...NEW YORK (S&P Global Ratings) May 10, 2018--S&P Global Ratings today said it assigned its 'A-f' fund credit quality rating (FCQR) and '##' fund volatility rating (FVR) on the iShares Inflation Hedged Corporate Bond ETF. Given the fund intends to hold only shares of iShares iBoxx $ Investment Grade Corporate Bond ETF and inflation swaps, we have assessed the underlying fund's portfolio to determine the preliminary fund credit quality rating. The final FCQR was assigned at a rating level equivalent to the preliminary FCQR, as there were no rating adjustments made as a result of the management assessment, portfolio risk assessment, or comparable rating analysis. The 'A-f' FCQR signifies that the credit quality of the fund's portfolio exposure is strong. The iShares Inflation Hedged Corporate Bond ETF is a transparent active exchange-traded fund (ETF), without an explicit index, that seeks to mitigate the inflation risk of a portfolio composed of U.S. dollar-denominated, investment-grade corporate...