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, 2010, and Statement of Additional Information, dated May 1, 2010.

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	$10a
Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Management fee	0.61%
Distribution and service (12b-1) fees	0.00%
Other expenses	0.20%
Total annual fund operating expenses	0.81%

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
$83	$259	$450	$1,002

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 60.0% of the average value of its portfolio.

Principal Investment Strategies The fund will normally invest at least 80% of its net assets 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 be invested in U.S. common stocks, the fund may invest in other securities, including foreign stocks, and use futures and options in keeping with the fund`s objectives.

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 the 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.

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.

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 (IRA).

Average Annual Total Returns

	Periods ended December 31, 2009
	1 year	5 years	10 years
Blue Chip Growth Fund
Returns before taxes	42.57%	1.45%	-0.38%
Returns after taxes on distributions	42.55	1.41	-0.50
Returns after taxes on distributions and sale of fund shares	27.70	1.24	-0.34
S&P 500 Index	26.46	0.42	-0.95
Lipper Large-Cap Growth Funds Index	38.50	1.01	-4.51

Portfolio Manager Larry J. Puglia is Chairman of the fund`s Investment Advisory Committee. Mr. Puglia has been chairman of the committee since the fund`s inception in 1996 and he joined T. Rowe Price in 1990.

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

Type of Account	Minimum initial purchase	Minimum subsequent purchase
IRAs and retirement plan accounts, Uniform Gifts to Minors Act or Uniform Transfers to Minors Act (UGMA/UTMA) accounts, and Education Savings Accounts (ESAs)	$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.

Any dividends or capital gains are declared and paid annually, usually in December. Fund distributions may be taxed as ordinary income or capital gains, unless you invest through an IRA, 401(k) plan, or other tax-deferred account.

If you purchase 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 Web site for more information on these payments.