I've been bullish on CLO ETFs these past few years, due to their strong, above-average yields and performance track-records. The BlackRock AAA CLO ETF (NASDAQ:CLOA) is one of BlackRock's forays in this area, with the fund focusing on AAA-rated CLO tranches. CLOA's above-average 6.1% yield, strong performance track-record, and extremely low credit and interest rate risk, make the fund a buy. CLOA is extremely similar to the larger, more well-known Janus Henderson AAA CLO ETF (NYSEARCA: JAAA). CLOA has marginally higher returns, but JAAA has a marginally higher yield.