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Summary Prospectus
TRBCX
May 1, 2011

T. Rowe Price Blue Chip Growth Fund
A stock fund seeking long-term capital growth through investments in high-quality U.S. growth companies.
Before you invest, you may want to review the fund’s prospectus, which contains more information about the fund and its risks. You can find the fund’s prospectus and other information about the fund online at troweprice.com/prospectusesandreports. You can also get this information at no cost by calling 1-800-638-5660 or by sending an e-mail request to info@troweprice.com. This Summary Prospectus incorporates by reference the fund’s prospectus, dated May 1, 2011, and Statement of Additional Information, dated May 1, 2011. The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Summary

Investment Objective

The fund seeks to provide long-term capital growth. Income is a secondary objective.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)
Maximum sales charge (load) imposed on purchases	NONE

Maximum deferred sales charge (load)	NONE

Redemption fee	NONE

Maximum account fee	$10^a
Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Management fees	0.60%

Distribution and service (12b-1) fees	0.00%

Other expenses	0.17%

Total annual fund operating expenses	0.77%

a Nonretirement accounts with less than a $2,000 balance (with certain exceptions) may be subject to an annual $10 fee.

Example This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

1 year	3 years	5 years	10 years
$79	$246	$428	$954

Portfolio Turnover The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 46.8% of the average value of its portfolio.

T. Rowe Price

Investments, Risks, and Performance

Principal Investment Strategies The fund will normally invest at least 80% of its net assets (including any borrowings for investment purposes) in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria, as previously described, and purchase securities that the fund’s management believes will provide an opportunity for substantial appreciation. These situations might arise when the fund’s management believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will typically be invested in U.S. common stocks, the fund may invest in foreign stocks in keeping with the fund’s objectives.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Active management risk The fund is subject to the risk that the investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. If the securities selected and strategies employed by the fund fail to produce the intended results, the fund could underperform other funds with similar objectives and investment strategies.

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a company or a particular industry.

Summary

Investment style risk Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The fund’s growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than value stocks and their prices usually fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Foreign investing risk This is the risk that the fund’s investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.

Performance The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index. The fund’s past performance (before and after taxes) is not necessarily an indication of future performance.

The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.

In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

T. Rowe Price

Average Annual Total Returns
	A		Periods ended
			December 31, 2010
		Returns before taxes	1 Year		5 Years		10 Years
	Blue Chip Growth Fund
		Returns before taxes	16.42	%	3.38	%	1.41	%
		Returns after taxes on distributions	16.41		3.35		1.38
		Returns after taxes on distributions
		and sale of fund shares	10.68		2.90		1.20
	S&P 500 Index		15.06		2.29		1.41
	Lipper Large-Cap Growth Funds Index		15.13		2.38		-1.01

Updated performance information is available through troweprice.com or may be obtained by calling 1-800-225-5132.

Management

Investment Adviser T. Rowe Price Associates, Inc. (T. Rowe Price)

Portfolio Manager

Title

Managed Fund Since

Joined Investment
Adviser

Larry J. Puglia

Chairman of Investment

Advisory Committee

1993

1990

Summary

Purchase and Sale of Fund Shares

The fund’s investment minimums generally are as follows (if you hold shares through a financial intermediary, the intermediary may impose different investment minimums):

Type of Account	Minimum initial purchase	Minimum subsequent purchase
Individual retirement accounts and retirement plan accounts, Uniform Gifts to Minors Act or Uniform Transfers to Minors Act accounts, and Education Savings Accounts	$1,000	$50

All other accounts	2,500	100

You may purchase, redeem, or exchange shares of the fund on any day the New York Stock Exchange is open for business by accessing your account online at troweprice.com, by calling 1-800-225-5132, or by written request. If you hold shares through a financial intermediary, you must purchase, redeem, and exchange shares through your intermediary.

Tax Information

Any dividends or capital gains are declared and paid annually, usually in December. Distributions by the fund, whether or not you reinvest these amounts in additional fund shares, may be taxed as ordinary income or capital gains unless you invest through an individual retirement account, 401(k) plan, or other tax-deferred account. A redemption or exchange of fund shares may be taxable to you, unless you held the fund shares in a tax-deferred account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase shares of the fund through a broker-dealer or other financial intermediary, the fund and its related companies may pay the intermediary for the performance of administrative services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information on these payments.

T. Rowe Price Associates, Inc.
100 East Pratt Street
Baltimore, MD 21202

F93-045 5/1/11