American Funds Developing World Growth and Income FundSM Summary prospectus February 1, 2020 (as supplemented June 30, 2020)

Beginning January 1, 2021, as permitted by regulations adopted by the U.S. Securities and Exchange Commission, we intend to no longer mail paper copies of the fund’s shareholder reports, unless specifically requested from American Funds or your financial intermediary, such as a broker-dealer or bank. Instead, the reports will be made available on the Capital Group website (capitalgroup.com); you will be notified by mail and provided with a website link to access the report each time a report is posted. If you have already elected to receive shareholder reports electronically, you will not be affected by this change and do not need to take any action. If you prefer to receive shareholder reports and other communications electronically, you may update your mailing preferences with your financial intermediary, or enroll in e-delivery at capitalgroup.com (for accounts held directly with the fund).

You may elect to receive paper copies of all future reports free of charge. If you invest through a financial intermediary, you may contact your financial intermediary to request that you continue to receive paper copies of your shareholder reports. If you invest directly with the fund, you may inform American Funds that you wish to continue receiving paper copies of your shareholder reports by contacting us at (800) 421-4225. Your election to receive paper reports will apply to all funds held with American Funds or through your financial intermediary.

Investment objective The fund’s investment objective is to provide long-term growth of capital while providing current income.

Fees and expenses of the fund This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. In addition to the fees and expenses described below, you may also be required to pay brokerage commissions on purchases and sales of Class F-2, F-3 or 529-F-1 shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in American Funds. More information about these and other discounts is available from your financial professional, in the “Sales charge reductions and waivers” sections on page 31 of the prospectus and on page 72 of the fund’s statement of additional information, and in the sales charge waiver appendix to this prospectus.

American Funds Developing World Growth and Income Fund / Summary prospectus     1

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. The example reflects the fee waiver described above through the expiration date of such waiver and total annual fund operating expenses thereafter. You may be required to pay brokerage commissions on your purchases and sales of Class F-2, F-3 or 529-F-1 shares of the fund, which are not reflected in the example. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 investment results. During the most recent fiscal year, the fund’s portfolio turnover rate was 40% of the average value of its portfolio.

2     American Funds Developing World Growth and Income Fund / Summary prospectus

Principal investment strategies Under normal market conditions, the fund will invest at least 80% of its assets in securities that are (1) issued by companies in developing countries; (2) principally traded in the securities markets of developing countries; (3) denominated in developing country currencies; or (4) issued by companies deemed to be suitable for investment by the fund because they have significant economic exposure to developing countries. In determining whether a country is a developing country, the fund’s investment adviser will consider, among other things, whether the country is generally considered to be a developing country by the international financial community, the country’s per capita gross domestic product, the percentage of the country’s economy that is industrialized, market capital as a percentage of the country’s gross domestic product, and the overall regulatory environment of the country, including the presence of government regulation limiting or banning foreign ownership and restrictions on repatriation of initial capital, dividends, interest and/or capital gains. For example, the investment adviser currently expects that most countries included in any one of the Morgan Stanley Capital Index (MSCI) emerging markets indices will be treated as developing countries.

The fund may invest in securities of any company, regardless of where it is domiciled, if the fund’s investment adviser determines that the company has significant economic exposure to a developing country. An issuer will be deemed to have significant economic exposure to a developing country if at least 50% of its assets are located in a developing country or at least 50% of its total revenues or profits are derived, or, in the opinion of the investment adviser, are expected to be derived, from goods or services produced or sold in a developing country.

The fund may have significant exposure to one or more developing countries. For example, as of December 31, 2019, the fund held more than 25% of its assets in securities of issuers domiciled in China. See the paragraphs captioned “Investing outside the United States,” “Investing in emerging markets” and “Exposure to country, region, industry or sector” under “Principal risks” below for a description of the risks associated with such investments.  More current portfolio holdings information for the fund is available on our website at capitalgroup.com.

The fund is designed for investors seeking both capital appreciation and income. As a general matter, the fund may invest in a broad range of securities, including both growth- and income-oriented stocks and debt securities. In pursuing its objective, however, the fund focuses on stocks of companies that have the potential for growth and the capacity to pay dividends. The investment adviser believes that these stocks will be more resistant to market declines than stocks of companies that do not, or do not have the capacity to, pay dividends. The fund may also invest in securities of foreign issuers in the form of depositary receipts or other instruments by which the fund may obtain exposure to equity investments in local markets.

The investment adviser uses a system of multiple portfolio managers in managing the fund’s assets. Under this approach, the portfolio of the fund is divided into segments managed by individual managers.

The fund relies on the professional judgment of its investment adviser to make decisions about the fund’s portfolio investments. The basic investment philosophy of the investment adviser is to seek to invest in attractively valued companies that, in its opinion, represent good, long-term investment opportunities. Securities may be sold

American Funds Developing World Growth and Income Fund / Summary prospectus     3

when the investment adviser believes that they no longer represent relatively attractive investment opportunities.

Principal risks This section describes the principal risks associated with investing in the fund. You may lose money by investing in the fund. The likelihood of loss may be greater if you invest for a shorter period of time. Investors in the fund should have a long-term perspective and be able to tolerate potentially sharp declines in value.

Market conditions — The prices of, and the income generated by, the common stocks and other securities held by the fund may decline – sometimes rapidly or unpredictably – due to various factors, including events or conditions affecting the general economy or particular industries; overall market changes; local, regional or global political, social or economic instability; governmental, governmental agency or central bank responses to economic conditions; and currency exchange rate, interest rate and commodity price fluctuations.

Economies and financial markets throughout the world are highly interconnected. Economic, financial or political events, trading and tariff arrangements, wars, terrorism, cybersecurity events, natural disasters, public health emergencies (such as the spread of infectious disease) and other circumstances in one country or region could have impacts on global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries affected, the value and liquidity of the fund’s investments may be negatively affected by developments in other countries and regions.

Issuer risks — The prices of, and the income generated by, securities held by the fund may decline in response to various factors directly related to the issuers of such securities, including reduced demand for an issuer’s goods or services, poor management performance, major litigation related to the issuer, changes in government regulations affecting the issuer or its competitive environment and strategic initiatives such as mergers, acquisitions or dispositions and the market response to any such initiatives.

Investing outside the United States — Securities of issuers domiciled outside the United States, or with significant operations or revenues outside the United States, may lose value because of adverse political, social, economic or market developments (including social instability, regional conflicts, terrorism and war) in the countries or regions in which the issuers operate or generate revenue. These securities may also lose value due to changes in foreign currency exchange rates against the U.S. dollar and/or currencies of other countries. Issuers of these securities may be more susceptible to actions of foreign governments, such as nationalization, currency blockage or the imposition of price controls or punitive taxes, each of which could adversely impact the value of these securities. Securities markets in certain countries may be more volatile and/or less liquid than those in the United States. Investments outside the United States may also be subject to different accounting practices and different regulatory, legal and reporting standards and practices, and may be more difficult to value, than those in the United States. In addition, the value of investments outside the United States may be reduced by foreign taxes, including foreign withholding taxes on interest and dividends. Further, there may be increased risks of delayed settlement of securities purchased or sold by the fund. The risks of investing outside the United States may be heightened in connection with investments in emerging markets.

4     American Funds Developing World Growth and Income Fund / Summary prospectus

Investing in emerging markets — Investing in emerging markets may involve risks in addition to and greater than those generally associated with investing in the securities markets of developed countries. For instance, emerging market countries may have less developed legal and accounting systems than those in developed countries. The governments of these countries may be less stable and more likely to impose capital controls, nationalize a company or industry, place restrictions on foreign ownership and on withdrawing sale proceeds of securities from the country, and/or impose punitive taxes that could adversely affect the prices of securities. In addition, the economies of these countries may be dependent on relatively few industries that are more susceptible to local and global changes. Securities markets in these countries can also be relatively small and have substantially lower trading volumes. As a result, securities issued in these countries may be more volatile and less liquid, and may be more difficult to value, than securities issued in countries with more developed economies and/or markets. Less certainty with respect to security valuations may lead to additional challenges and risks in calculating the fund’s net asset value. Additionally, emerging markets are more likely to experience problems with the clearing and settling of trades and the holding of securities by banks, agents and depositories that are less established than those in developed countries.

Exposure to country, region, industry or sector — Subject to the investment limitations, the fund may have significant exposure to a particular country, region, industry or sector. Such exposure may cause the fund to be more impacted by risks relating to and developments affecting the country, region, industry or sector, and thus its net asset value may be more volatile, than a fund without such levels of exposure. For example, if the fund has significant exposure in a particular country, then social, economic, regulatory or other issues that negatively affect that country may have a greater impact on the fund than on a fund that is more geographically diversified.

Investing in growth-oriented stocks — Growth-oriented common stocks and other equity-type securities (such as preferred stocks, convertible preferred stocks and convertible bonds) may involve larger price swings and greater potential for loss than other types of investments. These risks may be even greater in the case of smaller capitalization stocks.

Investing in income-oriented stocks — The value of the fund’s securities and income provided by the fund may be reduced by changes in the dividend policies of, and the capital resources available for dividend payments at, the companies in which the fund invests.

Investing in small companies — Investing in smaller companies may pose additional risks. For example, it is often more difficult to value or dispose of small company stocks and more difficult to obtain information about smaller companies than about larger companies. Furthermore, smaller companies often have limited product lines, operating histories, markets and/or financial resources, may be dependent on one or a few key persons for management, and can be more susceptible to losses. Moreover, the prices of their stocks may be more volatile than stocks of larger, more established companies, particularly during times of market turmoil.

Investing in depositary receipts — Depositary receipts are securities that evidence ownership interests in, and represent the right to receive, a security or a pool of securities that have been deposited with a bank or trust depository. Such securities may be less liquid or may trade at a lower price than the underlying securities of the issuer. Additionally, receipt or corporate information about the underlying issuer and proxy

American Funds Developing World Growth and Income Fund / Summary prospectus     5

disclosure may not be timely and there may not be a correlation between such information and the market value of the depositary receipts.

Management — The investment adviser to the fund actively manages the fund’s investments. Consequently, the fund is subject to the risk that the methods and analyses, including models, tools and data, employed by the investment adviser in this process may be flawed or incorrect and may not produce the desired results. This could cause the fund to lose value or its investment results to lag relevant benchmarks or other funds with similar objectives.

Your investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, entity or person. You should consider how this fund fits into your overall investment program.

Investment results The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and other applicable measures of market results. This information provides some indication of the risks of investing in the fund. The Lipper Emerging Markets Funds Index includes funds that disclose investment objectives and/or strategies reasonably comparable to those of the fund. Past investment results (before and after taxes) are not predictive of future investment results. Updated information on the fund’s investment results can be obtained by visiting capitalgroup.com.

6     American Funds Developing World Growth and Income Fund / Summary prospectus

After-tax returns are shown only for Class A shares; after-tax returns for other share classes will vary. After-tax returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement, such as a 401(k) plan, individual retirement account (IRA) or 529 college savings plan.

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Management

Investment adviser Capital Research and Management Company^SM
Portfolio managers The individuals primarily responsible for the portfolio management of the fund are:

Purchase and sale of fund shares The minimum amount to establish an account for all share classes is normally $250 and the minimum to add to an account is $50. For a payroll deduction retirement plan account, payroll deduction savings plan account or employer-sponsored 529 account, the minimum is $25 to establish or add to an account. For accounts with Class F-3 shares held and serviced by the fund’s transfer agent, the minimum investment amount is $1 million.

If you are a retail investor, you may sell (redeem) shares on any business day through your dealer or financial advisor or by writing to American Funds Service Company® at P.O. Box 6007, Indianapolis, Indiana 46206-6007; telephoning American Funds Service Company at (800) 421-4225; faxing American Funds Service Company at (888) 421-4351; or accessing our website at capitalgroup.com. Please contact your plan administrator or recordkeeper to sell (redeem) shares from your retirement plan.

Tax information Dividends and capital gain distributions you receive from the fund are subject to federal income taxes and may also be subject to state and local taxes, unless you are tax-exempt or your account is tax-favored.

Payments to broker-dealers and other financial intermediaries If you purchase shares of the fund through a broker-dealer or other financial intermediary (such as a bank), the fund and the fund’s distributor or its affiliates may pay the intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your individual financial advisor to recommend the fund over another investment. Ask your individual financial advisor or visit your financial intermediary’s website for more information.

8     American Funds Developing World Growth and Income Fund / Summary prospectus

Notes

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You can access the fund’s statutory prospectus or SAI at capitalgroup.com/prospectus.
	MFGEIPX-100-0220P Litho in USA CGD/DFS/10303 Investment Company File No. 811-22881

Summary Prospectus Supplement June 30, 2020

For the following funds with summary prospectuses dated
August 1, 2019 – June 1, 2020 (as supplemented to date)

Changes apply to all funds unless otherwise noted.

1. The following replaces the second sentence in the first paragraph of the “Fee and expenses of the fund” section of the summary prospectus for all of the funds listed above (other than AMCAP, MSI, and EUPAC) to read as follows:

In addition to the fees and expenses described below, you may also be required to pay brokerage commissions on purchases and sales of Class F-2, F-3 or 529-F-1 shares of the fund.

2. The “Shareholder fees” table in the “Fees and expenses of the fund” section of the summary prospectus for each of the funds listed below is amended to read as follows:

3. The “Shareholder fees” table in the “Fees and expenses of the fund” section of the summary prospectus for each of the funds listed below is amended to read as follows:

4. The “Shareholder fees” table in the “Fees and expenses of the fund” section of the summary prospectus for each of the funds listed below is amended to read as follows. Except as indicated below, footnotes in the summary prospectus remain unchanged.

¹ A contingent deferred sales charge of 0.75% for Class A shares and 1.00% for Class 529-A shares applies on certain redemptions made within 18 months following purchases of $500,000 or more for Class A and $1 million or more for Class 529-A made without an initial sales charge. Contingent deferred sales charge is calculated based on the lesser of the offering price and market value of shares being sold.

5. In the third paragraph of the “Fee and expenses of the fund” section of the summary prospectus for all of the funds listed above (other than AMCAP, MSI, and EUPAC), replace the following sentence:

You may be required to pay brokerage commissions on your purchases and sales of Class F-2 or F-3 shares of the fund, which are not reflected in the example.

With:

You may be required to pay brokerage commissions on your purchases and sales of Class F-2, F-3 or 529-F-1 shares of the fund, which are not reflected in the example.

6. The table under the heading “Example” in the “Fees and expenses of the fund” section of the summary prospectus for each of the funds listed below is amended to reflect revisions as provided.

7. The following is added to the end of “Market conditions” in the “Principal risks” section of the summary prospectus for each of the funds listed above to read as follows:

Economies and financial markets throughout the world are highly interconnected. Economic, financial or political events, trading and tariff arrangements, wars, terrorism, cybersecurity events, natural disasters, public health emergencies (such as the spread of infectious disease) and other circumstances in one country or region could have impacts on global economies or markets. As a result, whether or not the fund invests in

securities of issuers located in or with significant exposure to the countries affected, the value and liquidity of the fund’s investments may be negatively affected by developments in other countries and regions.

Keep this supplement with your summary prospectus.

Lit. No. MFGEBS-411-0620P CGD/AFD/10039-S81142

THE FUND MAKES AVAILABLE A SPANISH TRANSLATION OF THE ATTACHED SUMMARY PROSPECTUS AND SUMMARY PROSPECTUS SUPPLEMENT IN CONNECTION WITH THE PUBLIC OFFERING AND SALE OF ITS SHARES. THE ATTACHED ENGLISH LANGUAGE SUMMARY PROSPECTUS AND SUMMARY PROSPECTUS SUPPLEMENT ARE A FAIR AND ACCURATE REPRESENTATION OF THE SPANISH EQUIVALENT.