Index performance does not represent the fund's performance. It is not possible to invest directly in an index.

Exchange Traded Funds (ETFs) are bought and sold through exchange trading at market price (not NAV), and are not individually redeemed from the fund. Shares may trade at a premium or discount to their NAV in the secondary market. Brokerage commissions will reduce returns.

This fund is an actively managed ETF that does not seek to replicate the performance of a specified index. To determine whether to buy or sell a security, the portfolio managers consider, among other things, various fund requirements and standards, along with economic conditions, alternative investments, interest rates and various credit metrics. If the portfolio manager considerations are inaccurate or misapplied, the fund's performance may suffer.

Duration, which is an indication of the relative sensitivity of a security's market value to changes in interest rates, is based upon the aggregate of the present value of all principal and interest payments to be received, discounted at the current market rate of interest and expressed in years. The longer the weighted average duration of the fund's portfolio, the more sensitive its market value is to interest rate fluctuations. Duration is different from maturity in that it attempts to measure the interest rate sensitivity of a security, as opposed to its expected final maturity.

Generally, as interest rates rise, the value of the bonds held in the fund will decline. The opposite is true when interest rates decline.

The lower rated securities in which the fund invests are subject to greater credit risk, default risk and liquidity risk.

Derivatives may be more sensitive to changes in market conditions and may amplify risks.

The gross expense ratio is the fund's total annual operating costs, expressed as a percentage of the fund's average net assets for a given time period. It is gross of any fee waivers or expense reimbursement. The net expense ratio is the expense ratio after the application of any waivers or reimbursement. This is the actual ratio that investors paid during the fund's most recent fiscal year. Please see the prospectus for more information.

Brokerage Services are provided by American Century Brokerage, a division of American Century Investment Services, Inc., registered broker/dealer, member FINRA , SIPC .

Source: Bloomberg Index Services Ltd

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Exchange Traded Funds (ETFs): Foreside Fund Services, LLC - Distributor, not affiliated with American Century Investment Services, Inc.