...February 28, 2023 LONDON (S&P Global Ratings) Feb. 28, 2023--S&P Global Ratings today said it assigned fund credit quality ratings (FCQRs) and fund volatility ratings (FVRs) to eight exchange-traded funds (ETFs) managed by BlackRock Fund Advisors. The collection of iShares fixed-income ETFs are passively managed across a variety of investment strategies. BlackRock uses a representative sampling indexing strategy to manage the funds to the underlying benchmark indices. The FCQRs and FVRs we have assigned are: - iShares 20+ Year Treasury Bond BuyWrite Strategy ETF (TLTW): '##+f/##' - iShares High Yield Corporate Bond BuyWrite Strategy ETF (HYGW): 'B+f/##' - iShares Investment Grade Corporate Bond BuyWrite Strategy ETF (LQDW): '###+f/##' - iShares iBonds Dec 2032 Term Corporate ETF (IBDX): 'BBBf/##' - iShares iBonds Dec 2032 Term Treasury ETF (IBTM): '##+f/##' - iShares Inflation Hedged High Yield Bond ETF (HYGI): 'B+f/##' - iShares Inflation Hedged U.S. Aggregate Bond ETF (AGIH): 'A+f/##'...