Supplement to the
Fidelity® Mega Cap Stock Fund
Class A, Class T, Class C, Class I and Class Z
August 29, 2016
Prospectus

Effective after close of business on March 24, 2017, Class T will be renamed Class M.

Effective December 12, 2016, the following information replaces similar information found in the "Fund Summary" section under the heading "Purchase and Sale of Shares".

Purchase and Sale of Shares

You may buy or sell Class A, Class T, Class C, Class I, and Class Z shares through a retirement account or through an investment professional. You may buy or sell shares in various ways:

Internet

institutional.fidelity.com

Phone

To reach a Fidelity representative 1-877-208-0098

Mail

Fidelity Investments
P.O. Box 770002
Cincinnati, OH 45277-0081

Overnight Express:
Fidelity Investments
100 Crosby Parkway
Covington, KY 41015

Class Z shares are offered to (i) employee benefit plans investing through an intermediary, (ii) employee benefit plans not recordkept by Fidelity, and (iii) certain managed account programs. For this purpose, employee benefit plans generally include profit sharing, 401(k), and 403(b) plans, but do not include: IRAs; SIMPLE, SEP, or SARSEP plans; plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans); health savings accounts; or plans investing through the Fidelity Advisor 403(b) program. Plan participants may purchase Class Z shares of the fund only if Class Z shares are eligible for sale and available through their plan. You may buy or sell shares by contacting your employee benefit plan.

Class I and Class Z eligibility requirements are listed in the Additional Information about the Purchase and Sale of Shares section of the prospectus.

The price to buy one share of Class A or Class T is its offering price, if you pay a front-end sales charge, or its net asset value per share (NAV), if you qualify for a front-end sales charge waiver. The price to buy one share of Class C, Class I, or Class Z is its NAV. Shares will be bought at the offering price or NAV, as applicable, next calculated after an order is received in proper form.

The price to sell one share of Class A, Class T, or Class C is its NAV, minus any applicable contingent deferred sales charge (CDSC). The price to sell one share of Class I or Class Z is its NAV. Shares will be sold at the NAV next calculated after an order is received in proper form, minus any applicable CDSC.

The fund is open for business each day the New York Stock Exchange (NYSE) is open.

Initial Purchase Minimum - Class A, Class T, Class C, and Class I	$2,500
Fidelity Advisor® Traditional IRA, Roth IRA, Rollover IRA, and Simplified Employee Pension-IRA for which Fidelity Management Trust Company or an affiliate serves as custodian	$500
Through a regular investment plan established at the time the fund position is opened	$100

There is no purchase minimum for Class Z shares.

The fund may waive or lower purchase minimums in other circumstances.

Effective December 12, 2016, the following information replaces similar information found in the "Shareholder Information" section under the heading "Additional Information about the Purchase and Sale of Shares".

General Information

Ways to Invest

You may buy or sell shares through a retirement account or an investment professional. When you invest through a retirement account or an investment professional, the procedures for buying, selling, and exchanging shares and the account features, policies, and fees may differ. Additional fees may apply to your investment in shares, including a transaction fee if you buy or sell shares through a broker or other investment professional.

Information on Placing Orders

You should include the following information with any order:

Your name
Your account number
Type of transaction requested
Name(s) of fund(s) and class(es)
Dollar amount or number of shares

Certain methods of contacting Fidelity may be unavailable or delayed (for example, during periods of unusual market activity). In addition, the level and type of service available may be restricted.

Effective December 12, 2016, the following information replaces similar information found in the "Shareholder Information" section under the heading "Buying Shares".

Additional Information Regarding Class Z Eligibility

Class Z shares are offered to:

1. Employee benefit plans investing through an intermediary and employee benefit plans not recordkept by Fidelity. For this purpose, employee benefit plans generally include profit sharing, 401(k), and 403(b) plans, but do not include: IRAs; SIMPLE, SEP, or SARSEP plans; plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans); health savings accounts; or plans investing through the Fidelity Advisor^® 403(b) program; and

2. Broker-dealer, registered investment adviser, insurance company, trust institution and bank trust department managed account programs that charge an asset-based fee.

Please contact Fidelity or your investment professional for more information about Class Z shares.

Minimum Waivers

For Class A, Class T, and Class C:

There is no minimum balance or purchase minimum for (i) certain Fidelity^® retirement accounts funded through salary deduction, or fund positions opened with the proceeds of distributions from such retirement accounts or from a Fidelity^® systematic withdrawal service, 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.

For Class I:

There is no minimum balance or purchase minimum for (i) investments through Portfolio Advisory Services, (ii) certain Fidelity^® retirement accounts funded through salary deduction, or fund positions opened with the proceeds of distributions from such retirement accounts or from a Fidelity^® systematic withdrawal service, (iii) investments through a mutual fund or a qualified tuition program for which Fidelity serves as investment manager, or (iv) 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.

For Class Z:

There is no minimum balance or purchase minimum for Class Z shares.

Effective December 12, 2016, the following information supplements similar information found in the "Shareholder Information" section under the heading "Selling Shares".

Class Z:

When your relationship with your managed account provider is terminated, your shares may be sold at the NAV next calculated, in which case the redemption proceeds will remain in your account pending your instruction.

Effective December 12, 2016, the following information replaces similar information found in the "Shareholder Information" section under the heading "Exchanging Shares".

As a Class Z shareholder, you have the privilege of exchanging Class Z shares for the same class of shares of other Fidelity^{^®}funds that offer Advisor classes of shares or Class Z shares of other Fidelity^® funds available through your employee benefit plan, or if the Fidelity^® fund does not offer Class Z shares, then other classes of the Fidelity^® fund that are available through your plan.

Effective December 12, 2016, the information found in the "Shareholder Information" section under the heading "Dividends and Capital Gain Distributions" applies to Class A, Class T, Class C, Class I, and Class Z.

AGII-17-01
1.885801.113

March 1, 2017