Summary Prospectus

March 17, 2017

Hartford Corporate Bond ETF

Hartford Corporate Bond ETF
​	Ticker	Exchange
​	HCOR	NYSE Arca

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, including the Fund’s daily net asset value, online at www.hartfordfunds.com/​etf-prospectuses.html. You can also get this information at no cost by calling 1-415-315-6600 or request a copy of the prospectus by sending an e-mail to orders@mysummaryprospectus.com. The Fund’s prospectus and statement of additional information dated March 17, 2017, as may be amended, supplemented or restated, are incorporated by reference into this summary prospectus. The Fund’s statement of additional information may be obtained, free of charge, in the same manner as the Fund’s prospectus.

INVESTMENT OBJECTIVE. The Fund seeks to provide total return, with income as a secondary objective.

YOUR EXPENSES. The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment): None

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

Management fees	0.44	%
Distribution and service (12b-1) fees	None
Other Expenses	0.00	%
Total annual fund operating expenses	0.44	%

EXAMPLE. The examples below are intended to help you compare the cost of investing in the Fund with the cost of investing in other exchange-traded funds. Investors may pay brokerage commissions on their purchases and sales of Fund shares, which are not reflected in the examples. The examples assume that:

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Your investment has a 5% return each year

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The Fund’s operating expenses remain the same

Your actual costs may be higher or lower. Based on these assumptions, for every $10,000 invested, you would pay the following expenses if you sell all of your shares at the end of each time period indicated:

Year 1	Year 3
$45	​	$	141

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 examples, affect the Fund’s performance. Because the Fund has not yet commenced operations as of the date of this prospectus, the Fund’s portfolio turnover rate for the most recent fiscal year is not available.

PRINCIPAL INVESTMENT STRATEGY. The Fund seeks to achieve its investment objective by investing in U.S. dollar denominated, investment grade rated fixed income securities. The Fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in investment grade, fixed-income securities issued by corporate entities. Investment grade securities are securities that are rated investment grade by a nationally recognized statistical rating organization (“NRSRO”), or are considered by Wellington Management Company LLP (“Wellington Management”), the Fund’s sub-adviser, to be of equivalent credit quality. Wellington Management employs a bottom up approach to portfolio management, by identifying issuers with favorable credit fundamentals and attractive total return profiles. The Fund normally expects to invest in securities issued by one hundred or fewer different issuers at any one time. The Fund may invest in fixed income securities of any maturity. The Fund normally maintains a dollar weighted average duration equivalent to that of the Bloomberg Barclays U.S. Corporate Bond Index, plus or minus

a year. As of December 31, 2016, the duration of the Bloomberg Barclays U.S. Corporate Bond Index was 7.19 years. Duration is a measure of the sensitivity of a fixed income security’s price to changes in interest rates. The Fund’s average duration measure incorporates a bond’s yield, coupon, final maturity, and the effect of derivatives. The Fund’s industry positioning will typically be driven by Wellington Management’s bottom-up fundamental research and comprehensive risk management approach to portfolio construction and may cause the Fund’s sector weightings to meaningfully differ from benchmark weightings. Although the Fund may invest across different sectors, it has no limit on the amount it may invest in any single sector. The Fund may invest up to 20% of its assets in U.S. Treasury obligations and obligations of U.S. Government agencies or instrumentalities.

PRINCIPAL RISKS. The principal risks of investing in the Fund are described below. When you sell your shares they may be worth more or less than what you paid for them, which means that you could lose money as a result of your investment. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. As with any fund, there is no guarantee that the Fund will achieve its investment objective. For more information regarding risks and investment matters please see “Additional Information Regarding Investment Strategies and Risks” in the Fund’s statutory prospectus.

Market Risk – Market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Securities may decline in value due to the activities and financial prospects of individual companies or to general market and economic movements and trends, including adverse changes to credit markets.

Interest Rate Risk – The risk that your investment may go down in value when interest rates rise, because when interest rates rise, the prices of bonds and fixed rate loans fall. A wide variety of factors can cause interest rates to rise, including central bank monetary policies and inflation rates. Generally, the longer the maturity of a bond or fixed rate loan, the more sensitive it is to this risk. Falling interest rates also create the potential for a decline in the Fund’s income. These risks are greater during periods of rising inflation. Volatility in interest rates and in fixed income markets may increase the risk that the Fund’s investment in fixed income securities will go down in value. Risks associated with rising interest rates are currently heightened because interest rates in the U.S. are at, or near, historic lows.

Credit Risk – Credit risk is the risk that the issuer of a security or other instrument will not be able to make principal and interest payments when due. Changes in an issuer’s financial strength, credit rating or the market’s perception of an issuer’s creditworthiness may also affect the value of the Fund’s investment in that issuer. The degree of credit risk depends on both the financial condition of the issuer and the terms of the obligation.

U.S. Government Securities Risk – Treasury obligations may differ in their interest rates, maturities, times of issuance and other characteristics. Securities backed by the U.S. Treasury or the full faith and credit of the United States are guaranteed only as to the timely payment of interest and principal when held to maturity. Accordingly, the current market values for these securities will fluctuate with changes in interest rates. Obligations of U.S. Government agencies and authorities are supported by varying degrees of credit but generally are not backed by the full faith and credit of the U.S. Government. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so. In addition, the value of U.S. Government securities may be affected by changes in the credit rating of the U.S. Government. U.S. Government securities are also subject to the risk that the U.S. Treasury will be unable to meet its payment obligations.

Investment Strategy Risk – The risk that, if the sub-adviser’s investment strategy does not perform as expected, the Fund could underperform its peers or lose money. There is no guarantee that the Fund’s investment objective will be achieved.

Active Trading Risk – Active trading could increase the Fund’s transaction costs and may increase your tax liability as compared to a fund with less active trading policies. These effects may adversely affect Fund performance.

Market Price Risk – The net asset value (“NAV”) of the Fund’s Shares will generally fluctuate with changes in the market value of the Fund’s holdings. The market prices of the Fund’s shares will generally fluctuate in accordance with changes in NAV, changes in the intraday value of the Fund’s holdings, as well as the relative supply of and demand for the shares on the NYSE Arca. The Sub-Adviser cannot predict whether the Fund’s shares will trade below, at or above their NAV. Price differences may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for the Fund’s shares will be closely related to, but not identical to, the same forces influencing the prices of the Fund’s holdings trading individually or in the aggregate at any point in time. In addition, unlike conventional ETFs, the Fund is not an index fund. The Fund is actively managed and does not seek to replicate the

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performance of a specified index. Index based ETFs have generally traded at prices which closely correspond to NAV per share. Actively managed ETFs have a limited trading history and, therefore, there can be no assurance as to whether and/or the extent to which the Fund’s shares will trade at premiums or discounts to NAV or to the intraday value of the Fund’s holdings.

Cash Transactions Risk – In certain instances, unlike other ETFs, the Fund may effect creations and redemptions partly or wholly for cash, rather than in-kind. Because the Fund may effect redemptions for cash, rather than in-kind distributions, it may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds and it may subsequently recognize gains on such sales that the Fund might not have recognized if it were to distribute portfolio securities in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in a more conventional ETF. Moreover, cash transactions may have to be carried out over several days if the securities market is relatively illiquid and may involve considerable brokerage fees and taxes. These brokerage fees and taxes, which will be higher than if the Fund sold and redeemed its shares principally in-kind, will be passed on to purchasers and redeemers of Creation Units in the form of creation and redemption transaction fees. In addition, these factors may result in wider spreads between the bid and the offered prices of the Fund’s shares than for more conventional ETFs.

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 are 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 and possibly face trading halts and/or delisting.

The Fund is subject to certain other risks, which are discussed in “Additional Information Regarding Investment Strategies and Risks” in the Fund’s statutory prospectus.

PAST PERFORMANCE. Because the Fund has not yet commenced operations, no performance history has been provided. Performance information will be available at www.hartfordfunds.com. Keep in mind that past performance does not indicate future results.

MANAGEMENT.  The Fund’s investment manager is Hartford Funds Management Company, LLC. The Fund’s sub-adviser is Wellington Management.

Portfolio Manager	Title	Involved with Fund Since
Craig A. Gainey, CFA	Senior Managing Director, Partner, and Fixed Income Portfolio Manager/Credit Analyst	2017

PURCHASE AND SALE OF FUND SHARES. The Fund is an exchange-traded fund (“ETF”). Individual Fund shares may only be purchased and sold on a national securities exchange through a broker-dealer and may not be purchased or redeemed directly with the Fund. The price of Fund shares is based on market price, and because ETF shares trade at market prices rather than NAV, shares may trade at a price greater than NAV (a premium) or less than NAV (a discount). The Fund will only issue or redeem shares at NAV that have been aggregated into blocks of 50,000 shares or multiples thereof  (“Creation Units”) with certain large institutional investors (“Authorized Participants”) who have entered into participation agreements with the Fund’s distributor, ALPS Distributors, Inc. (the “Distributor”). The Fund will issue or redeem Creation Units in return for a basket of securities and/or cash that the Fund specifies each Business Day.

TAX INFORMATION. The Fund’s distributions are generally taxable, and may be taxed as ordinary income or capital gains, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an individual retirement account. Such tax-deferred arrangements may be taxed later upon withdrawal of monies from those arrangements.

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 or financial advisor), the Fund’s related companies 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 financial advisor to recommend the Fund over another investment. Ask your financial advisor or visit your financial intermediary’s website for more information.

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