0000902259 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:C000005424Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:C000166329Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:C000005425Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:C000005426Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:C000225816Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member rr:RiskLoseMoneyMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:StockinvestingMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:MarketconditionsMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:GrowthinvestingMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Large-andmid-capstocksMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Dividend-payingstocksMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:SectorexposureMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:InformationtechnologysectorMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:ActivemanagementMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member rr:RiskNondiversifiedStatusMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:CybersecuritybreachesMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member rr:AfterTaxesOnDistributionsMember cik0000902259:C000005424Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member rr:AfterTaxesOnDistributionsAndSalesMember cik0000902259:C000005424Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell3000IndexMember 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell3000Index1Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell3000Index2Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell3000Index3Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell1000GrowthIndex4Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell1000GrowthIndex5Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:Russell1000GrowthIndex6Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:SP500Index7Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:SP500Index8Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:SP500Index9Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:LipperLarge-CapGrowthFundsIndex10Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:LipperLarge-CapGrowthFundsIndex11Member 2024-12-31 2024-12-31 0000902259 cik0000902259:S000002069Member cik0000902259:LipperLarge-CapGrowthFundsIndex12Member 2024-12-31 2024-12-31 iso4217:USD pure utr:Y T. Rowe Price Blue Chip Growth Fund, Inc. 2025-03-01 Blue Chip Growth Fund Investment Objective(s) 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, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below. Shareholder fees (fees paid directly from your investment) 20 0 0 0 0 Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) 0.0055 0.0055 0.0055 0.0055 0.0055 0 0 0.0025 0.0050 0 0.0014 0.0002 0.0015 0.0016 0 0.0069 0.0057 0.0095 0.0121 0.0055 0 0 0 0 -0.0055 0.0069 0.0057 0.0095 0.0121 0.0000 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, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. The example also assumes that any current expense limitation arrangement remains in place for the period noted in the previous table; therefore, the figures have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 70 221 384 859 58 183 318 714 97 303 525 1166 123 384 665 1466 0 0 0 0 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 the fund’s 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 15.7% of the average value of its portfolio. Portfolio Turnover 0.157 Principal Investment Strategies The fund normally invests at least 80% of its net assets (plus any borrowings for investment purposes) in securities of blue chip companies with growth characteristics. For purposes of the fund’s 80% investment policy, the fund considers a company to be a blue chip company if the company’s securities are represented in the S&P 500 Index and the fund considers a company to have growth characteristics if the company’s securities are represented in an appropriate third-party growth-oriented index. Any derivatives that provide exposure to the investment focus suggested by the fund’s name, or to one or more market risk factors associated with the investment focus suggested by the fund’s name, are counted (as applicable) toward compliance with the fund’s 80% investment policy. Blue chip growth companies are firms that, in the investment adviser’s view, are well established in their industries and have the potential for above-average earnings growth. The fund focuses on companies with leading market positions, seasoned management, and strong financial fundamentals. The fund’s investment approach reflects the belief that solid company fundamentals (with emphasis on the potential for above-average growth) combined with a positive industry outlook may result in a higher stock price. Some of the companies the adviser targets for the fund should have good prospects for dividend growth.The fund primarily invests in U.S. common stocks. At times, the fund may have a significant portion of its assets invested in the same economic sector, such as the information technology sector. The fund is nondiversified, which means it may invest a greater percentage of its assets in a particular issuer than is permissible for a diversified fund. Principal Risks The fund’s share price fluctuates, which means you could lose money by investing in the fund. 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 and falling prices. The value of stocks held by the fund may decline due to general weakness or volatility in the stock markets in which the fund invests or because of factors that affect a particular company or industry. Market conditions: The value of the fund’s investments may decrease, sometimes rapidly or unexpectedly, due to factors affecting an issuer held by the fund, particular industries, or the overall securities markets. A variety of factors can increase the volatility of the fund’s holdings and markets generally, including economic, political, or regulatory developments, recessions, inflation, rapid interest rate changes, war, military conflict, acts of terrorism, natural disasters, and outbreaks of infectious illnesses or other widespread public health issues (such as the coronavirus pandemic) and related governmental and public responses (including sanctions). Certain events may cause instability across global markets, including reduced liquidity and disruptions in trading markets, while some events may affect certain geographic regions, countries, sectors, and industries more significantly than others. Government intervention in markets may impact interest rates, market volatility, and security pricing. These adverse developments may cause broad declines in market value due to short-term market movements or for significantly longer periods during more prolonged market downturns. Growth investing: 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 certain other types of stocks and their prices may 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. Large- and mid-cap stocks: Securities issued by large- and mid-cap companies tend to be less volatile than securities issued by small-cap companies. However, large-cap companies may not be able to attain the high growth rates of successful small-cap companies, especially during strong economic periods, and may be unable to respond as quickly to competitive challenges. The fund’s share price could fluctuate more than the share price of a fund that invests only in large-cap companies as stocks of mid-cap companies entail greater risk and are usually more volatile than stocks of large-cap companies. Dividend-paying stocks: The fund’s emphasis on dividend-paying stocks could cause the fund to underperform similar funds that invest without consideration of a company’s track record of paying dividends. Stocks of companies with a history of paying dividends may not participate in a broad market advance to the same degree as most other stocks, and a sharp rise in interest rates or economic downturn could cause a company to unexpectedly reduce or eliminate its dividend. Sector exposure: Issuers in the same economic sector may be similarly affected by economic or market events, making the fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. Information technology sector: Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on their profit margins. Like other technology companies, information technology companies may have limited product lines, markets, financial resources, or personnel. Active management: The fund’s overall investment program and holdings selected by the fund’s investment adviser may underperform the broad markets, relevant indices, or other funds with similar objectives and investment strategies. Nondiversification: As a nondiversified fund, the fund has the ability to invest a larger percentage of its assets in the securities of a smaller number of issuers than a diversified fund. As a result, poor performance by a single issuer could adversely affect fund performance more than if the fund were invested in a larger number of issuers. The fund’s share price can be expected to fluctuate more than that of a similar fund that is more broadly diversified. Cybersecurity breaches: The fund could be harmed by intentional cyberattacks and other cybersecurity breaches, including unauthorized access to the fund’s assets, confidential information, or other proprietary information. In addition, a cybersecurity breach could cause one of the fund’s service providers or financial intermediaries to suffer unauthorized data access, data corruption, or loss of operational functionality. Performance The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results. The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses. The following performance information provides some indication of the risks of investing in the fund. The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses. The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the table may also include one or more indexes that more closely aligns to the fund’s investment strategy (Strategy Benchmark(s)). The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results. Calendar Year Returns <table cellpadding="0" cellspacing="0" style="border-collapse:collapse" width="100%"><tr style="font-size:1pt;"><td style="width:9.02%;"> </td><td style="width:14.01%;"> </td><td style="width:14.99%;"> </td><td style="width:13%;"> </td><td style="width:.49%;"> </td><td style="width:14.99%;"> </td><td style="width:14.99%;"> </td><td style="width:13%;"> </td><td style="width:5.5%;"> </td></tr><tr><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top;">Quarter Ended</td><td style="vertical-align:top;">TotalReturn</td><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top;">Quarter Ended</td><td style="vertical-align:top;">Total Return</td><td style="vertical-align:top; font-size:1pt;"> </td></tr><tr><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top; background-color:#E6E6E6;">Best Quarter</td><td style="vertical-align:top; background-color:#E6E6E6;">6/30/20</td><td style="vertical-align:top; background-color:#E6E6E6;">27.81%</td><td style="vertical-align:top; font-size:1pt;"> </td><td style="vertical-align:top; background-color:#E6E6E6;">Worst Quarter</td><td style="vertical-align:top; background-color:#E6E6E6;">6/30/22</td><td style="vertical-align:top; background-color:#E6E6E6;">-25.01%</td><td style="vertical-align:top; font-size:1pt;"> </td></tr></table> Best Quarter 2020-06-30 0.2781 Worst Quarter 2022-06-30 -0.2501 The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the table may also include one or more indexes that more closely aligns to the fund’s investment strategy (Strategy Benchmark(s)).In addition, the table shows hypothetical after-tax returns to demonstrate 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 an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes. 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 an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes. Average Annual Total Returns Periods ended December 31, 2024 1993-06-30 0.3563 0.1455 0.1489 0.3303 0.1310 0.1391 0.2308 0.1148 0.1237 2015-12-17 0.3579 0.1470 0.1539 2000-03-31 0.3527 0.1425 0.1459 2002-09-30 0.3492 0.1396 0.1429 2021-02-22 0.3657 0.1037 Russell 3000® Index Russell 3000® Index (reflects no deduction for fees, expenses, or taxes) 0.1394 0.2381 0.1386 0.1255 0.1135 Russell 1000® Growth Index (reflects no deduction for fees, expenses, or taxes) 0.1800 0.3336 0.1896 0.1678 0.1464 S&P 500 Index (reflects no deduction for fees, expenses, or taxes) 0.1444 0.2502 0.1453 0.1310 0.1313 Lipper Large-Cap Growth Funds Index 0.1582 0.3073 0.1644 0.1482 0.1104 Updated performance information is available through troweprice.com. troweprice.com 485BPOS 2024-12-31 0000902259 false 2025-02-25 2025-03-01 N-1A ~ http://troweprice.com/20241231/role/RRSchedule4 ~ ~ http://troweprice.com/20241231/role/RRSchedule5 ~ ~ http://troweprice.com/20241231/role/RRSchedule6 ~ ~ http://troweprice.com/20241231/role/RRBarChart7 ~ ~ http://troweprice.com/20241231/role/RRSchedule8 ~ 0.1115 0.0098 0.3655 0.0201 0.2997 0.3473 0.177 -0.386 0.4936 0.3563 ~ http://troweprice.com/20241231/role/RRSchedule9 ~ Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee. T. Rowe Price Associates, Inc., has contractually agreed to waive and/or bear all the Z Class’ expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) in their entirety. T. Rowe Price Associates, Inc., expects this fee waiver and/or expense reimbursement arrangement to remain in place indefinitely, and the agreement may only be amended or terminated with approval by the fund’s Board of Directors. Due to new SEC Rules on shareholder reporting, the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Return since 12/17/15. Return since 2/22/21.