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Supplement to the Fidelity^® Advisor Aggressive Growth Fund
Class A, Class T,
Class B, and Class C
October 31, 2000 Prospectus

<R>Effective July 2001, 0.25% of each Class A and Class T 12b-1 fee will be classified as a service fee under each Class A and Class T Distribution and Service Plan. The reclassification of part of the 12b-1 fee will not increase the amounts paid under each plan.</R>

The following information replaces footnote C to the "Shareholder fees (paid by the investor directly)" table in the "Fee Table" section on page 4.

^CCertain purchases of Class A and Class T shares will not be subject to a front-end sales charge but will be subject to a contingent deferred sales charge of 0.25% if redeemed within one year of purchase. See "Special Purchase Shares" on page 28.

The following information replaces similar information found under the heading "Buying Shares" in the "Buying and Selling Shares" section on page 11.

There is no minimum account balance or initial or subsequent purchase minimum for (i) certain Fidelity retirement accounts funded through salary deduction, or accounts opened with the proceeds of distributions from such retirement accounts or (ii) certain mutual fund wrap program accounts. An eligible wrap program must offer asset allocation services, charge an asset-based fee to its participants for asset allocation and/or other advisory services, and meet trading and other operational requirements under an appropriate agreement with FDC. In addition, the fund may waive or lower purchase minimums in other circumstances.

The following information replaces the biographical information found in the "Fund Management" section on page 22.

Rajiv Kaul is manager of Advisor Aggressive Growth, which he has managed since June 2001. Since joining Fidelity in 1996, Mr. Kaul has worked as a research analyst and manager.

The following information replaces footnote A to the "Sales Charges and Concessions" tables on page 23.

^ASee "Special Purchase Shares" section on page 28.

<R>The following information replaces similar information for Class A found under the heading "Fund Distribution" in the "Fund Services" section on page 25.</R>

<R>A front-end sales charge will not apply to the following Class A shares:</R>

<R>1. Purchased for an employee benefit plan (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian, with at least $25 million or more in plan ass</R>ets;

<R>3. Purchased for an employee benefit plan (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program investing through a trust institution, bank trust department or insurance company, or any such institution's broker-dealer affiliate that is not part of an organization primarily engaged in the brokerage business. Employee benefit plans (except SIMPLE IRA, SEP, and SARSEP plans and plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) and 403(b) programs that participate in the Advisor Retirement Connection or are Fidelity Advisor 403(b) programs for which Fidelity or an affiliate serves as custodian, do not qualify for this waiver;</R>

<R>The following information supplements the information for Class A found under the heading "Fund Distribution" in the "Fund Services" section beginning on page 25.</R>

<R>A front-end sales charge will not apply to the following Class A shares:</R>

<R></R>11. Purchased to repay a loan against Class A or Class B shares held in the investor's Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian.

<R>The following information replaces similar information for Class T found under the heading "Fund Distribution" in the "Fund Services" section on page 27.</R>

<R>A front-end sales charge will not apply to the following Class T shares:</R>

<R></R>5. Purchased for an employee benefit plan (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian;

<R></R>6. Purchased for a Fidelity or Fidelity Advisor account with the proceeds of a distribution from (i) an insurance company separate account used to fund annuity contracts for employee benefit plans, 403(b) programs, or plans covering sole-proprietors (formerly Keogh/H.R. 10 plans) that are invested in Fidelity Advisor or Fidelity funds, or (ii) an employee benefit plan, a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian, or plan covering a sole-proprietor (formerly Keogh/H.R. 10 plan) that is invested in Fidelity Advisor or Fidelity funds. (Distributions other than those transferred to an IRA account must be transferred directly into a Fidelity account.);

<R>Effective October 15, 2001, the following information found under the heading "Fund Distribution" in the "Fund Services" section on page 27 will no longer be applicable.</R>

<R></R>8. Purchased with redemption proceeds from other mutual fund complexes on which you have previously paid a front-end sales charge or CDSC;

<R>The following information supplements the information for Class T found under the heading "Fund Distribution" in the "Fund Services" section beginning on page 27.</R>

<R>A front-end sales charge will not apply to the following Class T shares:</R>

<R></R>15. Purchased to repay a loan against Class T shares held in the investor's Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian.

The following information replaces the "Finder's Fee" information found in the "Fund Distribution" section beginni<R>ng on</R> page 28.

Special Purchase Shares. Certain Class A and Class T shares may be subject to a CDSC of 0.25% of the lesser of the cost of the shares at the date of purchase or the value of the shares at the time of redemption. These shares, referred to in this prospectus as "Special Purchase Shares," are Class A and Class T shares sold by investment professionals who receive a finder's fee from FDC equal to 0.25% of their purchase amount. Finder's fees are paid only in connection with purchases of (i) Class A shares in amounts of $1 million or more that qualify for a Class A load waiver; (ii) Class A shares in amounts of $25 million or more; and (iii) Class T shares in amounts of $1 million or more. Finder's fees are not paid in connection with purchases of Class A or Class T shares by insurance company separate accounts.

The CDSC will be assessed on Special Purchase Shares if they do not remain in Class A or Class T shares of the Fidelity Advisor funds, or Daily Money Class shares of Treasury Fund, Prime Fund, or Tax-Exempt Fund, for a period of at least one uninterrupted year. Shares acquired through reinvestment of dividends or capital gain distributions will not be subject to a CDSC.

To determine the applicability of the CDSC, Class A, Class T, or Daily Money Class shares representing reinvested dividends and capital gains will be redeemed first, followed by Special Purchase Shares that have been held for the longest period of time. Special Purchase Shares held for less than one year will be redeemed last.

To qualify to receive a finder's fee, an investment professional must notify Fidelity in advance of the eligible purchase.

The CDSC on Special Purchase Shares will not apply to the redemption of shares:

1. Acquired by insurance company separate accounts prior to April 1, 2001;

2. For plan loans or distributions or exchanges to non-Advisor fund investment options from employee benefit plans (except shares of SIMPLE IRA, SEP, and SARSEP plans and plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans) purchased on or after February 11, 1999) and 4<R>03(b) programs other than Fidelity Advisor 403(b) programs for which Fidelity or an affiliate ser</R>ves as custodian; or

3. For disability, payment of death benefits, or minimum required distributions starting at age 70 1/2 from Traditional IRAs, Roth IRAs, SIMPLE IRAs, SEPs, SARSEPs, and plans covering a sole-proprietor or self-employed individuals and their employees (formerly Keogh/H.R. 10 plans).

To qualify for a Special Purchase Share CDSC waiver, you must notify Fidelity in advance of your redemption.

Supplement to the Fidelity^® Advisor
Aggressive
Growth Fund
Institutional Class
October 31, 2000 Prospectus

The following information supplemen<R>ts t</R>he information found under the heading "Buying Shares" in the "Buying and Selling Shares" section beginning on page 8.

<R>Institutional Class shares are offered to:</R>

7. Employee benefit plan programs covering employees of broker-dealers, registered investment advisers, trust institutions and bank trust departments, and insurance companies having agreements with FDC.

<R>8. Qualified state tuition programs for which FMR or an affiliate serves as investment manager.</R>

The following information replaces similar information found un<R>der the heading "Minimums" in the "Buying and S</R>elling Shares" section on page 10.

There is no minimum account balance or initial or subsequent purchase minimum for (i) investments through Portfolio Advisory Services^SM , (ii) certain Fidelity retirement accounts funded through salary deduction, or accounts opened with the proceeds of distributions from such retirement accounts, <R>(iii) investments through a qualified state tuition program for which FMR or an affiliate serves as investment manager, or (iv) certain mu</R>tual fund wrap program accounts. An eligible wrap program must offer asset allocation services, charge an asset-based fee to its participants for asset allocation and/or other advisory services, and meet trading and other operational requirements under an appropriate agreement with FDC. In addition, the fund may waive or lower purchase minimums in other circumstances.

The following information replaces the biographical information found in the "Fund Management" section on page 19.

Rajiv Kaul is manager of Advisor Aggressive Growth, which he has managed since June 2001. Since joining Fidelity in 1996, Mr. Kaul has worked as a research analyst and manager.

SUPPLEMENT TO THE

FIDELITY^® ADVISOR AGGRESSIVE GROWTH FUND

A Fund of Fidelity Securities Fund

Class A, Class T, Class B, Class C, and Institutional Class

October 31, 2000

STATEMENT OF ADDITIONAL INFORMATION

<R>The following information replaces similar information found under the heading "Class A Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section on page 15.</R>

<R>1. to shares purchased for an employee benefit plan (as defined in the Employee Retirement Income Security Act) (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian, with at least $25 million or more in plan assets;</R>

<R>3. to shares purchased for an employee benefit plan (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program investing through a trust institution, bank trust department or insurance company, or any such institution's broker-dealer affiliate that is not part of an organization primarily engaged in the brokerage business. Employee benefit plans (except SIMPLE IRA, SEP, and SARSEP plans and plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) and 403(b) programs that participate in the Advisor Retirement Connection or are Fidelity Advisor 403(b) programs for which Fidelity or an affiliate serves as custodian, do not qualify for this waiver;</R>

<R>The following information supplements the information found under the heading "Class A Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section on page 15.</R>

<R>11. to shares purchased to repay a loan against Class A or Class B shares held in the investor's Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian.</R>

<R>The following information replaces similar information found under the heading "Class T Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section beginning on page 15.</R>

<R>5. to shares purchased for an employee benefit plan (except a SIMPLE IRA, SEP, or SARSEP plan or a plan covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans)) or a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian;</R>

<R>6. to shares purchased for a Fidelity or Fidelity Advisor account (including purchases by exchange) with the proceeds of a distribution from (i) an insurance company separate account used to fund annuity contracts for employee benefit plans, 403(b) programs or plans covering sole-proprietors (formerly Keogh/H.R. 10 plans) that are invested in Fidelity Advisor or Fidelity funds or (ii) an employee benefit plan, a 403(b) program other than a Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian, or plan covering a sole-proprietor (formerly Keogh/H.R. 10 plan) that is invested in Fidelity Advisor or Fidelity funds. (Distributions other than those transferred to an IRA account must be transferred directly into a Fidelity account.);</R>

<R>Effective October 15, 2001, the following information found under the heading "Class T Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section on page 16 will no longer be applicable.</R>

<R>8. to shares purchased with redemption proceeds from other mutual fund complexes on which the investor has paid a front-end or contingent deferred sales charge (CDSC);</R>

<R>The following information supplements the information found under the heading "Class T Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section beginning on page 15.</R>

<R>15. to shares purchased to repay a loan against Class T shares held in the investor's Fidelity Advisor 403(b) program for which Fidelity or an affiliate serves as custodian.</R>

<R>The following information supplements the information found under the heading "Institutional Class Shares Only" in the "Additional Purchase, Exchange and Redemption Information" section beginning on page 16.</R>

<R>AAG/AAGIB-01-02 July 16, 2001
1.756193.101</R>

<R>Institutional Class shares are offered to:</R>

<R>8. Qualified state tuition programs for which FMR or an affiliate serves as investment manager.</R>

<R>The following information replaces the information found under the heading"Finder's Fee" in the "Additional Purchase, Exchange and Redemption Information" section beginning on page 17.</R>

Class A and Class T Shares Only

For all funds, on eligible purchases of (i) Class A shares in amounts of $1 million or more that qualify for a Class A load waiver, (ii) Class A shares in amounts of $25 million or more, or (iii) Class T shares in amounts of $1 million or more, investment professionals may be compensated at the time of purchase with a finder's fee at the rate of 0.25% of the purchase amount.

Except as provided below, investment professionals may be eligible for a finder's fee at the rate of 0.25% of the purchase amount on the following purchases of Class A shares of all funds made through broker-dealers and banks: an individual trade of $25 million or more; an individual trade of $1 million or more that is load waived; a trade that brings the value of the accumulated account(s) of an investor (including an employee benefit plan (except a SEP or SARSEP plan or a plan covering self-employed individuals and their employees (formerly a Keogh/H.R. 10 plan)) or 403(b) program) over $25 million; a load waived trade that brings the value of the accumulated account(s) of an investor (including an employee benefit plan (except a SEP or SARSEP plan or a plan covering self-employed individuals and their employees (formerly a Keogh/H.R. 10 plan)) or 403(b) program) over $1 million; a trade for an investor with an accumulated account value of $25 million or more; a load waived trade for an investor with an accumulated account value of $1 million or more; an incremental trade toward an investor's $25 million "Letter of Intent"; and an incremental load waived trade toward an investor's $1 million "Letter of Intent."

Except as provided below, investment professionals may be eligible for a finder's fee at the rate of 0.25% of the purchase amount on the following purchases of Class T shares of all funds made through broker-dealers and banks: an individual trade of $1 million or more; a trade that brings the value of the accumulated account(s) of an investor (including an employee benefit plan (except a SEP or SARSEP plan or a plan covering self-employed individuals and their employees (formerly a Keogh/H.R. 10 plan)) or 403(b) program) over $1 million; a trade for an investor with an accumulated account value of $1 million or more; and an incremental trade toward an investor's $1 million "Letter of Intent."

Investment professionals must notify FDC in advance of a purchase eligible for a finder's fee, and may be required to enter into an agreement with FDC in order to receive the finder's fee.

The CDSC on Special Purchase Shares will not apply to the redemption of shares:

1. Acquired by insurance company separate accounts prior to April 1, 2001;

<R>2. For plan loans or distributions or exchanges to non-Advisor fund investment options from employee benefit plans (except shares of SIMPLE IRA, SEP, and SARSEP plans and plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans) purchased on or after February 11, 1999) and 403(b) programs other than Fidelity Advisor 403(b) programs for which Fidelity or an affiliate serves as custodian; or</R>

3. For disability, payment of death benefits, or minimum required distributions starting at age 70 1/2 from Traditional IRAs, Roth IRAs, SIMPLE IRAs, SEPs, SARSEPS and plans covering a sole proprietor or self-employed individuals and their employees (formerly Keogh/H.R. 10 plans).

A waiver form must accompany these transactions.

<R>During the period from March 16, 2000 through December 31, 2000, Mr. Cook served as a Member of the Advisory Board. Effective January 1, 2001, Mr. Cook serves as a Member of the Board of Trustees. The following information replaces the similar information found in the "Trustees and Officers" section on page 19.</R>

<R>J. MICHAEL COOK (58), Trustee (2001). Prior to Mr. Cook's retirement in May 1999, he served as Chairman and Chief Executive Officer of Deloitte & Touche LLP, Chairman of the Deloitte & Touche Foundation, and a member of the Board of Deloitte Touche Tohmatsu. He currently serves as a Director of International Flavors & Fragrances, Inc. (2000), Rockwell International (electronic controls and communications products, 2000), The Dow Chemical Company (2000), and HCA - The Healthcare Company (1999). He is a Member of the Advisory Board of the Securities Regulation Institute, Chairman Emeritus of the Board of Catalyst (a leading organization for the advancement of women in business), a Director of the STAR Foundation (Society to Advance the Retarded and Handicapped), and is Chairman of the Accountability Advisory Panel to the Comptroller General of the United States. He also serves as a member of the Board of Overseers of the Columbia Business School and a Member of the Advisory Board of the Graduate School of Business of the University of Florida.</R>

<R>During the period from June 15, 2000 through December 31, 2000, Ms. Knowles served as a Member of the Advisory Board. Effective January 1, 2001, Ms. Knowles serves as a Member of the Board of Trustees. The following information replaces the similar information found in the "Trustees and Officers" section beginning on page 19.</R>

<R>MARIE L. KNOWLES (54), Trustee (2001). Prior to Ms. Knowles' retirement in June 2000, she served as Executive Vice President and Chief Financial Officer of Atlantic Richfield Company (ARCO) (diversified energy, 1996-2000). From 1993 to 1996, she was a Senior Vice President of ARCO and President of ARCO Transportation Company. She served as a Director of ARCO from 1996 to 1998. She currently serves as a Director of Phelps Dodge Corporation (copper mining and manufacturing), URS Corporation (multidisciplinary engineering, 1999), and American West Holdings Corporation (aviation and travel services, 1999) and previously served as a Director of ARCO Chemical Corporation and Vastar Resources, Inc. Ms. Knowles serves as a member of the National Board of the Smithsonian Institution, she is a Trustee of the Brookings Institution and serves as a member of the Advisory Board for the School of Engineering of the University of Southern California.</R>

<R>Mr. McDonough served on the Board of Trustees through December 31, 2000. The following information has been removed from the "Trustees and Officers" section beginning on page 19.</R>

<R>GERALD C. McDONOUGH (72), Trustee and Chairman of the non-interested Trustees, is Chairman of G.M. Management Group (strategic advisory services). Mr. McDonough is a Director and Chairman of the Board of York International Corp. (air conditioning and refrigeration), a Director of Associated Estates Realty Corporation (a real estate investment trust), and a Director of Barpoint.com (online and wireless product information service, 2000). Mr. McDonough served as a Director of ACME-Cleveland Corp. (metal working, telecommunications, and electronic products) from 1987-1996 and Brush-Wellman Inc. (metal refining) from 1983-1997. He also served as a Director of Commercial Intertech Corp. (hydraulic systems, building systems, and metal products) from 1992-2000 and CUNO, Inc. (liquid and gas filtration products) from 1996-2000.</R>

<R>Effective January 1, 2001, Mr. Mann serves as Chairman of the non-interested Trustees. The following information replaces the similar information found in the "Trustees and Officers" section beginning on page 19.</R>

<R>MARVIN L. MANN (68), Trustee and Chairman of the non-interested Trustees (2001), is Chairman Emeritus of Lexmark International, Inc. (computer peripherals) where he remains a member of the Board. Prior to 1991, he held the positions of Vice President of International Business Machines ("IBM") and President and General Manager of various IBM divisions and subsidiaries. Mr. Mann is a Director of PolyOne Corporation (chemicals) and Imation Corp. (imaging and information storage, 1997). He is also a Board member of Acertna Corporation (telecommunications testing and management, 1999).</R>

<R>Effective November 1, 2000, Mr. Stavropoulos serves as a Member of the Advisory Board. The following information supplements similar information found in the "Trustees and Officers" section beginning on page 19.</R>

<R>WILLIAM S. STAVROPOULOS (62), Member of the Advisory Board of Securities Fund (2000). Mr. Stavropoulos also serves as a Trustee (2001) or Member of the Advisory Board (2000) of other investment companies advised by FMR. He is Chairman of the Board and Chairman of the Executive Committee (2000) and a Director of The Dow Chemical Company. Since joining The Dow Chemical Company in 1967, Mr. Stavropoulos served in numerous senior management positions, including President (1993-2000) and Chief Executive Officer (1995-2000). Currently, he is a Director of NCR Corporation (data warehousing and technology solutions, 1997), BellSouth Corporation (telecommunications, 1997), and the Chemical Financial Corporation. He also serves as a member of the Board of Trustees of the American Enterprise Institute for Public Policy Research and Fordham University. In addition, Mr. Stavropoulos is a member of the American Chemical Society, The Business Council, J.P. Morgan International Council, World Business Council for Sustainable Development, and the University of Notre Dame Advisory Council for the College of Science.</R>

<R>Mr. Williams served on the Board of Trustees through December 31, 2000. The following information has been removed from the "Trustees and Officers" section beginning on page 19.</R>

<R>THOMAS R. WILLIAMS (72), Trustee, is President of The Wales Group, Inc. (management and financial advisory services). Prior to retiring in 1987, Mr. Williams served as Chairman of the Board of First Wachovia Corporation (bank holding company), and Chairman and Chief Executive Officer of The First National Bank of Atlanta and First Atlanta Corporation (bank holding company). He is currently a Director of National Life Insurance Company of Vermont and American Software, Inc. Mr. Williams was previously a Director of ConAgra, Inc. (agricultural products), Georgia Power Company (electric utility), and Avado, Inc. (restaurants).</R>

<R>Effective April 1, 2001, Mr. Maloney serves as Assistant Treasurer. The following information supplements similar information found in the "Trustees and Officers" section beginning on page 19.</R>

<R>PAUL F. MALONEY (51) is Assistant Treasurer of Advisor Aggressive Growth. Mr. Maloney also serves as Assistant Treasurer of other Fidelity funds (2001) and is an employee of FMR. Previously, Mr. Maloney served as Vice President of Fidelity Reporting, Accounting and Pricing Services (FRAPS).</R>

<R>The following information supplements the information found in the "Transfer and Service Agent Agreements" section on page 27.</R>

<R>In addition, FIIOC receives the pro rata portion of the transfer agency fees applicable to shareholder accounts in a qualified state tuition program (QSTP), as defined under the Small Business Job Protection Act of 1996, managed by FMR or an affiliate, according to the percentage of the QSTP's assets that is invested in a fund.</R>