BRTR has the same investment objective, benchmark, and portfolio managers as the BlackRock Total Return Mutual Fund. See more: “A Pending BlackRock ETF to Watch” “With over 60,000 global fixed income securities, it can be incredibly complex for the everyday investor to differentiate between the winners and losers,” Rieder said. BlackRock also recently launched 10 iShares ETFs that invest in U.S. Treasury Inflation-protected securities (TIPS) of varying maturities.