Invesco Ultra Short Duration 

The fund will invest at least 80% of its net assets in fixed income securities and in ETFs and closed-end funds that invest substantially all of their assets in fixed income securities. It uses a low duration strategy to seek to outperform the ICE BofA US Treasury Bill Index in addition to providing returns in excess of those available in U.S. Treasury bills, government repurchase agreements, and money market funds, while seeking to provide preservation of capital and daily liquidity.