iShares MBS ETF/  US4642885887  /

The iShares MBS ETF (the "Fund") seeks to track the investment results of an index composed of investment-grade mortgage-backed pass-through securities issued and/ or guaranteed by U.S. government agencies. The Fund seeks to track the investment results of the Bloomberg U.S. MBS Index (the "Underlying Index"), which measures the performance of investment-grade (as determined by Bloomberg Index Services Limited (the "Index Provider" or "Bloomberg")) mortgage-backed pass-through securities ("MBS") issued or guaranteed by U.S. government agencies or sponsored entities. The Underlying Index includes fixed-rate MBS issued by the Government National Mortgage Association ("GNMA" or "Ginnie Mae"), Federal National Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation ("Freddie Mac") that have 30-, 20-, or 15-year maturities. All securities in the Underlying Index must have a remaining weighted average maturity of at least one year. In addition, the securities in the Underlying Index must be denominated in U.S. dollars and must be non-convertible. The Underlying Index is market capitalization-weighted and the securities in the Underlying Index are updated on the last business day of each month.

The iShares MBS ETF (the "Fund") seeks to track the investment results of an index composed of investment-grade mortgage-backed pass-through securities issued and/ or guaranteed by U.S. government agencies.