iShares US Mortgage Backed Securities UCITS ETF (IMBE.AS) seeks to track the performance of the Bloomberg US Mortgage Backed Securities Index, which measures investment-grade USD-denominated pass-through mortgage-backed securities issued by U.S. government agencies including Federal National Mortgage Association (Fannie Mae, 39.80% weight), Federal Home Loan Mortgage Corporation (Freddie Mac, 28.84% weight), and Government National Mortgage Association (Ginnie Mae II, 21.32% weight); uniform MBS (5.96% weight); Government National Mortgage Association I (2.13% weight); and Federal Home Loan Mortgage Corporation Gold (0.54% weight). The ETF provides exposure to fixed-rate, investment-grade securities rated at least BBB- by S&P/Fitch or Baa3 by Moody's with maturities of at least one year, employing a representative sampling methodology for replication. It distributes income semi-annually, maintains an ongoing charge of approximately 0.25%, and trades on Euronext Amsterdam (listed November 22, 2019), with additional listings across European exchanges serving institutional and retail fixed-income investors seeking U.S. MBS exposure.
Launched on April 19, 2016, as part of iShares IV Public Limited Company, an open-ended investment company domiciled in Ireland, the ETF is managed by BlackRock Advisors (UK) Limited from its London headquarters at 12 Throgmorton Avenue, EC2N 2DL. BlackRock Asset Management Ireland Limited serves as the promoter, with State Street Fund Services (Ireland) Limited as administrator and custodian. The fund operates primarily in USD with unhedged currency risk for non-USD investors and is available for sale in countries including Germany, the United Kingdom, the Netherlands, Switzerland, and others across Europe.
No major strategic changes, partnerships, acquisitions, funding rounds, product launches, or reorganizations have been reported for the ETF in the last 1-2 years as of December 2025; it continues stable operations tracking its benchmark amid ongoing portfolio rebalancing to reflect agency MBS holdings.