iShares GNMA Bond ETF (GNMA) is an exchange-traded fund that seeks to track the investment results of an index composed of mortgage-backed pass-through securities guaranteed by the Government National Mortgage Association (GNMA, or Ginnie Mae); its portfolio primarily consists of GNMA I and GNMA II securities, including single-family and multifamily mortgage-backed bonds with maturities typically ranging from short to intermediate durations, supplemented by cash equivalents and Treasury securities for liquidity. The fund offers investors exposure to investment-grade, U.S. government-guaranteed fixed income within the government mortgage-backed segment, emphasizing broad maturities and market-value weighting, with key portfolio characteristics including a weighted average maturity of approximately 6.33 years, effective duration of 5.40 years, and holdings diversified across roughly 313 positions dominated by Government National Mortgage Association II (over 90%) and Government National Mortgage Association I (around 7%). Launched on February 14, 2012, and domiciled in the United States, the ETF trades on NASDAQ and is managed by BlackRock Fund Advisors, a subsidiary of BlackRock, Inc., headquartered in New York.
In recent developments, the fund maintained stable operations amid fixed income market volatility, with net assets at approximately $368 million and shares outstanding around 8.3 million as of late 2025; it experienced routine institutional ownership adjustments in 2025 Q1, including 10 new positions opened, 39 increases, 52 reductions, and 11 closures by hedge funds and institutions totaling $282 million in holdings. Manager transitions occurred in August 2025, with Jonathan Graves and Marcus Tom joining James Mauro as co-portfolio managers. Morningstar upgraded the ETF's Medalist Rating to Bronze from Neutral, citing improvements in its Process Pillar, while the fund continued monthly distributions, such as $0.1473 per share, reflecting ongoing yield generation in a higher-rate environment. No major acquisitions, partnerships, or structural changes were reported for the ETF itself in 2024-2025, though BlackRock as issuer sustained its focus on iShares fixed income products without significant GNMA-specific strategic shifts.