This ETF primarily concentrates its portfolio on fixed income securities. Under typical market conditions, a minimum of 80% of its net assets are allocated to these debt instruments. Furthermore, the fund generally ensures that at least 80% of its overall holdings consist of fixed income securities that hold specific, high-quality credit ratings: BBB- or A-2 or above from S&P Global Ratings (S&P), BBB- or F-2 or above from Fitch Ratings (Fitch), or Baa3 or Prime-2 or above from Moody's Investors Service (Moody's). If a security is unrated by these agencies, it may still be included if the fund's management deems its quality to be comparable.