SYSB was created on 2015-02-24 by iShares. The fund's investment portfolio concentrates primarily on broad credit fixed income. The ETF currently has 76.25m in AUM and 1013 holdings. SYSB tracks a systematic index of USD bonds, including Treasuries, securitized debt, investment grade corporates, and high yield, with rules-based tilts to credit quality, value, and duration.