iShares Mortgage-Backed Securities Active ETF

The values shown for “market value,” “weight,” and “notional value” (the “calculated values”) are based off of a price provided by a third-party pricing vendor for the portfolio holding and do not reflect the impact of systematic fair valuation (“the vendor price”). The vendor price is not necessarily the price at which the Fund values the portfolio holding for the purposes of determining its net asset value (the “valuation price”). Holdings data shown reflects the investment book of record, which may differ from the accounting book of record used for the purposes of determining the Net Assets of the Fund. Notional value represents the portfolio's exposures based on the economic value of investments and options are delta-adjusted. Additionally, where applicable, foreign currency exchange rates with respect to the portfolio holdings denominated in non-U.S. currencies for the valuation price will be generally determined as of the close of business on the New York Stock Exchange, whereas for the vendor price will be generally determined as of 4 p.m. London. The calculated values may have been different if the valuation price were to have been used to calculate such values. The vendor price is as of the most recent date for which a price is available and may not necessarily be as of the date shown above.

Please see the “Determination of Net Asset Value” section of each Fund’s prospectus for additional information on the Fund’s valuation policies and procedures.