SUMMARY
PROSPECTUS

RPIGX

March 1, 2018

T. Rowe Price

Institutional Global Growth Equity Fund

A fund seeking long-term growth of capital primarily through investments in common stocks of large-cap companies throughout the world, including the U.S.

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/prospectus. You can also get this information at no cost by calling
1-800-638-8790, by sending an e-mail request to info@troweprice.com, or by contacting your financial intermediary. This Summary Prospectus incorporates by reference the fund’s prospectus, dated March 1, 2018, as amended or supplemented, and Statement of Additional Information, dated March 1, 2018, as amended or supplemented.

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 1

Investment Objective

The fund seeks long-term growth of capital through investments primarily in the common stocks of large-cap companies throughout the world, including the U.S.

Fees and Expenses

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

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)
Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)	2.00	%
Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Management fees	0.65	%
Other expenses	0.09
Total annual fund operating expenses	0.74
Fee waiver/expense reimbursement	0.01	a
Total annual fund operating expenses after fee waiver/expense reimbursement	0.75	a

aT. Rowe Price Associates, Inc., has agreed (through February 28, 2019) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the fund’s ratio of expenses to average daily net assets to exceed 0.75%. The agreement may be terminated at any time beyond February 28, 2019, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement (and a previous limitation of 0.75%) are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the fund’s expense ratio is below 0.75%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the fund’s expense ratio (after the repayment is taken into account) to exceed both: (1) the expense limitation in place at the time such amounts were waived; and (2) the fund’s current expense limitation.

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 an expense limitation arrangement currently in place is not renewed; 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:

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1 year	3 years	5 years	10 years
$77	$239	$413	$920

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 84.0% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies The fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in stocks of large-cap companies. Under normal conditions, the fund will invest in at least five countries, one of which will be the U.S., and at least 40% of its net assets will be invested in stocks of large-cap companies outside the U.S., including companies in emerging markets (at least 30% if foreign market conditions are not favorable).

The fund defines a large-cap company as one whose market capitalization (number of shares outstanding multiplied by share price) falls within or above the applicable range for companies included in the MSCI All Country World Large Cap Index. The fund’s and MSCI Inc.’s definition of a large-cap company depends on whether the company is located in a developed market or an emerging market. As of December 31, 2017, the Index’s market capitalization range for large-cap companies in developed markets was approximately $7 billion to $861 billion, and the market capitalization range for large-cap companies in emerging markets was approximately $1 billion to $493 billion. The fund also relies on MSCI Inc. to classify a particular country as developed or emerging. The market capitalization of the companies in the fund’s portfolio and the Index changes over time; the fund will not automatically sell or cease to purchase additional stock of a company it already owns just because the company’s market capitalization falls below the range of the Index.

While the adviser invests with an awareness of the global economic backdrop and the adviser’s outlook for certain industries, sectors, and individual countries, the adviser’s decision-making process focuses on bottom-up stock selection. Country allocation is driven largely by stock selection, though the adviser may limit investments in markets or industries that appear to have poor overall prospects.

Security selection reflects a growth style. The adviser relies on a global team of investment analysts dedicated to in-depth fundamental research in an effort to identify companies capable of achieving and sustaining above-average, long-term earnings growth. The adviser seeks to purchase stocks of companies at reasonable prices in relation to present or anticipated earnings, cash flow, or book value.

Summary 3

In selecting investments, the adviser generally favors companies with one or more of the following characteristics:

·leading or improving market position;

·attractive business niche;

·attractive or improving franchise or industry position;

·seasoned management;

·stable or improving earnings and/or cash flow; and

·sound or improving balance sheet.

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 risks The investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies if the fund’s overall investment selections or strategies fail to produce the intended results.

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 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 particular company or industry.

International investing risks Investing in the securities of non-U.S. issuers involves special risks not typically associated with investing in U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markets, and the imposition of local taxes and restrictions on gaining access to sales proceeds for foreign investors.

Investment style risks 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 certain other

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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.

Market capitalization risks Although stocks issued by larger companies tend to have less overall volatility than stocks issued by smaller companies, larger companies may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods. In addition, larger companies may be less capable of responding quickly to competitive challenges and industry changes, and may suffer sharper price declines as a result of earnings disappointments.

Portfolio turnover risks The fund may actively and frequently trade its portfolio securities or other instruments to carry out its investment strategies. High portfolio turnover may adversely affect the fund’s performance and increase transaction costs, which could increase the fund’s expenses. High portfolio turnover may also result in the distribution of higher capital gains when compared to a fund with less active trading policies, which could have an adverse tax impact if the fund’s shares are held in a taxable account.

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.

Summary 5

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

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.

Average Annual Total Returns
			Periods ended
			December 31, 2017
								Since		Inception
			1 Year			5 Years		inception		date
	Institutional Global Growth Equity Fund									10/27/2008
		Returns before taxes	34.62	%		12.92	%	16.89	%
		Returns after taxes on distributions	32.41			11.53		15.43
		Returns after taxes on distributions
		and sale of fund shares	20.28			9.82		13.67
	MSCI All Country World Index (reflects no deduction for fees, expenses, or taxes)
			24.62		11.40			13.54	a
	Lipper Global Multi-Cap Growth Funds Average
			28.66		11.75			12.13	b

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aReturn as of 10/27/08.

bReturn as of 10/31/08.

Updated performance information is available through troweprice.com.

Management

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

Investment Sub-adviser T. Rowe Price International Ltd (T. Rowe Price International)

Portfolio Manager	Title	Managed Fund Since	Joined Investment Adviser
R. Scott Berg	Chairman of Investment Advisory Committee	2008	2002

Purchase and Sale of Fund Shares

The fund generally requires a $1,000,000 minimum initial investment and there is no minimum for additional purchases, although the initial investment minimum may be waived for certain types of accounts held through a retirement plan, financial advisor, or other financial intermediary.

For investors holding shares of the fund directly with T. Rowe Price, you may purchase, redeem, or exchange fund shares by mail or by telephone
(1-800-638-8790).

If you hold shares through a financial intermediary or retirement plan, you must purchase, redeem, and exchange shares of the fund through your intermediary or retirement plan. You should check with your intermediary or retirement plan to determine the investment minimums that apply to your account.

Tax Information

Any dividends or capital gains are declared and paid annually, usually in December. Redemptions or exchanges of fund shares and 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 a tax-deferred account (in which case you will be taxed upon withdrawal from such account).

T. Rowe Price Associates, Inc.
100 East Pratt Street
Baltimore, MD 21202 E172-045 3/1/18