Summary Prospectus
Touchstone Large Cap Focused Fund	October 30, 2017

Class A Ticker: SENCX Class C Ticker: SCSCX

Class Y Ticker: SICWX Institutional Class: SCRLX

Before you invest, you may want to review the Fund’s prospectus, which contains information about the Fund and its risks. The Fund’s prospectus and Statement of Additional Information, both dated October 30, 2017, as amended from time to time, are incorporated by reference into this summary prospectus. For free paper or electronic copies of the Fund’s prospectus and other information about the Fund, go to TouchstoneInvestments.com/literature-center, call 1.800.543.0407, or ask any financial advisor, bank, or broker-dealer who offers shares of the Fund.

TOUCHSTONE LARGE CAP FOCUSED FUND SUMMARY

The Fund’s Investment Goal

The Touchstone Large Cap Focused Fund (the “Fund”) seeks to provide investors with capital appreciation.

The Fund’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 qualify for sales charge discounts for Class A shares if you and your family invest, or agree to invest in the future, $50,000 or more in Touchstone Funds. More information about these and other discounts is available from your financial professional, in the section entitled “Choosing a Class of Shares” in the Fund’s prospectus on page 34, in Appendix A – Intermediary-Specific Sales Charge Waivers and Discounts to the Fund's prospectus, and in the Fund’s Statement of Additional Information (“SAI”) on page 49.

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Touchstone Large Cap Focused Fund

	Class A		Class C		Class Y		Institutional Class
Shareholder Fees (fees paid directly from your investment)
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.75	%	None		None		None
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	None		1.00	%	None		None
Wire Redemption Fee	Up to $15		Up to $15		Up to $15		Up to $15
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees	0.57	%	0.57	%	0.57	%	0.57	%
Distribution and/or Shareholder Service (12b-1) Fees	0.25	%	1.00	%	None		None
Other Expenses(1)	0.26	%	0.30	%	0.23	%	0.23	%
Total Annual Fund Operating Expenses	1.08	%	1.87	%	0.80	%	0.80	%
Fee Waiver or Expense Reimbursement(2)	(0.08	)%	(0.08	)%	(0.08	)%	(0.15	)%
Total Annual Fund Operating Expenses After Fee Waiver or Expense Reimbursement(2)	1.00	%	1.79	%	0.72	%	0.65	%

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⁽¹⁾ The Fund is newly formed and will commence operations following the completion of the reorganization of the Sentinel Common Stock Fund (the "Predecessor Fund"), a series of Sentinel Group Funds, Inc., into the Fund, which is expected to occur on or about October 27, 2017 (the "Reorganization"). Other Expenses are estimated based on fees and expenses incurred by the Predecessor Fund, as well as other funds within the Touchstone fund complex during the most recent fiscal year. 

⁽²⁾Touchstone Advisors, Inc. (the "Advisor" or "Touchstone Advisors") and Touchstone Strategic Trust (the “Trust”) have entered into a contractual expense limitation agreement whereby Touchstone Advisors will waive a portion of its fees or reimburse certain Fund expenses (excluding dividend and interest expenses relating to short sales; interest; taxes; brokerage commissions and other transaction costs; portfolio transaction and investment related expenses, including expenses associated with the Fund's liquidity provider; other expenditures which are capitalized in accordance with U.S. generally accepted accounting principles; the cost of “Acquired Fund Fees and Expenses,” if any; and other extraordinary expenses not incurred in the ordinary course of business) in order to limit annual Fund operating expenses to 1.00%, 1.79%, 0.72%, and 0.65% of average daily net assets for Classes A, C, Y, and Institutional Class shares, respectively. This contractual expense limitation will remain in effect for at least two years following the closing of the Reorganization. The terms of the contractual expense limitation agreement provide that Touchstone Advisors is entitled to recoup, subject to approval by the Board, such amounts waived or reimbursed for a period of up to three years from the date of reimbursement or waiver. The Fund will make repayments to Touchstone Advisors only if such repayment does not cause the Fund’s expense ratio (after the repayment is taken into account) to exceed both (a) the expense limitation in place when such amounts were waived and (b) 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, except as indicated, 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

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Touchstone Large Cap Focused Fund

remain the same and that all fee waivers or expense limits for the Fund will expire after two years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Assuming Redemption at End of Period								Assuming No Redemption
	Class A		Class C		Class Y		Institutional Class		Class C
1 Year	$	671	$	282	$	74	$	66	$	182
3 Years	$	883	$	572	$	239	$	225	$	572
5 Years	$	1,121	$	996	$	428	$	414	$	996
10 Years	$	1,803	$	2,177	$	975	$	961	$	2,177

Portfolio Turnover. The Fund pays transaction costs, such as brokerage commissions, when it buys and sells securities (i.e., “turns over” its portfolio). A higher portfolio turnover 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 total annual fund operating expenses or in the example, affect the Fund’s performance. The portfolio turnover rate for the Predecessor Fund for the fiscal year ended November 30, 2016 was 8%.

The Fund’s Principal Investment Strategies

The Fund invests, under normal market conditions, at least 80% of its assets in large capitalization equity securities. The Fund invests primarily in issuers having a market capitalization, at the time of purchase, above $5 billion. The Fund’s 80% policy is a non-fundamental investment policy that can be changed by the Fund upon 60 days’ prior notice to shareholders. Equity securities include common stock and preferred stock. These securities may be listed on an exchange or traded over-the-counter.

In selecting securities for the Fund, the Fund’s sub-advisor, Fort Washington Investment Advisors, Inc. (“Fort Washington” or the “Sub-Advisor”), seeks to invest in companies that:

• Are trading below its estimate of the companies’ intrinsic value; and

• Have a sustainable competitive advantage or a high barrier to entry in place. The barrier(s) to entry can be created through a cost advantage, economies of scale, high customer loyalty, or a government barrier (e.g., license or subsidy). Fort Washington believes that the strongest barrier to entry is the combination of economies of scale and higher customer loyalty.

The Fund will generally hold 25 to 40 companies, with residual cash and equivalents expected to represent less than 10% of the Fund’s net assets. The Fund may, at times, hold fewer securities and a higher percentage of cash and equivalents when, among other reasons, Fort Washington cannot find a sufficient number of securities that meets its purchase requirements. Although the Fund may invest in any economic sector, at times it may emphasize one or more particular sectors.

The Fund may invest up to 35% of its assets in securities of foreign issuers through the use of ordinary shares or depositary receipts such as American Depositary Receipts (“ADRs”). The Fund may also invest in securities of emerging market countries.

The Fund will generally sell a security if it reaches Fort Washington’s estimate of fair value, if a more attractive investment opportunity is available, or if a structural change has taken place and Fort Washington cannot reliably estimate the impact of the change on the business fundamentals.

The Fund is non-diversified and may invest a significant percentage of its assets in the securities of a single company.

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Touchstone Large Cap Focused Fund

The Fund’s Principal Risks

The Fund’s share price will fluctuate. You could lose money on your investment in the Fund, and the Fund could also return less than other investments. The Fund is subject to the principal risks listed below.

Equity Securities Risk: The Fund is subject to the risk that stock prices will fall over short or extended periods of time. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by these companies may decline in response to such developments, which could result in a decline in the value of the Fund’s shares.

• Large-Cap Risk: Large-cap companies may be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.

Foreign Securities Risk: Investing in foreign securities poses additional risks since political and economic events unique in a country or region will affect those markets and their issuers, while such events may not necessarily affect the U.S. economy or issuers located in the United States. In addition, investments in foreign securities are generally denominated in foreign currency. As a result, changes in the value of those currencies compared to the U.S. dollar may affect (positively or negatively) the value of the Fund's investments. Foreign markets may be less liquid and more volatile than U.S. markets and offer less protection to investors.

• Depositary Receipts Risk: Foreign receipts, which include ADRs, GDRs, and European Depositary Receipts, are securities that evidence ownership interests in a security or a pool of securities issued by a foreign issuer. The risks of depositary receipts include many risks associated with investing directly in foreign securities.

• Emerging Markets Risk: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. In addition, the financial stability of issuers (including governments) in emerging market countries may be more precarious than that of issuers in other countries.

Management Risk: In managing the Fund’s portfolio, the Advisor engages one or more sub-advisors to make investment decisions for a portion of or the entire portfolio. There is a risk that the Advisor may be unable to identify and retain sub-advisors who achieve superior investment returns relative to other similar sub-advisors.

Non-Diversification Risk: The Fund is non-diversified, which means that it may invest a greater percentage of its assets than a diversified mutual fund in the securities of a limited number of issuers. The use of a non-diversified investment strategy may increase the volatility of the Fund’s investment performance, as the Fund may be more susceptible to risks associated with a single economic, political, or regulatory event than a diversified fund.

Sector Focus Risk: The Fund may invest a high percentage of its assets in specific sectors of the market in order to achieve a potentially greater investment return. As a result, the Fund may be more susceptible to economic, political, and regulatory developments in a particular sector of the market, positive or negative than a fund that does not invest a high percentage of its assets in specific sectors.

As with any mutual fund, there is no guarantee that the Fund will achieve its investment goal. You can find more information about the Fund’s investments and risks under the “Investment Strategies and Risks” section of the Fund’s prospectus.

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Touchstone Large Cap Focused Fund

The Fund’s Performance

The Fund is a new series of Touchstone Strategic Trust (the "Trust") and has no performance history. As a result of the Reorganization, the performance and accounting history of the Predecessor Fund will be assumed by the Fund.  Performance information included herein is that of the Predecessor Fund. For a discussion on the “Prior Performance for Similar Accounts Managed by the Sub-Advisor” see the Fund’s prospectus on page 33.

The bar chart and the performance table below illustrate the risks and volatility of an investment in the Fund by showing changes in the Predecessor Fund’s performance from calendar year to calendar year and by showing how the Predecessor Fund’s average annual total returns for one year, five years, and ten years compare with the S&P 500® Index. The bar chart does not reflect any sales charges, which would reduce your return. The performance table does reflect any applicable sales charges. Past performance of the Predecessor Fund (before and after taxes) does not necessarily indicate how the Fund will perform in the future. More recent performance for the Fund is available at no cost by visiting TouchstoneInvestments.com or by calling 1.800.543.0407.

Predecessor Fund - Class A Shares Total Return as of December 31 (%)

Best Quarter: Second Quarter, 2009 17.55%         Worst Quarter: Fourth Quarter, 2008 (21.75%)

The Predecessor Fund’s calendar year-to-date total return for Class A shares as of September 30, 2017 was 15.11%.

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Touchstone Large Cap Focused Fund

Average Annual Total Returns

For the Periods Ended December 31, 2016

Predecessor Fund	Inception Date	1 Year		5 Years		10 Years
Class A (return before taxes)	1/12/1934	5.70	%	11.89	%	6.37	%
Class A (return after taxes on distributions)	1/12/1934	3.97	%	10.16	%	5.37	%
Class A (return after taxes on distributions and sale of fund shares)	1/12/1934	4.65	%	9.39	%	5.08	%
Class C (return before taxes)	5/4/1998	9.38	%	12.14	%	6.01	%
Class I* (return before taxes)	5/4/2007	11.58	%	13.38	%	7.27	%
Class R6** (return before taxes)	12/23/2014	11.64	%	13.20	%	6.99	%
S&P 500® Index(1) (reflects no deduction for fees, expenses or taxes)	N/A	11.96	%	14.66	%	6.95	%

*Class Y shares of the Fund will assume the performance history of Class I shares of the Predecessor Fund, shown here, upon completion of the Reorganization.  Performance of Class I shares of the Predecessor Fund prior to May 4, 2007 (the inception date for Class I shares) is based on the Predecessor Fund's Class A share performance.

**Institutional Class shares of the Fund will assume the performance history of Class R6 shares of the Predecessor Fund, shown here, upon completion of the Reorganization. Performance of Class R6 shares of the Predecessor Fund prior to December 23, 2014 (the inception date for Class R6 shares) is based on the Predecessor Fund's Class A share performance.

⁽¹⁾  The S&P 500® Index consists of approximately 500 widely held U.S. equity securities chosen for market size, liquidity, and industry group representation.

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. Your after–tax returns may differ from those shown and depend on your tax situation. The after–tax returns do not apply to shares held in an IRA, 401(k), or other tax–advantaged account. After–tax returns are only shown for Class A shares and after–tax returns for other classes will vary.

The Fund’s Management

Investment Advisor

Touchstone Advisors, Inc.

Sub-Advisor	Portfolio Manager	Investment Experience with the Fund	Primary Title with Sub-Advisor
Fort Washington Investment Advisors, Inc.	James Wilhelm	Since inception in 2017	Managing Director, Head of Public Equities

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Touchstone Large Cap Focused Fund

	Classes A, C, and Y
Buying and Selling Fund Shares Minimum Investment Requirements	Initial Investment		Additional Investment
Regular Account	$	2,500	$	50
Retirement Account or Custodial Account under the Uniform Gifts/Transfers to Minors Act	$	1,000	$	50
Investments through the Automatic Investment Plan	$	100	$	50

	Institutional Class
	Initial Investment		Additional Investment
Regular Account	$	500,000	$	50

You may buy and sell shares in the Fund on a day when the New York Stock Exchange is open for trading. Classes A and C shares may be purchased and sold directly through Touchstone Securities, Inc. (“Touchstone Securities”) or through your financial intermediary. Class Y shares are available only through your financial intermediary. Institutional Class shares are available through Touchstone Securities, Inc. or your financial intermediary. Shares may be purchased or sold through Touchstone Securities by writing to it at P.O. Box 9878, Providence, Rhode Island 02940, calling 1.800.543.0407, or visiting the Touchstone Funds’ website: TouchstoneInvestments.com. You may only sell shares over the telephone or via the Internet if the amount is less than or equal to $100,000. Shares held in qualified retirement plans cannot be sold by telephone or via the Internet. If your shares are held by a financial intermediary you will need to follow its purchase and redemption procedures.

Tax Information

The Fund intends to make distributions that may be taxed as ordinary income or capital gains except when shares are held through a tax-advantaged account, such as a 401(k) plan or an individual retirement account. Withdrawals from a tax-advantaged account, however, may be taxable.

Financial Intermediary Compensation

If you purchase shares in the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its 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 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.

TSF-54BB-TST-SENCX-1710

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