Diversified Credit Portfolio of ETFs Series 15

The Trust will invest at least 80% of the value of its assets in shares of ETFs that invest substantially all of their assets in fixed-income securities of varying credit qualities and maturities. Such fixed-income securities may include convertible securities, senior loans, floating-rate instruments, mortgage-backed securities and municipal bonds.

The Trust may also invest in preferred ETFs. The fixed-income and/or preferred ETFs included in the Trust’s portfolio invest in a wide range of debt and preferred securities rated below investment-grade through investment-grade. High-yield, below investment-grade securities or “junk” bonds are considered to be speculative and are subject to greater market and credit risks than investment-grade securities.

The fixed-income and/or preferred ETFs included in the Trust’s portfolio invest in debt and/or preferred securities with short-term, medium-term and long-term maturities. Typically, fixed-income securities with longer periods before maturity are more sensitive to interest rate changes.

The fixed-income and/or preferred ETFs included in the Trust’s portfolio may invest in foreign securities, including securities issued by companies headquartered or incorporated in countries considered to be emerging markets.

The Sponsor, with the assistance of Guggenheim Partners Investment Management, LLC (“GPIM”), has selected a portfolio of ETFs believed to have the best potential for current income while taking into consideration risks and opportunities that align with GPIM’s macroeconomic outlook. When selecting the ETFs for the Trust, the Sponsor considers a number of factors including, but not limited to, the size, liquidity and daily trading volume, the current dividend yield, average duration, level of credit exposure, the strategy and investment objective, the expense ratio and limitations on the overlap of the underlying securities held by the ETFs.

As with all investments, you may lose some or all of your investment in the Trust. No assurance can be given that the Trust’s investment objective will be achieved. The Trust also might not perform as well as you expect. This can happen for reasons such as these:

• Securities prices can be volatile. The value of your investment may fall over time. Market value fluctuates in response to various factors. These can include stock market movements, purchases or sales of securities by the Trust, government policies, litigation, and changes in interest rates, inflation, the financial condition of the securities’ issuer or even perceptions of the issuer. Units of the Trust are not deposits of any bank and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

• Share prices or distributions on the securities in the Trust may decline during the life of the Trust. There is no guarantee that share prices of the securities in the Trust will not decline and that the issuers of the securities will declare distributions in the future and, if declared, whether they will remain at current levels or increase over time.

• The Trust invests in shares of ETFs. ETFs are investment pools that hold other securities. The ETFs in the Trust are usually passively-managed index funds that seek to replicate the performance or composition of a recognized securities index. ETFs are subject to various risks, including management’s ability to meet the fund’s investment objective. Shares of ETFs may trade at a discount from their net asset value in the secondary market. This risk is separate and distinct from the risk that the net asset value of the ETF shares may decrease. The amount of such discount from net asset value is subject to change from time to time in response to various factors. The underlying ETF has management and operating expenses. Consequently, you will bear not only your share of your Trust’s expenses, but also the expenses of the underlying ETFs. By investing in ETFs, the Trust incurs greater expenses than you would incur if you invested directly in the ETFs.

• The ETFs are subject to annual fees and expenses, including a management fee. Unitholders of the Trust will bear these fees in addition to the fees and expenses of the Trust. See “Fees and Expenses” for additional information.

• The Trust is subject to an ETF’s index correlation risk. To the extent that an underlying ETF is an index tracking ETF, Index correlation risk is the risk that the performance of an ETF will vary from the actual performance of the fund’s target index, known as “tracking error.” This can happen due to fund expenses, transaction costs, market impact, corporate actions (such as mergers and spin-offs) and timing variances.

• The value of the fixed-income securities ETFs will generally fall if interest rates, in general, rise. Typically, fixed-income securities with longer periods before maturity are more sensitive to interest rate changes. The Trust may be subject to greater risk of rising interest rates than would normally be the case due to the current period of historically low rates.

• An ETF or an issuer of securities held by an ETF may be unwilling or unable to make principal payments and/or to declare distributions in the future, may call a security before its stated maturity, or may reduce the level of distributions declared. Issuers may suspend dividends during the life of the Trust. This may result in a reduction in the value of your units.

• The financial condition of an ETF or an issuer of securities held by an ETF may worsen, resulting in a reduction in the value of your units. This may occur at any point in time, including during the primary offering period. As the Trust is unmanaged, a downgraded security will remain in the portfolio.

• Economic conditions may lead to limited liquidity and greater volatility. The markets for fixed-income securities, such as those held by certain ETFs, may experience periods of illiquidity and volatility. General market uncertainty and consequent repricing risk have led to market imbalances of sellers and buyers, which in turn have resulted in significant valuation uncertainties in a variety of fixed-income securities. These conditions resulted, and in many cases continue to result in, greater volatility, less liquidity, widening credit spreads and a lack of price transparency, with many debt securities remaining illiquid and of uncertain value. These market conditions may make valuation of some of the securities held by an ETF uncertain and/or result in sudden and significant valuation increases or declines in its holdings.

• Certain ETFs held by the Trust invest in municipal bonds. Municipal bonds are long-term fixed rate debt obligations that decline in value with increases in interest rates, an issuer’s worsening financial condition, a drop in bond ratings or when there is a decrease in the federal income tax rate. Typically, bonds with longer periods before maturity are more sensitive to interest rate changes. Municipal bonds generally generate income exempt from federal income taxation, but may be subject to the alternative minimum tax. In addition, some or all of the income generated by an ETF may not be exempt from regular federal or state income taxes and as a result, the related income paid by the Trust may also be subject to regular federal and state income taxes. Capital gains, if any, may be subject to tax.

• Certain ETFs held by the Trust invest in securities that are structured as floating-rate instruments. The yield on these securities will generally decline in a falling interest rate environment, causing the ETFs to experience a reduction in the income they receive from these securities. A sudden and significant increase in market interest rates may increase the risk of payment defaults and cause a decline in the value of these investments and the value of the ETFs held by the Trust.

• Certain ETFs held by the Trust invest in mortgage-backed securities. Mortgage-backed securities represent direct or indirect participations in, or are secured by and payable from, mortgage loans secured by real property and can include single- and multi-class pass-through securities and collateralized mortgage obligations. Unscheduled or early payments of principal and interest on the underlying mortgages may make the securities' effective maturity shorter than anticipated. Rising interest rates tend to extend the duration of mortgage-backed securities, making them more sensitive to changes in interest rates, and may reduce the market value of the securities. In addition, mortgage-backed securities are subject to prepayment risk, the risk that borrowers may pay off their mortgages sooner than expected, particularly when interest rates decline. This can reduce the ETFs’, and therefore the Trust’s, returns because the ETFs may have to reinvest that money at lower prevailing interest rates.

• Certain ETFs held by the Trust invest in securities that are rated below investment-grade and are considered to be “junk” securities. Below investment-grade obligations are considered to be speculative and are subject to greater market and credit risks, and accordingly, the risk of nonpayment or default is higher than with investment-grade securities. In addition, such securities may be more sensitive to interest rate changes and more likely to receive early returns of principal in falling rate environments.

• Certain ETFs held by the Trust may invest in securities that are rated as investment-grade by only one rating agency. As a result, such split-rated securities may have more speculative characteristics and are subject to a greater risk of default than securities rated as investment-grade by more than one rating agency.

• Certain ETFs held by the Trust invest in foreign securities. Investment in foreign securities presents additional risk. Foreign risk is the risk that foreign securities will be more volatile than U.S. securities due to such factors as adverse economic, currency, political, social or regulatory developments in a country, including government seizure of assets, excessive taxation, limitations on the use or transfer of assets, the lack of liquidity or regulatory controls with respect to certain industries or differing legal and/or accounting standards.

• Certain ETFs held by the Trust invest in securities issued by companies headquartered or incorporated in countries considered to be emerging markets. Emerging markets are generally defined as countries with low per capita income in the initial stages of their industrialization cycles. Risks of investing in developing or emerging countries include the possibility of investment and trading limitations, liquidity concerns, delays and disruptions in settlement transactions, political uncertainties and dependence on international trade and development assistance. Companies headquartered in emerging market countries may be exposed to greater volatility and market risk.

• The Sponsor does not actively manage the portfolio. The Trust will generally hold, and may, when creating additional units, continue to buy, the same securities even though a security’s outlook, market value or yield may have changed.

• Inflation may lead to a decrease in the value of assets or income from investments.

See “Investment Risks” in Part A of the prospectus and “Risk Factors” in Part B of the prospectus for additional information.