership or liquidation. As a result of the foregoing, variations in the AMEX Hong Kong 30 Index may be limited by suspension of trading of individual stocks which comprise the AMEX Hong Kong 30 Index which may, in turn, adversely affect the value of the notes.

IS-9

License Agreement with the American Stock Exchange

We have entered into an agreement with The American Stock Exchange providing us and certain of our affiliates or subsidiaries identified in that agreement with a non-exclusive license and, for a fee, with the right to use the AMEX Hong Kong 30 Index, which is owned and published by AMEX, in connection with certain securities, including the notes.

The notes are not sponsored, endorsed, sold or promoted by the AMEX (including its affiliates). The American Stock Exchange has not passed on the legality or suitability of, or the accuracy or adequacy of descriptions and disclosures relating to the notes. The American Stock Exchange makes no representation or warranty, express or implied to the owners of the notes or any member of the public regarding the advisability of investing in securities generally or in the notes particularly, or the ability of the AMEX Hong Kong 30 Index to track general stock market performance. The American Stock Exchange has no relationship to Credit Suisse other than the licensing of the AMEX Hong Kong 30 Index and the related trademarks for use in connection with the notes, which index is determined, composed and calculated by the American Stock Exchange without regard to Credit Suisse or the notes. The American Stock Exchange has no obligation to take the needs of Credit Suisse or the owners of the notes into consideration in determining, composing or calculating the AMEX Hong Kong 30 Index. The American Stock Exchange is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the notes to be issued or in the determination or calculation of the equation by which the notes are to be converted into cash. The American Stock Exchange has no liability in connection with the administration, marketing or trading of the notes.

The American Stock Exchange is under no obligation to continue the calculation and dissemination of the AMEX Hong Kong 30 Index and the method by which the AMEX Hong Kong 30 Index is calculated and the name "AMEX Hong Kong 30 Index" may be changed at the discretion of the American Stock Exchange. No inference should be drawn from the information contained in this index supplement that the American Stock Exchange makes any representation or warranty, implied or express, to you or any member of the public regarding the advisability of investing in securities generally or in the notes in particular or the ability of the AMEX Hong Kong 30 Index to track general stock market performance. The American Stock Exchange has no obligation to take into account your interest, or that of anyone else having an interest in determining, composing or calculating the AMEX Hong Kong 30 Index. The American Stock Exchange is not responsible for, and has not participated in the determination of the timing of, prices for or quantities of, the notes or in the determination or calculation of the equation by which the notes are to be settled in cash. The American Stock Exchange has no obligation or liability in connection with the administration, marketing or trading of the notes. The use of and reference to the AMEX Hong Kong 30 Index in connection with the notes have been consented to by the American Stock Exchange.

The American Stock Exchange disclaims all responsibility for any inaccuracies in the data on which the AMEX Hong Kong 30 Index is based, or any mistakes or errors or omissions in the calculation or dissemination of the AMEX Hong Kong 30 Index.

IS-10

THE DOW JONES EURO STOXX 50® INDEX

General

We have derived all information regarding the Dow Jones EURO STOXX 50® Index contained in this index supplement, including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information. Such information reflects the policies of, and is subject to change by, STOXX Limited. The Dow Jones EURO STOXX 50® Index is calculated, maintained and published by STOXX Limited. We make no representation or warranty as to the accuracy or completeness of such information.

The Dow Jones EURO STOXX 50® Index was created by STOXX Limited, a joint venture between Deutsche Börse AG, Dow Jones & Company and SWX Swiss Exchange. Publication of the Dow Jones EURO STOXX 50® Index began on February 26, 1998, based on an initial Dow Jones EURO STOXX 50® Index value of 1,000 at December 31, 1991. The Dow Jones EURO STOXX 50® Index is published in The Wall Street Journal and disseminated on the STOXX Limited website: http://www.stoxx.com, which sets forth, among other things, the country and industrial sector weightings of the securities included in the Dow Jones EURO STOXX 50® Index and updates these weightings at the end of each quarter. Information contained in the STOXX Limited website is not incorporated by reference in, and should not be considered a part of, this index supplement or any pricing supplement.

The Dow Jones EURO STOXX 50® Index is reported by Bloomberg Financial Markets under the ticker symbol "SX5T:IND."

The underlying components

The Dow Jones EURO STOXX 50® Index is composed of 50 component stocks of market sector leaders from within the Dow Jones EURO STOXX® Index, which includes stocks selected from the Eurozone. The component stocks have a high degree of liquidity and represent the largest companies across all market sectors defined by the Industry Classification Benchmark.

The composition of the Dow Jones EURO STOXX 50® Index is reviewed annually, based on the closing stock data on the last trading day in August. The component stocks are announced the first trading day in September. Changes to the component stocks are implemented on the third Friday in September and are effective the following trading day. Changes in the composition of the Dow Jones EURO STOXX 50® Index are made to ensure that the Dow Jones EURO STOXX 50® Index includes the 50 market sector leaders from within the Dow Jones EURO STOXX® Index. A current list of the issuers that comprise the Dow Jones EURO STOXX 50® Index is available on the STOXX Limited website: http://www.stoxx.com. Information contained in the STOXX Limited website is not incorporated by reference in, and should not be considered a part of, this index supplement or any pricing supplement.

The free float factors for each component stock used to calculate the Dow Jones EURO STOXX 50® Index, as described below, are reviewed, calculated and implemented on a quarterly basis and are fixed until the next quarterly review.

The Dow Jones EURO STOXX 50® Index is also reviewed on an ongoing basis. Corporate actions (including initial public offerings, mergers and takeovers, spin-offs, delistings and bankruptcy) that affect the Dow Jones EURO STOXX 50® Index composition are immediately reviewed. Any changes are announced, implemented and effective in line with the type of corporate action and the magnitude of the effect.

IS-11

Computation of the Dow Jones EURO STOXX 50® Index

The Dow Jones EURO STOXX 50® Index is calculated with the "Laspeyres formula," which measures the aggregate price changes in the component stocks against a fixed base quantity weight. The formula for calculating the Dow Jones EURO STOXX 50® Index value can be expressed as follows:

Index =

free float market capitalization of the Dow Jones EURO STOXX 50® Index

adjusted base date market capitalization
of the Dow Jones EURO STOXX 50® Index

1,000

The "free float market capitalization of the Dow Jones EURO STOXX 50® Index" is equal to the sum of the products of the closing price, market capitalization and free float factor for each component stock as of the time the Dow Jones EURO STOXX 50® Index is being calculated.

The Dow Jones EURO STOXX 50® Index is also subject to a divisor, which is adjusted to maintain the continuity of Dow Jones EURO STOXX 50® Index values despite changes due to corporate actions. The following is a summary of the adjustments to any component stock made for corporate actions and the effect of such adjustment on the divisor, where shareholders of the component stock will receive "B" number of shares for every "A" share held (where applicable).

(1) Split and reverse split:
Adjusted price = closing price * A/B
New number of shares = old number of shares * B/A
Divisor: no change

(2) Rights offering:
Adjusted price = (closing price * A + subscription price * B)/(A + B)
New number of shares = old number of shares * (A + B)/A
Divisor: increases

(3) Stock dividend:
Adjusted price = closing price * A/(A + B)
New number of shares = old number of shares * (A + B)/A
Divisor: no change

(4) Stock dividend of another company:
Adjusted price = (closing price * A - price of other company * B)/A
Divisor: decreases

(5) Return of capital and share consideration:
Adjusted price = (closing price - dividend announced by company * (1 – withholding tax)) * A/B
New number of shares = old number of shares * B/A
Divisor: decreases

(6) Repurchase shares/self tender:
Adjusted price = ((price before tender * old number of shares) - (tender price * number of tendered shares))/(old number of
shares - number of tendered shares)
New number of shares = old number of shares - number of tendered shares
Divisor: decreases

(7) Spin-off:
Adjusted price = (closing price * A - price of spun-off shares *B)/A
Divisor: decreases

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(8) Combination stock distribution (dividend or split) and rights offering:

For this corporate action, the following additional assumptions apply:

•: Shareholders receive B new shares from the distribution and C new shares from the rights offering for every A share held.
•: If A is not equal to one share, all the following "new number of shares" formulae need to be divided by A:

If rights are applicable after stock distribution (one action applicable to other):
Adjusted price = (closing price * A + subscription price * C * (1 + B/A)/((A + B) * (1 + C/A))
New number of shares = old number of shares * ((A + B) * (1 + C/A))/A
Divisor: increases

If stock distribution is applicable after rights (one action applicable to other):
Adjusted price = (closing price * A + subscription price * C)/((A + C) * (1 + B/A))
New number of shares = old number of shares * ((A + C) * (1 + B/A))
Divisor: increases

Stock distribution and rights (neither action is applicable to the other):
Adjusted price = (closing price * A + subscription price * C)/(A + B + C)
New number of shares = old number of shares * (A + B + C)/A
Divisor: increases

License Agreement with STOXX Limited

We have entered into an agreement with STOXX Limited providing us and certain of our affiliates or subsidiaries identified in that agreement with a non-exclusive license and, for a fee, with the right to use the Dow Jones EURO STOXX 50® Index, which is owned and published by STOXX Limited, in connection with certain securities, including the notes.

The notes are not sponsored, endorsed, sold or promoted by STOXX Limited (including its affiliates) (collectively referred to as "STOXX Limited"). STOXX Limited has not passed on the legality or suitability of, or the accuracy or adequacy of descriptions and disclosures relating to the notes. STOXX Limited makes no representation or warranty, express or implied to the owners of the notes or any member of the public regarding the advisability of investing in securities generally or in the notes particularly, or the ability of the Dow Jones EURO STOXX 50® Index to track general stock market performance. STOXX Limited has no relationship to Credit Suisse other than the licensing of the Dow Jones EURO STOXX 50® Index and the related trademarks for use in connection with the notes, which index is determined, composed and calculated by STOXX Limited without regard to Credit Suisse or the notes. STOXX Limited has no obligation to take the needs of Credit Suisse or the owners of the notes into consideration in determining, composing or calculating the Dow Jones EURO STOXX 50® Index. STOXX Limited is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the notes to be issued or in the determination or calculation of the equation by which the notes are to be converted into cash. STOXX Limited has no liability in connection with the administration, marketing or trading of the notes.

STOXX LIMITED DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE DOW JONES EURO STOXX 50® INDEX OR ANY DATA INCLUDED THEREIN AND STOXX LIMITED SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS OR INTERRUPTIONS THEREIN. STOXX LIMITED MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY CREDIT SUISSE, HOLDERS OF THE NOTES, OR ANY OTHER PERSON OR ENTITY IN CONNECTION WITH THE USE OF THE DOW JONES EURO STOXX 50® INDEX OR ANY DATA INCLUDED THEREIN. STOXX LIMITED MAKES NO EXPRESS OR IMPLIED

IS-13

WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE DOW JONES EURO STOXX 50® INDEX OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL STOXX LIMITED HAVE ANY LIABILITY FOR ANY LOST PROFITS OR SPECIAL, INCIDENTAL, PUNITIVE, INDIRECT OR CONSEQUENTIAL DAMAGES, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF. THE LICENSING AGREEMENT BETWEEN CREDIT SUISSE AND STOXX LIMITED IS SOLELY FOR THEIR BENEFIT AND NOT FOR THE BENEFIT OF THE OWNERS OF THE NOTES OR ANY THIRD PARTIES.

THE DOW JONES EURO STOXX 50® INDEX AND STOXX® ARE THE INTELLECTUAL PROPERTY (INCLUDING REGISTERED TRADEMARKS) OF STOXX LIMITED, ZURICH, SWITZERLAND AND/OR DOW JONES & COMPANY, INC., A DELAWARE CORPORATION, NEW YORK, USA (THE "LICENSORS"), AND HAVE BEEN LICENSED FOR CERTAIN PURPOSES BY CREDIT SUISSE. THE NOTES ARE NOT SPONSORED, ENDORSED, SOLD OR PROMOTED BY THE LICENSORS, AND THE LICENSORS MAKE NO REPRESENTATION REGARDING THE ADVISABILITY OF INVESTING IN THE NOTES.

IS-14

THE FTSE 100™ INDEX

General

All information regarding the FTSE 100™ Index set forth in this index supplement, including, without limitation, its make-up, method of calculation, and changes in its components, has been derived from publicly available information.

The underlying components

The FTSE 100™ Index is an index calculated, published and disseminated by FTSE International Limited ("FTSE"), a company owned equally by the London Stock Exchange (the "LSE") and the Financial Times, in association with the Institute and the Faculty of Actuaries. The FTSE 100™ Index measures the composite price performance of stocks of the largest 100 companies (determined on the basis of market capitalization) traded on the LSE. Publication of the FTSE 100™ Index began in February 1984.

The 100 stocks included in the FTSE 100™ Index (the "FTSE Underlying Stocks") were selected from a reference group of stocks trading on the LSE which were selected by excluding certain stocks that have low liquidity based on public float, accuracy and reliability of prices, size and number of trading days. The FTSE Underlying Stocks were selected from this reference group by selecting 100 stocks with the largest market value. A list of the issuers of the FTSE Underlying Stocks is available from FTSE.

The FTSE 100™ Index is reported by Bloomberg Financial Markets under the ticker symbol "UKX."

Computation of the FTSE 100™ Index

The FTSE 100™ Index is calculated by (i) multiplying the per share price of each stock included in the FTSE 100™ Index by the number of outstanding shares, (ii) calculating the sum of all these products (such sum being hereinafter the "FTSE Aggregate Market Value") as of the starting date of the FTSE 100™ Index, (iii) dividing the FTSE Aggregate Market Value by a divisor which represents the FTSE Aggregate Market Value on the base date of the FTSE 100™ Index and which can be adjusted to allow changes in the issued share capital of individual underlying stocks including the deletion and addition of stocks, the substitution of stocks, stock dividends and stock splits to be made without distorting the FTSE 100™ Index and (iv) multiplying the result by 1,000. Because of such capitalization weighting, movements in share prices of companies with relatively larger market capitalization will have a greater effect on the level of the entire FTSE 100™ than will movements in share prices of companies with relatively smaller market capitalization.

The FTSE 100™ Index is reviewed quarterly by an Index Steering Committee of the LSE in order to maintain continuity in the level. The FTSE Underlying Stocks may be replaced, if necessary, in accordance with deletion/addition rules which provide generally for the removal and replacement of a stock from the FTSE 100™ Index if such stock is delisted or its issuer is subject to a takeover offer that has been declared unconditional or it has ceased, in the opinion of the Index Steering Committee, to be a viable component of the FTSE 100™ Index. To maintain continuity, a stock will be added at the quarterly review if it has risen to 90th place or above and a stock will be deleted if at the quarterly review it has fallen to 111th place or below, in each case ranked on the basis of market capitalization.

IS-15

License Agreement with FTSE

The use of and reference to the FTSE 100™ Index in connection with the notes has been consented to by the FTSE. All rights to the FTSE 100™ Index are owned by the FTSE, the publisher of the FTSE 100™ Index. Credit Suisse, the agent, the calculation agent and the trustee disclaim all responsibility for the calculation or other maintenance of or any adjustments to the FTSE 100™ Index. In addition, none of the LSE, the Financial Times and FTSE has any relationship to Credit Suisse or the notes. None of the LSE, the Financial Times and the FTSE sponsors, endorses, authorizes, sells or promotes the notes, or has any obligation or liability in connection with the administration, marketing or trading of the notes or with the calculation of the Ending Basket Level on the Underlying (Basket) Valuation Date.

The notes are not in any way sponsored, endorsed, sold or promoted by FTSE or by the LSE or by The Financial Times Limited ("FT") and neither FTSE, the LSE or FT makes any warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the FTSE 100™ Index and/or the figure at which the said Index stands at any particular time on any particular day or otherwise. The FTSE 100™ Index is compiled and calculated by FTSE. However, neither FTSE nor the LSE nor FT shall be liable (whether in negligence or otherwise) to any person for any error in the FTSE 100™ Index and neither FTSE nor the LSE nor FT shall be under any obligation to advise any person of any error therein.

"FTSE®," "FT-SE®" and "Footsie®" are trademarks of the London Stock Exchange Plc and The Financial Times Limited and are used by FTSE International Limited under license. "All-World," "All- Share" and "All-Small" are trademarks of FTSE International Limited."

IS-16

THE FTSE/XINHUA CHINA 25™ INDEX

General

We have obtained all information contained in this pricing supplement regarding the FTSE/Xinhua China 25 Index, including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information. Such information reflects the policies of, and is subject to change by, FTSE/Xinhua Index Limited. FTSE/Xinhua Index Limited has no obligation to continue to publish, and may discontinue publication of, the FTSE/Xinhua China 25 Index.

The underlying components

The FTSE/Xinhua China 25 Index is a stock index calculated, published and disseminated by FTSE/Xinhua Index Limited ("FXI"), a joint venture of FTSE International Limited ("FTSE") and Xinhua Financial Network Limited ("Xinhua"), and is designed to represent the performance of the mainland Chinese market that is available to international investors. The FTSE/Xinhua China 25 Index is quoted in Hong Kong dollars ("HKD") and currently is based on the 25 largest and most liquid Chinese stocks (called "H" shares and "Red Chip" shares), listed and trading on the Stock Exchange of Hong Kong Ltd. ("HKSE"). "H" shares are securities of companies incorporated in the People's Republic of China and nominated by the Chinese Government for listing and trading on the HKSE. "Red Chip" shares are securities of Hong Kong-incorporated companies, which are substantially owned directly or indirectly by the Chinese government and have the majority of their business interests in mainland China. Both "H" shares and "Red Chip" shares are quoted and traded in Hong Kong Dollars and are available only to international investors, who are not citizens of the People's Republic of China.

The FTSE/Xinhua China 25 Index is reported by Bloomberg Financial Markets under the ticker symbol "XIN0I."

Computation of the FTSE/Xinhua China Index

The FTSE/Xinhua China 25 Index is calculated using the free float index calculation methodology of the FTSE Group. The index is calculated using the following algorithm:

where p is the latest trade price of the component security n, e is the exchange rate required to convert the security's home currency into the index's base currency, s is the number of shares of the security in issue, f is the portion of free floating shares, adjusted in accordance with the policies of the FTSE/Xinhua Index Limited, c is the capping factor published by the FTSE/Xinhua Index Limited at the most recent quarterly review of the index, and d is the divisor, a figure that represents the total issued share capital of the index at the base date, which may be adjusted to allow for changes in the issued share capital of individual securities without distorting the index.

The FTSE/Xinhua China 25 Index uses actual trade prices for securities with local stock exchange quotations and Reuters real-time spot currency rates for its calculations. Under this methodology, FTSE/Xinhua Index Limited excludes from free floating shares trade investments in a FTSE/Xinhua China 25 Index constituent company by another FTSE/Xinhua China 25 Index constituent company, significant long-term holdings by founders, directors and/or their families, employee share schemes (if restricted), government holdings, foreign ownership limits, and portfolio investments subject to lock-in clauses (for the duration of the clause). Free float restrictions are calculated using available published

IS-17

information. The initial weighting of a FTSE/Xinhua China 25 Index constituent stock is applied in bands, as follows:

Free float less than or equal to 15%		Ineligible for inclusion in the FTSE/Xinhua China 25 Index, unless free float is also greater than 5% and the full market capitalization is greater than US$2.5 billion (or local currency equivalent), in which case actual free float is used.
Free float greater than 15% but less than or equal to 20%		20%
Free float greater than 20% but less than or equal to 30%		30%
Free float greater than 30% but less than or equal to 40%		40%
Free float greater than 40% but less than or equal to 50%		50%
Free float greater than 50% but less than or equal to 75%		75%
Free float greater than 75%		100%

These bands are narrow at the lower end, to ensure that there is sufficient sensitivity in order to maintain accurate representation, and broader at the higher end, in order to ensure that the weightings of larger companies do not fluctuate absent a significant corporate event. Following the application of an initial free float restriction, a FTSE/Xinhua China 25 Index constituent stock's free float will only be changed if its actual free float is more than 5 percentage points above the minimum or 5 percentage points below the maximum of an adjacent band. This 5 percentage point threshold does not apply if the initial free float is less than 15%. Foreign ownership limits, if any, are applied after calculating the actual free float restriction, but before applying the bands shown above. If the foreign ownership limit is more restrictive than the free float restriction, the precise foreign ownership limit is applied. If the foreign ownership limit is less restrictive or equal to the free float restriction, the free float restriction is applied, subject to the bands shown above. The FTSE/Xinhua China 25 Index is periodically reviewed for changes in free float. These reviews coincide with the quarterly reviews undertaken of the FTSE/Xinhua China 25 Index. Implementation of any changes takes place after the close of the index calculation on the third Friday in January, April, July and October. A stock's free float is also reviewed and adjusted if necessary following certain corporate events. If the corporate event includes a corporate action which affects the FTSE/Xinhua China 25 Index, any change in free float is implemented at the same time as the corporate action. If there is no corporate action, the change in free float is applied as soon as practicable after the corporate event. Securities must be sufficiently liquid to be traded. The following criteria, among others, are used to ensure that illiquid securities are excluded:

•: Price. FXI must be satisfied that an accurate and reliable price exists for the purposes of determining the market value of a company. FXI may exclude a security from the FTSE/Xinhua China 25 Index if it considers that an "accurate and reliable" price is not available. The FTSE/Xinhua China 25 Index uses the last trade prices from the relevant stock exchanges, when available.
•: Liquidity. Securities in the FTSE/Xinhua China 25 Index will be reviewed annually for liquidity. Securities which do not turn over at least 2% of their shares in issue, after the application of any free float restrictions, per month for ten of the twelve months prior to the quarterly review by FXI will not be eligible for inclusion in the FTSE/Xinhua China 25 Index. An existing constituent failing to trade at least 2.0% of its shares in issue, after the application of any free float restrictions, per month for more than four of the twelve months prior to the quarterly review will be removed after close of the index calculation on the next trading day following the

IS-18

third Friday in January, April, July and October. Any period when a share is suspended will be excluded from the calculation.

•: New Issues. New issues must have a minimum trading record of at least 20 trading days prior to the date of the review and turnover of a minimum of 2% of their shares in issue, after the application of any free float restrictions, per month each month, except in certain circumstances.

The FTSE/Xinhua China 25 Index, like other indices of FXI, is governed by an independent advisory committee that ensures that the index is operated in accordance with its published ground rules, and that the rules remain relevant to the FTSE/Xinhua China 25 Index.

The Stock Exchange of Hong Kong Ltd.

Trading on the Stock Exchange of Hong Kong Ltd. ("HKSE") is fully electronic through an Automatic Order Matching and Execution System. The system is an electronic order book in which orders are matched and executed instantaneously if there are matching orders in the book, and on the basis of time/price priority. On-line real-time order entry and execution have eliminated the previous limitations of telephone-based trading. Trading takes place through trading terminals on the trading floor. There are no market-makers on the HKSE, but exchange dealers may act as dual capacity broker-dealers. Trading is undertaken from 10:00 a.m. to 12:30 p.m. and then from 2:30 p.m. to 3:55 p.m. (Hong Kong time) every Hong Kong day except Saturdays, Sundays and other days on which the HKSE is closed. Hong Kong time is 12 hours ahead of Eastern Daylight Savings Time and 13 hours ahead of Eastern Standard Time. Settlement of trade is required within 48 hours and is conducted by electronic book-entry delivery through the Central Clearing and Settlement System.

Due to the time differences between New York City and Hong Kong, on any normal trading day, trading on the HKSE, as of the date of this index supplement, currently will cease at 12:30 a.m. or 3:55 a.m., Eastern Daylight Savings Time. Using the last reported closing prices of the stocks underlying the FTSE/Xinhua China 25 Index on the HKSE, the closing level of the FTSE/Xinhua China 25 Index on any such trading day generally will be calculated, published and disseminated by the American Stock Exchange in the United States shortly before the opening of trading on the American Stock Exchange in New York on the same calendar day.

IS-19

certain levels of notifiable transactions, such as substantial changes in the nature, control or structure of the issuer, where publication of full details is necessary to permit a realistic valuation to be made of the securities concerned, or the approval of shareholders is required; (5) where the issuer is no longer suitable for listing, or becomes a "cash" company; or (6) for issuers going into receivership or liquidation. As a result of the foregoing, variations in the FTSE/Xinhua China 25 Index may be limited by suspension of trading of individual stocks which comprise the FTSE/Xinhua China 25 Index which may, in turn, adversely affect the value of the notes.

License Agreement with FTSE/Xinhua Index Limited

The notes are not in any way sponsored, endorsed, sold or promoted by FXI, FTSE or Xinhua or by the London Stock Exchange PLC (the "London Stock Exchange") or by The Financial Times Limited ("FT") and neither FXI, FTSE, Xinhua nor the London Stock Exchange nor FT makes any warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the FTSE/Xinhua China 25 Index and/or the figure at which the FTSE/Xinhua China 25 Index stands at any particular time on any particular day or otherwise. The FTSE/Xinhua China 25 Index is compiled and calculated by or on behalf of FXI. However, neither FXI or FTSE or Xinhua or the London Stock Exchange or FT shall be liable (whether in negligence or otherwise) to any person for any error in the FTSE/Xinhua China 25 Index and neither FXI, FTSE, Xinhua or the London Stock Exchange or FT shall be under any obligation to advise any person of any error therein.

The FTSE/Xinhua China 25 Index is calculated by or on behalf of FXI. FXI does not sponsor, endorse or promote the notes.

All copyright in the FTSE/Xinhua China 25 Index values and constituent list vest in FXI. Credit Suisse has obtained full license from FXI to use such copyright in the creation of the notes.

"FTSE™" is a trade mark jointly owned by the London Stock Exchange PLC and The Financial Times Limited. "FTSE/Xinhua" is a trade mark of FTSE International Limited. "Xinhua" are service marks and trade marks of Xinhua Financial Network Limited. All marks are licensed for use by FXI.

IS-20

THE KOREA STOCK PRICE INDEX 200

General

We have obtained all information contained in this index supplement regarding the Korea Stock Price Index 200 (the "KOSPI 200"), including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information. Such information reflects the policies of, and is subject to change by, Korea Exchange ("KRX"), the publisher of the KOSPI 200. KRX has no obligation to continue to publish, and may discontinue publication of, the KOSPI 200.

The KOSPI 200 is a capitalization-weighted index of 200 Korean blue-chip stocks which make up a large majority of the total market value of the Korea Stock Exchange ("KSE"). The KOSPI 200 is the underlying index for stock index futures and options trading. The constituent stocks are selected on a basis of the market value of the individual stocks, liquidity and their relative positions in their respective industry groups.

The KOSPI 200 is reported by Bloomberg Financial Markets under the ticker symbol "KOSPI2."

The underlying components

All common stocks listed on the KSE as of the periodic realignment date (as defined below) will be included in the selection process, except for the stocks which fall into one of the following categories:

•: stocks with administrative issues;
•: stocks with liquidation issues;
•: stocks issued by securities investment companies;
•: stocks that have been listed less than one year as of the last trading in April of the year in which the periodic review and selection process occurs;
•: stocks belonging to the industry groups other than those industry groups listed below;
•: a constituent stock merged into a non-constituent stock;
•: a company established as a result of a merger between two constituent stocks; and
•: any other stocks that are deemed unsuitable to be included in the constituents of the KOSPI 200.

The companies listed on the KOSPI 200 are classified into the following industry groups: (i) fisheries, (ii) mining, (iii) manufacturing, (iv) construction, (v) electricity and gas, (vi) services, (vii) post and communication and (viii) finance. The constituents of the KOSPI 200 are selected first from the non-manufacturing industry cluster, and then from the manufacturing industry cluster.

The constituents from the non-manufacturing industry cluster are selected in accordance with the following:

•: Selection is made in descending order of market capitalization, from large to small, in the same industry group, while ensuring the aggregate market capitalization of the concerned industry group is within 70% of that of all industry groups.
•: Notwithstanding the above, the stocks whose ranking of trading volume in descending order is below 85% of the stocks included in deliberation within the same industry group are excluded. In such case, the excluded stock is replaced by a stock that is next in ranking in market capitalization, but satisfies the trading volume criteria.

IS-21

The constituents from the manufacturing industry cluster are selected in descending order of market capitalization, while excluding stocks whose ranking of trading volume in descending order is below 85% of the stocks included in the process within the same industry group. The excluded stock is replaced by a stock that is next in ranking in market capitalization, but satisfies the trading volume criteria.

Notwithstanding anything above, a stock whose market capitalization is within the top 50 in terms of market capitalization may be included in the constituents of the KOSPI 200, by taking into consideration the influence that its industry group has on the KOSPI 200, as well as the liquidity of that stock. Stocks to be placed on the replacement list are selected from the stocks included for deliberation, excluding those already selected as constituents of the KOSPI 200.

Computation of the KOSPI 200 Index

The KOSPI 200 is computed by multiplying (i) the market capitalization as of the calculation time divided by the market capitalization as of the base date, by (ii) 100. The base date of the KOSPI 200 is January 3, 1990 with a base index of 100. Market capitalization is obtained by multiplying the number of listed common shares of the constituents by the price of the concerned common share.

If the number of listed shares increases due to rights offering, bonus offering and stock dividend, which accompany ex-right or ex-dividend, such increase is included in the number of listed shares on the ex-right date or ex-dividend date.

Share prices refer to the market price established during the regular trading session. If no trading took place on such day, the quotation price is used and if no quotation price is available, the closing price of the most recent trading day is used.

Stock Revision

The constituents of the KOSPI 200 are realigned once a year while observing each of the following:

•: An existing constituent will not be removed if the ranking of the market capitalization of such stock is within 100/110 of the ranking of the KOSPI 200 constituents of the same industry group;
•: In order to be included in the constituents of the KOSPI 200, the ranking of the market capitalization of a stock must be within 90/100 of the ranking of the KOSPI 200 constituents of the same industry group;
•: If the ranking of the market capitalization of an existing constituent falls below 100/110 of the ranking of the KOSPI 200 constituents of the same industry group, but there is no stock satisfying the requirement specified in the preceding clause, the existing constituent will not be removed; and
•: When removing the existing constituents, a constituent whose ranking of market capitalization within the same industry group is the lowest will be removed first.

The periodic realignment date is the trading day following the day that is the last trading day of June contracts of both the index futures and index options. In the event where a constituent of the KOSPI 200 falls under any of the following cases, that constituent shall be removed from the constituents and the removal date is as follows:

•: Delisting: the trading day following the delisting date;
•: Designation as administrative issue: the designation date;
•: Merger: the day of trading halt; and

IS-22

•: It is determined that the stock is unsuitable as a constituent of the KOSPI 200: the trading day following the day of such determination, which is the last trading day of the nearest month contracts of both the index futures and index options, after the date of such decision.

When realigning the constituents of the KOSPI 200, the replacement stocks are chosen from the replacement list in accordance with the rank order. In the case of an industry group that has no stock listed on the replacement list, a replacement stock is chosen from the replacement list of manufacturing industry cluster.

The Korea Stock Exchange

The KSE's predecessor, the Daehan Stock Exchange, was established in 1956. The KSE is an order-driven market, where buy and sell orders compete for best prices. The KSE seeks to maintain a fair and orderly market for trading and regulates and supervises its member firms.

Throughout the trading hours, orders are matched at a price satisfactory to both buy and sell sides, according to price and time priorities. The opening and closing prices, however, are determined by call auctions: at the market opening and closing, orders received for a certain period of time are pooled and matched at the price at which the most number of shares can be executed. The KSE uses electronic trading procedures, from order placement to trade confirmation. The KSE is open from 9:00 a.m. to 3:00 p.m., Korean time, during weekdays. Investors can submit their orders from 8:00 a.m., one hour before the market opening. Orders delivered to the market during the period from 8:00 a.m. to 9:00 a.m. are queued in the order book and matched by call auction method at 9:00 a.m. to determine opening prices. After opening prices are determined, the trades are conducted by continuous auctions until 2:50 p.m. (10 minutes before the market closing). Besides the regular session, the KSE conducts pre-hours and after-hours sessions for block trading and basket trading. During pre-hours sessions from 7:30 a.m. to 8:30 a.m., orders are matched at previous day's respective closing prices. After-hours sessions are open for 50 minutes from 3:10 p.m. to 4:00 p.m. During after-hours sessions, orders are matched at the closing prices of the day.

On January 26, 2004, the KSE introduced the random-end system at the opening and closing call auctions. The stated purpose of the random-end system is to prevent any distortion in the price discovery function of the KSE caused by "fake" orders placed with an intention of misleading other investors. In cases where the highest or lowest indicative price of a stock set during the last 5 minutes before the closing time of the opening (or closing) call session, 8:55 a.m. to 9:00 a.m. (or 2:55 p.m. to 3:00 p.m.), deviates from the provisional opening (or closing) price by 5% or more, the KSE delays the determination of the opening (or closing) price of the stock up to five minutes. The official opening (or closing) price of such stock is determined at a randomly chosen time within five minutes after the regular opening (or closing) time. The KSE makes public the indicative prices during the opening (or closing) call trading sessions. Pooling together all bids and offers placed during the order receiving hours for the opening (or closing) session, 8:10 a.m. to 9:00 a.m. (or 2:50 p.m. to 3:00 p.m.), the indicative opening (or closing) prices of all stocks are released to the public on a real-time basis.

The KSE sets a limit on the range that the price of individual stocks can change during a day. As of June 2004, that limit was set at 15%, which meant that the price of each stock could neither fall nor rise by more than 15% from the previous day's closing price. In addition, when the price and/or trading activities of a stock are expected to show an abnormal movement in response to an unidentified rumor or news, or when an abnormal movement is observed in the market, the KSE may halt the trading of the stock. In such cases, the KSE requests the company concerned to make a disclosure regarding the matter. Once the company makes an official announcement regarding the matter, trading can resume within an hour; however, if the KSE deems that the situation was not fully resolved by the disclosure, trading resumption may be delayed.

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The KSE introduced circuit breakers in December 1998. The trading in the equity markets is halted for 20 minutes when the KOSPI 200 falls by 10% or more from the previous day's closing and the situation lasts for one minute or longer. The trading resumes by call auction where the orders submitted during the 10 minutes after the trading halt ended are matched at a single price.

License Agreement with Korea Exchange

The notes are not sponsored, endorsed, sold or promoted by KRX, the successor of Korea Stock Exchange who calculates the KOSPI 200 and owns the intellectual property rights over it. KRX makes no representation or warranty, express or implied, to the owners of the notes or any member of the public regarding the advisability of investing in securities generally or in the notes particularly or the ability of the KOSPI 200 to track general stock market performance. KRX's only relationship to Credit Suisse is the licensing of certain trademarks and trade names of KRX and of the KOSPI 200 which is determined, composed and calculated by KRX without regard to Credit Suisse or the notes. KRX has no obligation to take the needs of Credit Suisse or the owners of the notes into consideration in determining, composing or calculating the KOSPI 200. KRX is not responsible for and has not participated in the determination of the prices and amount of the notes or the timing of the issuance or sale of the notes or in the determination or calculation of the equation by which the notes is to be converted into cash. KRX has no obligation or liability in connection with the administration, marketing or trading of the notes.

KRX DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE KOSPI 200 OR ANY DATA INCLUDED THEREIN AND KRX SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. KRX MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY CREDIT SUISSE, OWNERS OF THE NOTES, OR ANY OTHER PERSON OR ENTITY FROM TE USE OF THE KOSPI 200 OR ANY DATA INCLUDED THEREIN. KRX MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE KOSPI 200 OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL KRX HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

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THE MSCI SINGAPORE INDEX

General

We have derived all information contained in this index supplement regarding the MSCI Singapore Index, including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information. Such information reflects the policies of, and is subject to change by, the Morgan Stanley Capital International Inc. ("MSCI"). The MSCI Singapore Index is calculated, maintained and published by MSCI. We make no representation or warranty as to the accuracy or completeness of such information.

The MSCI Singapore Index is a free float adjusted market capitalization index that measures equity market performance in Singapore.

The MSCI Singapore Index is reported by Bloomberg Financial Markets under the ticker symbol "MXSG."

The underlying components

MSCI targets an 85% free float adjusted market representation level within each industry group in Singapore. The security selection process within each industry group is based on analysis of the following:

•

Each company's business activities and the diversification that its securities would bring to the index.

•

The size of the securities based on free float adjusted market capitalization. All other things being equal, MSCI targets for inclusion the most sizable securities in an industry group. In addition, securities that do not meet the minimum size guidelines are not considered for inclusion. Though the following limits are subject to revision, as of the date of this index supplement, a security will be eligible for inclusion in the MSCI Singapore Index if it achieves a free float adjusted market capitalization of $250 million and will be eligible for deletion if such capitalization falls below $125 million as of the yearly review. If, however, the free float adjusted market capitalization level falls significantly below the free float adjusted market capitalization level for deletions prior to a yearly review, for example during a quarterly review, then the security may be deleted prior to such yearly review.

•

The liquidity of the securities. All other things being equal, MSCI targets for inclusion the most liquid securities in an industry group. In addition, securities that have inadequate liquidity are not considered for inclusion. MSCI does not define absolute minimum or maximum liquidity levels for stock inclusion or exclusion from the MSCI Singapore Index but considers each stock's relative standing within Singapore and between cycles. A useful measure to compare liquidity within the same market is the Annualized Traded Value Ratio ("ATVR"), which screens out extreme daily trading volumes and takes into account the difference in market capitalization size. The ATVR Ratio of each security is calculated via the following 3-step process:

•: First, monthly median traded values are computed using the daily median traded value, multiplied by the number of days in the month that the security traded. The daily traded value of a security is equal to the number of shares traded during the day, multiplied by the closing price of that security. The daily median traded value is the median of the daily traded values in a given month.
•: Second, the monthly median traded value ratio is obtained by dividing the monthly median traded value of a security by its free float adjusted security market capitalization at the end of the month.

IS-25

•: Third, the ATVR is obtained by multiplying the average of the monthly median trade value ratios of the previous 12 months—or the number of months for which this data is available—by 12.

Only securities of companies with an estimated overall or security free float greater than 15% are generally considered for inclusion in the MSCI Singapore Index.

For securities not subject to foreign ownership limitations, the free float of a security is estimated as its total number of shares outstanding less shareholdings classified as strategic and/or non-free float. For securities subject to foreign ownership limitations, the estimated free float available to foreign investors is equal to the lesser of (a) the total number of shares outstanding less shareholdings classified as strategic or non-free float and (b) foreign ownership limitation adjusted for non-free float stakes held by foreign investors.

MSCI free float adjusts the market capitalization of each security using an adjustment factor referred to as the Foreign Inclusion Factor ("FIF"). Securities not subject to foreign ownership limitations have a FIF equal to (a) the estimated free float, rounded up to the closest 5%, if the securities have a free float greater than 15% or (b) the estimated free float, rounded to the closest 1%, if the securities have a free float less than 15%. For securities subject to foreign ownership limitations, the FIF is equal to the lesser of (a) the estimated free float available to foreign investors (i) rounded up to the closest 5%, if the free float is greater than 15% or (ii) rounded to the closest 1%, if the free float is less than 15% and (b) foreign ownership limitation rounded to the closest 1%.

The free float adjusted market capitalization of a security is calculated as the product of the FIF and the security's full market capitalization.

Computation of the MSCI Singapore Index

The MSCI Singapore Index is computed generally by multiplying the previous day's index level by the free float adjusted market capitalization level of each share in the MSCI Singapore Index on the prior day divided by the free float adjusted market capitalization level of each share in the MSCI Singapore Index on the current day. The numerator is adjusted market capitalization, but the denominator is unadjusted, meaning that the price adjustment factor is applied to the numerator, but not to the denominator.

MSCI Singapore Index Maintenance

There are three broad categories of MSCI Singapore Index maintenance:

•: An annual full country index review that reassesses the various dimensions of the equity universe in Singapore;
•: Quarterly index reviews, aimed at promptly reflecting other significant market events; and
•: Ongoing event-related changes, such as mergers and acquisitions, which are generally implemented in the index rapidly as they occur.

During the annual review, additions or deletions of securities are made (i) following the reappraisal of the free float adjusted industry group representation within a country relative to an 85% target, (ii) following an update of the minimum size guidelines for additions and deletions and (iii) based on a company's and/or security's free float of less than 15% that has decreased in size in terms of free float adjusted market capitalization due to reduction in free float or due to performance and that no longer meet certain criteria.

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During a quarterly index review, securities may be added to or deleted from the MSCI Singapore Index for a variety of reasons, including the following:

•: Additions or deletions of securities, due to one or more industry groups having become significantly over- or under-represented as a result of mergers, acquisitions, restructuring and other major market events affecting that industry group.
•: Additions or deletions resulting from changes in industry classification, significant increases or decreases in free float and relaxation/removal or decreases of foreign ownership limits not implemented immediately.
•: Additions of large companies that did not meet the minimum size criterion for early inclusion at the time of their initial public offering or secondary offering.
•: Replacement of companies which are no longer suitable industry representatives.
•: Deletion of securities whose issuing company and/or security free float has fallen to less than 15% and which do not meet certain criteria.
•: Deletion of securities that have become very small or illiquid.
•: Replacement of securities (additions or deletions) resulting from the review of price source for constituents with both domestic and foreign board quotations.

License Agreement with Morgan Stanley Capital International Inc. for the MSCI Singapore Index

We have entered into an agreement with Morgan Stanley Capital International Inc. ("MSCI") providing us and certain of our affiliates or subsidiaries identified in that agreement with a nonexclusive license and, for a fee, with the right to use the MSCI Singapore Index, which is owned and published by MSCI, in connection with certain securities, including the notes.

The notes are not sponsored, endorsed, sold or promoted by MSCI. Neither MSCI nor any other party makes any representation or warranty, express or implied to the owners of the notes or any member of the public regarding the advisability of investing in securities generally or in the notes particularly, or the ability of the MSCI Singapore Index to track general stock market performance. MSCI is the licensor of certain trademarks, service marks and trade names of MSCI and of MSCI Singapore Index which index is determined, composed and calculated by MSCI without regard to the issuer of these notes. MSCI has no obligation to take the needs of the issuer of these notes or the owners of these notes into consideration in determining, composing or calculating the MSCI Singapore Index. MSCI is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the notes to be issued or in the determination or calculation of the equation by which the notes are to be converted into cash. Neither MSCI nor any other party has an obligation or liability to owners of these notes in connection with the administration, marketing or trading of the notes.

ALTHOUGH MSCI SHALL OBTAIN INFORMATION FOR INCLUSION IN OR FOR USE IN THE CALCULATION OF THE MSCI INDEXES FROM SOURCES THAT MSCI CONSIDERS RELIABLE, NEITHER MSCI NOR ANY OTHER PARTY GUARANTEES THE ACCURACY AND/OR COMPLETENESS OF ANY MSCI INDEX OR ANY DATA INCLUDED THEREIN. NEITHER MSCI NOR ANY OTHER PARTY MAKES ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY LICENSEE, LICENSEE'S CUSTOMERS AND COUNTERPARTIES, OWNERS OF OR THE PRODUCTS, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE INDEXES OR ANY DATA INCLUDED THEREIN IN CONNECTION WITH THE RIGHTS LICENSED HEREUNDER OR FOR ANY OTHER USE. NEITHER MORGAN STANLEY NOR ANY OTHER PARTY MAKES ANY EXPRESS OR IMPLIED WARRANTIES, AND MSCI HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES

IS-27

OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INDEXES OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL MSCI OR ANY OTHER PARTY HAVE LIABILITY FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL OR ANY OTHER DAMAGES (INCLUDING LOST PROFITS) EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

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THE MSCI TAIWAN INDEX

General

We have derived all information regarding the MSCI Taiwan Index contained in this index supplement, including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information. Such information reflects the policies of, and is subject to change by, Morgan Stanley Capital International Inc. ("MSCI"). The MSCI Taiwan Index is calculated, maintained and published by MSCI. We make no representation or warranty as to the accuracy or completeness of such information.

The MSCI Taiwan Index is a free float adjusted market capitalization index of securities listed on the Taiwan Stock Exchange.

The MSCI Taiwan Index is reported by Bloomberg Financial Markets under the ticker symbol "TWY."

The underlying components

MSCI targets an 85% free float adjusted market representation level within each industry group in Taiwan. The security selection process within each industry group is based on analysis of the following:

•

Each company's business activities and the diversification that its securities would bring to the index.

•

The size of the securities based on free float adjusted market capitalization. All other things being equal, MSCI targets for inclusion the most sizable securities in an industry group. In addition, securities that do not meet the minimum size guidelines are not considered for inclusion. Though the following limits are subject to revision, as of the date of this index supplement, a security will be eligible for inclusion in the MSCI Taiwan Index if it achieves a free float adjusted market capitalization of $450 million and will be eligible for deletion if such capitalization falls below $225 million as of the yearly review. If, however, the free float adjusted market capitalization level falls significantly below the free float adjusted market capitalization level for deletions prior to a yearly review, for example during a quarterly review, then the security may be deleted prior to such yearly review.

•

The liquidity of the securities. All other things being equal, MSCI targets for inclusion the most liquid securities in an industry group. In addition, securities that have inadequate liquidity are not considered for inclusion. MSCI does not define absolute minimum or maximum liquidity levels for stock inclusion or exclusion from the MSCI Taiwan Index but considers each stock's relative standing within Taiwan and between cycles. A useful measure to compare liquidity within the same market is the Annualized Traded Value Ratio ("ATVR"), which screens out extreme daily trading volumes and takes into account the difference in market capitalization size. The ATVR Ratio of each security is calculated via the following 3-step process:

•: First, monthly median traded values are computed using the daily median traded value, multiplied by the number of days in the month that the security traded. The daily traded value of a security is equal to the number of shares traded during the day, multiplied by the closing price of that security. The daily median traded value is the median of the daily traded values in a given month.
•: Second, the monthly median traded value ratio is obtained by dividing the monthly median traded value of a security by its free float adjusted security market capitalization at the end of the month.

IS-29

•: Third, the ATVR is obtained by multiplying the average of the monthly median trade value ratios of the previous 12 months—or the number of months for which this data is available—by 12.

Only securities of companies with an estimated overall or security free float greater than 15% are generally considered for inclusion in the MSCI Taiwan Index.

The free float adjusted market capitalization of a security is calculated as the product of the FIF and the security's full market capitalization.

Computation of the MSCI Taiwan Index

The MSCI Taiwan Index is computed generally by multiplying the previous day's index level by the free float adjusted market capitalization level of each share in the MSCI Taiwan Index on the prior day divided by the free float adjusted market capitalization level of each share in the MSCI Taiwan Index on the current day. The numerator is adjusted market capitalization, but the denominator is unadjusted, meaning that the price adjustment factor is applied to the numerator, but not to the denominator.

MSCI Taiwan Index Maintenance

There are three broad categories of MSCI Taiwan Index maintenance:

•: An annual full country index review that reassesses the various dimensions of the equity universe in Taiwan;
•: Quarterly index reviews, aimed at promptly reflecting other significant market events; and
•: Ongoing event-related changes, such as mergers and acquisitions, which are generally implemented in the index rapidly as they occur.

IS-30

During a quarterly index review, securities may be added to or deleted from the MSCI Taiwan Index for a variety of reasons, including the following:

•: Additions or deletions of securities, due to one or more industry groups having become significantly over- or under-represented as a result of mergers, acquisitions, restructuring and other major market events affecting that industry group.
•: Additions or deletions resulting from changes in industry classification, significant increases or decreases in free float and relaxation/removal or decreases of foreign ownership limits not implemented immediately.
•: Additions of large companies that did not meet the minimum size criterion for early inclusion at the time of their initial public offering or secondary offering.
•: Replacement of companies which are no longer suitable industry representatives.
•: Deletion of securities whose issuing company and/or security free float has fallen to less than 15% and which do not meet certain criteria.
•: Deletion of securities that have become very small or illiquid.
•: Replacement of securities (additions or deletions) resulting from the review of price source for constituents with both domestic and foreign board quotations.

License Agreement with Morgan Stanley Capital International Inc.

We have entered into an agreement with Morgan Stanley Capital International Inc. ("MSCI") providing us and certain of our affiliates or subsidiaries identified in that agreement with a nonexclusive license and, for a fee, with the right to use the MSCI Taiwan Index, which is owned and published by MSCI, in connection with certain securities, including the notes.

The notes are not sponsored, endorsed, sold or promoted by MSCI. Neither MSCI nor any other party makes any representation or warranty, express or implied to the owners of the notes or any member of the public regarding the advisability of investing in securities generally or in the notes particularly, or the ability of the MSCI Taiwan Index to track general stock market performance. MSCI is the licensor of certain trademarks, service marks and trade names of MSCI and of MSCI Taiwan Index which index is determined, composed and calculated by MSCI without regard to the issuer of these notes. MSCI has no obligation to take the needs of the issuer of these notes or the owners of these notes into consideration in determining, composing or calculating the MSCI Taiwan Index. MSCI is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the notes to be issued or in the determination or calculation of the equation by which the notes are to be converted into cash. Neither MSCI nor any other party has an obligation or liability to owners of these notes in connection with the administration, marketing or trading of the notes.

IS-31

THE INDEXES OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL MSCI OR ANY OTHER PARTY HAVE LIABILITY FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL OR ANY OTHER DAMAGES (INCLUDING LOST PROFITS) EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

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S&P 500® INDEX

General

Unless otherwise stated, all information regarding the S&P 500® Index provided in this index supplement is derived from S&P, or other publicly available sources. Such information reflects the policies of S&P as stated in such sources, and such policies are subject to change by S&P. S&P is under no obligation to continue to publish, and may discontinue or suspend the publication of, the S&P 500® Index at any time. We do not assume any responsibility for the accuracy or completeness of any information relating to the S&P 500® Index.

As of April 1, 2008, the aggregate market value of the 500 companies included in the S&P 500® Index represented approximately 75% of the market value of U.S. equities. S&P chooses companies for inclusion in the S&P 500® Index with the aim of achieving a distribution by broad industry groupings that approximates the distribution of these groupings in the common stock population of the New York Stock Exchange, which S&P uses as an assumed model for the composition of the total market. Relevant criteria employed by S&P include the viability of the particular company, the extent to which that company represents the industry group to which it is assigned, the extent to which the market price of that company's common stock is generally responsive to changes in the affairs of the respective industry and the market value and trading activity of the common stock of that company.

The S&P 500® Index is reported by Bloomberg Financial Markets under the ticker symbol "SPX."

The underlying components

As of April 1, 2008, the 500 companies included in the S&P 500® Index were divided into 10 Global Industry Classification Sectors. The Global Industry Classification Sectors included (with the number of companies currently included in such sectors indicated in parentheses): Consumer Discretionary (86), Consumer Staples (40), Energy (36), Financials (92), Health Care (51), Industrials (56), Information Technology (71), Materials (28), Telecommunication Services (9) and Utilities (31). S&P may from time to time, in its sole discretion, add companies to, or delete companies from, the S&P 500® Index to achieve the objectives stated above.

The S&P 500® Index does not reflect the payment of dividends on the stocks underlying it and therefore the return on your securities will not be the same as the return you would receive if you were to purchase such underlying stocks and hold them until the maturity date.

Computation of the S&P 500® Index

On March 21, 2005, S&P began to calculate the S&P 500® Index based on a half float adjusted formula, and on September 16, 2005 the S&P 500® Index was fully float adjusted. S&P's criteria for selecting stocks for the S&P 500® Index will not be changed by the shift to float adjustment. However, the adjustment affects each company's weight in the S&P 500® Index (i.e., its market value).

Under float adjustment, the share counts used in calculating the S&P 500® Index will reflect only those shares that are available to investors and not all of a company's outstanding shares. S&P defines three groups of shareholders whose holdings are subject to float adjustment:

•: holdings by other publicly traded corporations, venture capital firms, private equity firms, strategic partners, or leveraged buyout groups;
•: holdings by government entities, including all levels of government in the United States or foreign countries; and
•: holdings by current or former officers and directors of the company, founders of the company, or family trusts of officers, directors, or founders, as well as holdings of trusts, foundations,

IS-33

pension funds, employee stock ownership plans, or other investment vehicles associated with and controlled by the company.

However, treasury stock, stock options, restricted shares, equity participation units, warrants, preferred stock, convertible stock, and rights are not part of the float. In cases where holdings in a group exceed 10% of the outstanding shares of a company, the holdings of that group will be excluded from the float adjusted count of shares to be used in the S&P 500® Index calculation. Mutual funds, investment advisory firms, pension funds, or foundations not associated with the company and investment funds in insurance companies, shares of a U.S. company traded in Canada as "exchangeable shares," shares that trust beneficiaries may buy or sell without difficulty or significant additional expense beyond typical brokerage fees, and, if a company has multiple classes of stock outstanding, shares in an unlisted or non-traded class if such shares are convertible by shareholders without undue delay and cost, are also part of the float.

For each stock, an investable weight factor ("IWF") is calculated by dividing the available float shares, defined as the total shares outstanding less shares held in one or more of the three groups listed above where the group holdings exceed 10% of the outstanding shares, by the total shares outstanding. The float adjusted index will then be calculated by dividing the sum of the IWF multiplied by both the price and the total shares outstanding for each stock by the index divisor. For companies with multiple classes of stock, S&P will calculate the weighted average IWF for each stock using the proportion of the total company market capitalization of each share class as weights.

The S&P 500® Index is calculated using a base-weighted aggregate methodology: the level of the S&P 500® Index reflects the total market value of all 500 S&P 500® component stocks relative to the S&P 500® Index's base period of 1941–43 (the 'base period').

An indexed number is used to represent the results of this calculation in order to make the value easier to work with and track over time.

The actual total market value of the S&P 500® component stocks during the base period has been set equal to an indexed value of 10. This is often indicated by the notation 1941–43=10. In practice, the daily calculation of the S&P 500® Index is computed by dividing the total market value of the S&P 500® component stocks by a number called the index divisor. By itself, the index divisor is an arbitrary number. However, in the context of the calculation of the S&P 500® Index, it is the only link to the original base period level of the S&P 500® Index. The index divisor keeps the S&P 500® Index comparable over time and is the manipulation point for all adjustments to the S&P 500® Index ("index maintenance").

Index maintenance includes monitoring and completing the adjustments for company additions and deletions, share changes, stock splits, stock dividends, and stock price adjustments due to company restructurings or spinoffs.

To prevent the level of the S&P 500® Index from changing due to corporate actions, all corporate actions which affect the total market value of the S&P 500® Index require an index divisor adjustment. By adjusting the index divisor for the change in total market value, the level of the S&P 500® Index remains constant. This helps maintain the level of the S&P 500® Index as an accurate barometer of stock market performance and ensures that the movement of the S&P 500® Index does not reflect the corporate actions of individual companies in the S&P 500® Index. All index divisor adjustments are made after the close of trading. Some corporate actions, such as stock splits and stock dividends, require simple changes in the common shares outstanding and the stock prices of the companies in the S&P 500® Index and do not require index divisor adjustments.

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The table below summarizes the types of index maintenance adjustments and indicates whether or not an index divisor adjustment is required.

Type of Corporate Action Required	Adjustment Factor	Divisor Adjustment
Stock split (e.g., 2-for-1)	Shares outstanding multiplied by 2; Stock price divided by 2	No
Share issuance (i.e., change is greater than or equal to 5%)	Shares outstanding plus newly issued shares	Yes
Share repurchase (i.e., change is greater than or equal to 5%)	Shares outstanding minus repurchased shares	Yes
Special cash dividends	Share price minus special dividend	Yes
Company change	Add new company market value minus old company market value	Yes
Rights offering	Price of parent company minus	Yes
	(Price of rights) (Right ratio)
Spinoffs	Price of parent company minus	Yes
	(Price of spinoff co.) (Right ratio)

Stock splits and stock dividends do not affect the index divisor of the S&P 500® Index, because following a split or dividend both the stock price and number of shares outstanding are adjusted by S&P so that there is no change in the market value of the S&P 500® component stock. All stock split and dividend adjustments are made after the close of trading on the day before the ex-date.

Each of the corporate events exemplified in the table requiring an adjustment to the index divisor has the effect of altering the market value of the S&P 500® component stock and consequently of altering the aggregate market value of the S&P 500® component stocks (the "Post-Event Aggregate Market Value"). In order that the level of the S&P 500® Index (the "Pre-Event Index Value") not be affected by the altered market value (whether increase or decrease) of the affected S&P 500® component stock, a new index divisor ("New Divisor") is derived as follows:

Post-Event Aggregate Market Value		=		Pre-Event Index Value New Divisor
New Divisor		=		Post-Event Aggregate Market Value Pre-Event Index Value

A large part of the index maintenance process involves tracking the changes in the number of shares outstanding of each of the S&P 500® Index companies. Four times a year, on a Friday close to the end of each calendar quarter, the share totals of companies in the S&P 500® Index are updated as required by any changes in the number of shares outstanding. After the totals are updated, the index divisor is adjusted to compensate for the net change in the total market value of the S&P 500® Index. In addition, any changes over 5% in the current common shares outstanding for the index companies

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are carefully reviewed on a weekly basis, and when appropriate, an immediate adjustment is made to the index divisor.

License Agreement with S&P

We or one of our affiliates and S&P are parties to a non-exclusive license agreement providing for the license to us, in exchange for a fee, of the right to use indices owned and published by S&P in connection with certain securities, including these securities. "Standard & Poor's®", "S&P®", "S&P 500®", "Standard & Poor's 500®", and "500®" are trademarks of Standard & Poor's Corporation and have been licensed for use by Credit Suisse.

The license agreement between S&P and us provides that language substantially the same as the following language must be stated in this pricing supplement:

The securities are not sponsored, endorsed, sold or promoted by Standard & Poor's Corporation ("S&P"). S&P makes no representation or warranty, express or implied, to the owners of the securities or any member of the public regarding the advisability of investing in securities generally or in the securities particularly or the ability of the S&P 500® Index to track general stock market performance. S&P's only relationship to the Licensee is the licensing of certain trademarks and trade names of S&P and of the S&P 500® Index which is determined, composed and calculated by S&P without regard to the Licensee or the securities. S&P has no obligation to take the needs of the Licensee or the owners of the securities into consideration in determining, composing or calculating the S&P 500® Index. S&P is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the securities to be issued, sold, purchased, written or entered into by Licensee or in the determination or calculation of the equation by which the securities are to be converted into cash. S&P has no obligation or liability in connection with the administration, marketing or trading of the securities.

S&P DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN. S&P MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE LICENSEE, OWNERS OF THE SECURITIES, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN IN CONNECTION WITH THE RIGHTS LICENSED HEREUNDER OR FOR ANY OTHER USE. S&P MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FORGOING, IN NO EVENT SHALL S&P HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

IS-36

THE TOPIX® INDEX

General

We have derived all information contained in this index supplement regarding the Tokyo Stock Price Index, or the TOPIX® Index, including, without limitation, its make-up, method of calculation and changes in its components, from publicly available information, including the websites of the TSE and other sources we believe to be reliable. Such information reflects the policies of, and is subject to change by, the TSE. The TOPIX® Index was developed by the TSE and is calculated, maintained and published by the TSE. We make no representation or warranty as to the accuracy or completeness of such information.

The TOPIX® Index was developed by the TSE. Publication of the TOPIX® Index began on July 1, 1969, based on an initial Index value of 100 at January 4, 1968, which was reset at 1,000 on April 1, 1998. The TOPIX® Index is computed and published every 15 seconds via TSE's Market Information System, and is reported to securities companies across Japan and available worldwide through computerized information networks.

The TOPIX® Index is reported by Bloomberg Financial Markets under the ticker symbol "TPX:IND."

The underlying components

The component stocks of the TOPIX® Index consist of all Japanese common stocks listed on the First Section of the TSE which have an accumulative length of listing of at least six months. The TOPIX® Index measures changes in the aggregate market value of these stocks. The TSE Japanese stock market is divided into two sections: the First Section and the Second Section. Listings of stocks on the TSE are divided between these two sections, with stocks listed on the First Section typically being limited to larger, longer established and more actively traded issues and the Second Section to smaller and newly listed companies. The component stocks of the TOPIX® Index are determined based on market capitalization and liquidity. Review and selection of component stocks is conducted semiannually, based on market data as of the base date for selection.

The TOPIX® Index is a weighted index, with the market price of each component stock multiplied by the number of shares listed. The TSE is responsible for calculating and maintaining the TOPIX® Index, and can add, delete or substitute the stocks underlying the TOPIX® Index or make other methodological changes that could change the value of the TOPIX® Index. The underlying stocks may be removed, if necessary, in accordance with deletion/addition rules which provide generally for the deletion of a stock from the TOPIX® Index if such stock ceases to meet the criteria for inclusion. Stocks listed on the Second Section of the TSE may be transferred to the First Section if they satisfy applicable criteria. Such criteria include numerical minimum values for number of shares listed, number of shareholders and average monthly trading volume, among others. Similarly, when a First Section stock falls within the coverage of TSE rules prescribing reassignment thereof to the Second Section, such stock will be removed from the First Section. As of October 15, 2007, stocks of 1,744 Japanese companies were assigned to the First Section of the TSE and stocks of 469 companies were assigned to the Second Section.

Computation of the TOPIX® Index

The TOPIX® Index is not expressed in Japanese Yen, but is presented in terms of points (as a decimal figure) rounded off to the nearest one-hundredth. The TOPIX® Index is calculated by multiplying 100 by the figure obtained by dividing the current free-float adjusted market value (the current market price per share at the time of the index calculation multiplied by the number of free-float adjusted common shares listed on the First Section of the TSE at the same instance) (the

IS-37

"Current Market Value") by the base market value (i.e., the Current Market Value on the base date) (the "Base Market Value").

The calculation of the Index can be represented by the following formula:

Index =

Current Market Value

Base Market Value

x 100

In order to maintain continuity, the Base Market Value is adjusted from time to time to ensure that it reflects only price movements resulting from auction market activity, and to eliminate the effects of other factors and prevent any instantaneous change or discontinuity in the level of the TOPIX® Index. Such factors include, without limitation: new listings, delistings, new share issues either through public offerings or through rights offerings to shareholders, issuance of shares as a consequence of exercise of convertible bonds or warrants, and transfer of listed securities from the First Section to the Second Section of the TSE.

The formula for the adjustment is as follows:

Adjusted Market Value on
Adjustment Date

Base Market Value before
adjustment

(Adjusted Market Value on Adjustment Date
± Adjustment Amount)

Base Market Value after adjustment

Where Adjustment Amount is equal to the changes in the number of shares included in the calculation of the TOPIX® Index multiplied by the price of those shares used for the purposes of the adjustment.

Therefore,

New Base
Market Value

Old Base Market Value x
(Adjusted Market Value on Adjustment Date
± Adjustment Amount)

Adjusted Market Value on Adjustment Date

The Base Market Value remains at the new value until a further adjustment is necessary as a result of another change. As a result of such change affecting the Current Market Value or any stock underlying the TOPIX® Index, the Base Market Value is adjusted in such a way that the new value of the TOPIX® Index will equal the level of the TOPIX® Index immediately prior to such change.

No adjustment is made to the Base Market Value, however, in the case of events such as stock splits or decreases in capital without compensation, which theoretically do not affect market value.

The Tokyo Stock Exchange

The TSE is one of the world's largest securities exchanges in terms of market capitalization. Trading hours are currently from 9:00 a.m. to 11:00 a.m. and from 12:30 p.m. to 3:00 p.m., Tokyo time, Monday through Friday.

Due to the time zone difference, on any normal trading day the TSE will close prior to the opening of business in New York City on the same calendar day. Therefore, the closing level of the TOPIX® Index on a trading day will generally be available in the United States by the opening of business on the same calendar day.

The TSE has adopted certain measures, including daily price floors and ceilings on individual stocks, intended to prevent any extreme short-term price fluctuations resulting from order imbalances.

IS-38

In general, any stock listed on the TSE cannot be traded at a price lower than the applicable price floor or higher than the applicable price ceiling. These price floors and ceilings are expressed in absolute Japanese yen, rather than percentage limits based on the closing price of the stock on the previous trading day. In addition, when there is a major order imbalance in a listed stock, the TSE posts a "special bid quote" or a "special asked quote" for that stock at a specified higher or lower price level than the stock's last sale price in order to solicit counter-orders and balance supply and demand for the stock. Prospective investors should also be aware that the TSE may suspend the trading of individual stocks in certain limited and extraordinary circumstances, including, for example, unusual trading activity in that stock. As a result, changes in the TOPIX® Index may be limited by price limitations or special quotes, or by suspension of trading, on individual stocks that make up the TOPIX® Index, and these limitations, in turn, may adversely affect the value of the notes.

License Agreement with the TSE

(10): CS: Please forward relevant license and disclaimer language to Cleary for inclusion in this index or revise and/or sign-off internally.

We have entered into a non-exclusive license agreement with the TSE providing for the license to Credit Suisse and certain of our affiliated or subsidiary companies, in exchange for a fee, of the right to use the TOPIX® Index, which is owned and published by the TSE, in connection with the notes.

The TOPIX® Index Value and the TOPIX® Trademarks are subject to the intellectual property rights owned by the Tokyo Stock Exchange, Inc. and the Tokyo Stock Exchange, Inc. owns all rights relating to the TOPIX® Index, such as calculation, publication and use of the TOPIX® Index Value and relating to the TOPIX® Trademarks.

The Tokyo Stock Exchange, Inc. shall reserve the rights to change the methods of calculation or publication, to cease the calculation or publication of the TOPIX® Index Value or to change the TOPIX® Trademarks or cease the use thereof.

The Tokyo Stock Exchange, Inc. makes no warranty or representation whatsoever, either as to the results stemming from the use of the TOPIX® Index Value and the TOPIX® Trademarks or as to the figure at which the TOPIX® Index Value stands on any particular day.

The Tokyo Stock Exchange, Inc. gives no assurance regarding accuracy or completeness of the TOPIX® Index Value and data contained therein. Further, the Tokyo Stock Exchange, Inc. shall not be liable for the miscalculation, incorrect publication, delayed or interrupted publication of the TOPIX® Index Value.

The notes are in no way sponsored, endorsed or promoted by the Tokyo Stock Exchange, Inc.

The Tokyo Stock Exchange, Inc. shall not bear any obligation to give an explanation of the notes or any advice on investments to any purchaser of the notes or to the public.

The Tokyo Stock Exchange, Inc. neither selects specific stocks or groups thereof nor takes into account any needs of the issuer or any purchaser of the notes, for calculation of the TOPIX Index Value.

Including but not limited to the foregoing, the Tokyo Stock Exchange, Inc. shall not be responsible for any damage resulting from the issue and sale of the notes.

"TOPIX®" and "TOPIX Index®" are trademarks of the Tokyo Stock Exchange, Inc. and prior to the settlement date we expect them to be licensed for use by Credit Suisse. The notes have not been and will not be passed on by the TSE as to their legality or suitability. The notes will not be issued, endorsed, sold or promoted by the TSE. THE TSE MAKES NO WARRANTIES AND BEARS NO LIABILITY WITH RESPECT TO THE NOTES.

IS-39

QuickLinks

INDEX SUPPLEMENT TO THE PROSPECTUS SUPPLEMENT DATED MARCH 24, 2008, AND PROSPECTUS DATED MARCH 29, 2007
TABLE OF CONTENTS
THE NOTES
Medium-Term Notes
Reference Indices
License Agreements
RISK FACTORS
THE REFERENCE INDICES
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