Oppenheimer

Ultra Dividend Revenue ETF

Cusip

68386C401

NYSE Arca, Inc.

RDIV

Summary Prospectus        October 27, 2017

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, Statement of Additional Information, Annual Report and other information about the Fund online at https://www.oppenheimerfunds.com/investors/funds/etf. You can also get this information at no cost by calling 1.800.225.5677 or by sending an email request to: info@oppenheimerfunds.com.

The Fund’s prospectus and Statement of Additional Information (“SAI”), both dated October 27, 2017, and through page 72 of its most recent Annual Report, dated June 30, 2017, are incorporated by reference into this Summary Prospectus. You can access the Fund’s prospectus and SAI at https://www.oppenheimerfunds.com/investors/funds/etf. The Fund’s prospectus is also available from financial intermediaries who are authorized to sell Fund shares.

Investment Objective. Oppenheimer Ultra Dividend Revenue ETF (the “Fund”) seeks to provide investment results that correspond generally, before fees and expenses, to the performance of the OFI Revenue Weighted Ultra Dividend Index™ (the “Underlying Index”).

Fees and Expenses. The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund (“Shares”). You may also incur customary brokerage charges when buying or selling Fund Shares.

Annual Fund Operating Expenses¹

(expenses that you pay each year as a percentage of the value of your investment)

Management Fees	0.39%
Other Expenses	0.00%
Total Annual Fund Operating Expenses	0.39%

1. Expenses have been restated to reflect current fees.

Example. The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of the Shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same. This example does not include the brokerage commission that you may pay to buy and sell exchange-traded Shares of the Fund. 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
Oppenheimer Ultra Dividend Revenue ETF	$40	$125	$219	$493

Portfolio Turnover. The Fund pays transaction costs, such as commissions, when it buys and sells securities or other instruments. A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when 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 80.57% of the average value of its portfolio.

Principal Investment Strategies. The Fund seeks investment results that correspond generally, before fees and expenses, to the performance of the Underlying Index. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in the securities of companies included in the Underlying Index, and generally expects to be substantially invested at such times, with at least 95% of its net assets invested in these securities. The Fund may invest in medium capitalization companies. The Fund may invest up to 20% of its assets in certain index futures, options, options on index futures, swap contracts or other derivatives, as related to its Underlying Index and

its component securities, other securities not included in the Underlying Index and cash and cash equivalents, including shares of money market funds advised by the investment adviser or its affiliates, to the extent the investment adviser believes such investments will help the Fund track the Underlying Index.

The Underlying Index is constructed using a rules-based methodology to select the top sixty securities from the S&P 900® Index (the “Parent Index”) by dividend yields and then re-weights those securities according to the revenue earned by the companies, subject to a maximum 5% per company weighting. The Underlying Index is reconstituted and rebalanced quarterly according to dividend yields and revenue weightings. The Underlying Index thus contains a subset of the securities in the Parent Index, in different proportions. The Underlying Index is expected to contain between 55 and 65 securities, but this number may change.

The Fund will concentrate its investments in a particular industry or group of industries, such as the utilities industry, to approximately the same extent that its Underlying Index is concentrated, meaning that it will invest more than 25% of its net assets in that industry or group of industries. Utilities companies are companies that provide electricity, natural gas, water, and communications services to the public and companies that provide services to public utilities companies.

The Fund’s intention is to replicate the constituent securities of the Underlying Index as closely as possible, and the investment adviser uses a “passive” or indexing approach to try to achieve the Fund’s investment objective. When a replication strategy could have adverse consequences to Fund shareholders, however, the Fund may utilize a “representative sampling” strategy whereby the Fund would hold a significant number of the component securities of the Underlying Index, but may not track that index with the same degree of accuracy as would an investment vehicle replicating the entire index.

The Fund does not try to outperform the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.

The Underlying Index is sponsored by S&P Dow Jones Indices (the 'Index Provider“), which is unaffiliated with the Fund and the investment adviser. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. Since the Manager owns the Underlying Index, it may be deemed a creator and sponsor of the Underlying Index.

The Fund is non-diversified and therefore may invest a greater percentage of its assets in a particular issuer than a diversified Fund.

The Fund may lend securities representing up to one-third of the value of the Fund’s total assets (including the value of any collateral received).

Principal Risks. Like all investments, investing in the Fund entails risks, including the risk that you may lose part or all of the money you invest.

Investment Approach Risk. The Underlying Index, and thus the Fund, seeks to provide exposure to investments based on a specific selection criteria and a revenue weighting approach. There can be no assurance that the selection criteria and weighting approach will enhance the Fund’s performance over time. It is expected that exposure to such investment criteria and weighting will detract from performance in some market environments, perhaps for extended periods. In such circumstances, the Fund’s investment adviser will not adjust the Fund’s investment process to target different criteria or weighting processes.

Stock Market Risk. Stock market risk is the risk that broad movements in financial markets will adversely affect the price of the Fund’s investments, regardless of how well the companies in which the Fund invests perform. There is also a risk that the price of one or more of the securities or other instruments in the Fund’s portfolio will fall.

Concentration Risk. The Fund will typically concentrate in industries or groups of industries to approximately the same extent as its Underlying Index. The Fund may be adversely affected by the performance of the securities in a particular industry or group of industries and may be subject to increased price volatility and may be more susceptible to adverse economic, market, political or regulatory occurrences affecting that market, industry, group of industries, sector or asset class than may be the case for a fund that was not concentrated in a particular industry or group of industries.

Utilities Industry Risk The utilities industry is subject to significant government regulation and oversight. Companies in the utilities industry may be adversely affected due to increases in fuel and operating costs, rising costs of financing capital construction and the cost of complying with regulations, among other factors.

Dividend-Paying Stock Risk The Fund’s emphasis on dividend-paying stocks involves the risk that such stocks may fall out of favor with investors and underperform the market. Also, a company may reduce or eliminate its dividend.

Market Trading Risk. An investment in the Shares may present secondary market trading risks, including the inability to sell your Shares in the event of a severe market disruption, or the inability to buy and sell Shares at a price that reflects the actual value of the Fund’s portfolio. Although it is expected that Shares will remain listed for trading on Bats BZX Exchange, Inc. (“Bats Exchange,” and along with NYSE Arca, Inc., each the “Exchange”), disruptions to creations and redemptions, the existence of market volatility or lack of an active trading market for the Shares (including through a trading halt), as well as other factors, may result in the Shares trading significantly above (at a premium to) or below (at a discount to) the Fund’s net asset value (“NAV”) (calculated at the end of the day), or the intraday value of the Fund’s published basket of portfolio securities (i.e., the “intraday indicative value” or “IIV”). During such periods, you may be unable to sell your Shares or may

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incur significant losses if you sell your Shares. In addition, during such periods, such as a “flash crash,” different investment strategies or techniques, such as stop loss orders to sell your Shares, may not work as intended and may result in significant losses.

Non-Correlation Risk. The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs a number of operating expenses, while the Underlying Index does not. Tracking error may also occur because of differences between the securities or other instruments held in the Fund’s portfolio and those included in the Underlying Index, pricing differences, transaction costs, the Fund’s holding of uninvested cash, differences in the timing of the accrual of dividends or interest, tax gains or losses, changes to the Underlying Index, or the need to meet various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions.

Medium Capitalization Stock Risk Medium capitalization companies (including those trading as ADRs, GDRs, EDRs and Global Shares) may have an unproven or narrow technological base and limited product lines, distribution channels, markets and financial resources. Medium capitalization companies also may be dependent on entrepreneurial management, making the companies more susceptible to certain setbacks and reversals. Securities of medium capitalization companies may also be more sensitive to changes in the economy, such as changes in the level of interest rates. As a result, the securities of medium capitalization companies may be subject to more abrupt or erratic price movements than securities of larger companies, may have limited marketability, and may be less liquid than securities of companies with larger capitalizations.

Increased Volatility Risk. Increased volatility may result from increased cash flows to the Fund and other market participants that continuously or systematically buy large holdings of small and medium capitalization companies (including those trading as ADRs, GDRs, EDRs and Global Shares), which can drive prices up and down more dramatically. Additionally, the announcement that a security has been added to a widely followed index or benchmark may cause the price of that security to increase. Conversely, the announcement that a security has been deleted from a widely followed index or benchmark may cause the price of that security to decrease.

Non-Diversification Risk The Fund is non-diversified and, as a result, may have greater volatility than other diversified funds. Because a non-diversified fund may invest a larger percentage of its assets in securities of a single company than diversified funds, the performance of that company can have a substantial impact on Share price.

Calculation Methodology Risk The Underlying Index relies on various sources of information to assess the criteria of issuers included in the Underlying Index (or its Parent Index), including information that may be based on assumptions and estimates. Neither the Fund nor the investment adviser can offer assurances that the Underlying Index’s calculation methodology or sources of information will provide an accurate assessment of included issuers.

Operational Risk The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the investment adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

Passive Investment Risk. The Fund is not actively managed and therefore the investment adviser does not have discretion to select an Underlying Index’s components or change an Underlying Index methodology. The Fund generally does not attempt to take defensive positions under any market conditions, including declining markets. A general decline in the market segments included in the Underlying Index may adversely affect the Fund’s performance.

Securities Lending Risk Securities lending involves the risk that the Fund may lose money because the borrower of the Fund’s loaned securities fails to return the securities in a timely manner or at all and the securities lending agent fails to fulfill its guarantee to the Fund against that risk. The Fund could also lose money in the event of a decline in the value of the collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. The Fund’s securities lending activities could also trigger adverse tax consequences for the Fund and affect the amount, timing and character of distributions to the shareholders.

Portfolio Turnover Risk. Because the Fund is rebalanced and reconstituted quarterly, the Fund may experience portfolio turnover in excess of 100%. Portfolio turnover may involve the payment by the Fund of brokerage and other transaction costs on the sale of securities, as well as on the investment of the proceeds in other securities. The greater the portfolio turnover, the greater the transaction costs to the Fund, which could have an adverse effect on the Fund’s total rate of return, and the more likely the Fund is to generate capital gains that must be distributed to shareholders as taxable income.

Consumer Discretionary Sector Risk The success of consumer product manufacturers and retailers is tied closely to the performance of the domestic and international economy, employment, wage growth, monetary policy impacting interest rates, competition and consumer confidence. Success depends heavily on disposable income and consumer spending habits. Also, companies in the consumer discretionary sector may be subject to fierce competition, exacerbated by the shift toward online shopping. Changes in demographics and consumer tastes can also affect the demand for, and success of, consumer products and services in the marketplace.

Energy Sector Risk The Energy sector consists of companies engaged in the exploration, extraction and refining of coal, oil and natural gas. The energy sector of an economy is cyclical and highly dependent on energy prices. Companies in the energy sector are impacted by the levels and volatility of global energy prices, energy supply and demand, capital expenditures on exploration and production of energy sources, energy conservation efforts, exchange rates, interest rates,

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economic conditions, tax treatment, increased competition and technological advances, among other factors. Companies in this sector may be subject to substantial government regulation and governmental budget constraints. Energy companies can be affected by accidents, environmental problems, terrorism, political events and natural disasters. Energy companies may also operate in, or engage in transactions involving countries with less developed regulatory regimes or a history of expropriation, nationalization or other adverse policies. Energy companies can be significantly affected by the supply of, and demand for, specific products (e.g., oil and natural gas) and services, exploration and production spending, government subsidization, world events and general economic conditions. Energy companies may have relatively high levels of debt, and therefore may be more likely than other companies to restructure their businesses during market downturns.

Telecommunications Sector Risk The telecommunications sector includes mobile phone companies, internet service providers, cable and satellite companies. Companies in this sector are subject to extensive government regulation, and costs of complying with governmental regulations, delays or failure to receive required regulatory approvals, or the enactment of new regulatory requirements may negatively affect the business of telecommunications companies. Government actions worldwide, specifically in the area of pre-marketing clearance of products and prices, can be unpredictable. Companies in the telecommunications sector may carry a heavy debt load as a result of distressed cash flows due to the need to commit substantial capital to meet increasing competition, particularly in developing new products and services using new technology. Technological innovations may make the products and services of certain telecommunications companies obsolete. Companies in this sector may be particular targets of hacking and potential theft of proprietary or consumer information or disruptions in service, which could have a material adverse effect on their businesses.

Authorized Participant Concentration Risk. Only an authorized participant may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of intermediaries that act as authorized participants and none of these authorized participants is or will be obligated to engage in creation or redemption transactions. To the extent that these intermediaries exit the business or are unable to or choose not to proceed with creation and/or redemption orders with respect to the Fund and no other authorized participant is able to step forward to create or redeem Shares may trade at a discount to NAV or IIV, and the Fund may possibly face delisting.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

The Fund’s Past Performance. The performance information that follows shows the Fund’s performance information in a bar chart and an average annual total returns table. The information provides some indication of the risks of investing in the Fund by comparing the Fund’s performance with a broad measure of market performance and the index the Fund seeks to track. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance for the Fund is available at https://www.oppenheimerfunds.com.

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. In addition, the after-tax returns shown are not relevant to investors who hold Shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Sales charges and taxes are not included and the returns would be lower if they were. During the periods shown in the bar chart above, the Fund’s highest quarterly return was 9.69% (quarter ended December 31, 2014) and the Fund’s lowest quarterly return was -2.69% (quarter ended September 30, 2015).

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Year-to-date return (through September 30, 2017): 4.04%

Average Annual Total Returns for the periods ended December 31, 2016

	1 Year	5 Years (or life of class, if less)	10 Years (or life of class, if less)
(inception 9/30/13)
Return Before Taxes	28.45%	14.51%	N/A
Return After Taxes on Distributions	26.61%	12.69%	N/A
Return After Taxes on Distributions and Sale of Fund Shares	16.03%	10.44%	N/A
S&P 900® Index	18.53%	12.84%	N/A
(reflects no deduction for fees, expenses or taxes)
OFI Revenue Weighted Ultra Dividend Index™	29.75%	13.62%	N/A
(reflects no deduction for fees, expenses or taxes)

Investment Adviser. OFI Advisors, LLC (the “Manager”) is the Fund’s investment adviser.

Portfolio Managers. Frank Vallario has been Vice President of the Fund since October 2017 and portfolio manager of the Fund since August 2017. Sean P. Reichert has been Vice President and portfolio manager of the Fund since its inception.

Purchase and Sale of Fund Shares Unlike conventional mutual funds, the Fund issues and redeems Shares on a continuous basis, at NAV, only in Creation Units consisting of 50,000 Shares. The Fund generally will issue or redeem Creation Units in return for a designated portfolio of securities (and an amount of cash) that the Fund specifies each day. Individual Shares may only be purchased and sold on the Exchange through a broker-dealer. Shares will trade at market prices rather than at NAV or IIV. As such, Shares may trade at a price greater than NAV or IIV (premium) or less than NAV or IIV (discount).

Taxes. The Fund’s distributions generally are taxable to you as ordinary income, capital gains, or some combination of both, unless you are investing through a tax-deferred arrangement, in which case your distributions generally will be taxed when withdrawn from the tax-deferred account.

Payments to Broker-Dealers and Other Financial Intermediaries. If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), OppenheimerFunds Distributor, Inc. may pay the intermediary for the sale of Shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other financial intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

For More Information About Oppenheimer Ultra Dividend Revenue ETF

You can access the Fund’s prospectus and SAI at https://www.oppenheimerfunds.com/investors/funds/etf. You can also request additional information about the Fund or your account:

Telephone:	Call OppenheimerFunds Services toll-free: 1.800.CALL OPP (1.800.225.5677)
Mail:	For requests by mail: OppenheimerFunds Services P.O. Box 5270 Denver, Colorado 80217-5270	For requests by courier or express mail: OppenheimerFunds Services 12100 East Iliff Avenue Suite 300 Aurora, Colorado 80014
Internet:	You may request documents, and read or download certain documents at www.oppenheimerfunds.com

PR2475.001.1017