State Street Prime Money Market ETF (MMK)

The State Street Prime Money Market ETF is a cash management fund from State Street Investment Management. It invests in short-term, high-quality money market instruments, which in a prime strategy can include commercial paper, certificates of deposit and other short-term corporate and bank obligations in addition to government securities.

The fund seeks to provide current income while maintaining liquidity and preserving capital, packaged in an exchange-traded format that can be bought and sold during the trading day.