State Street Prime Money Market ETF

MMK was created on 2026-02-10 by State Street . The fund's investment portfolio concentrates primarily on broad credit fixed income. The ETF currently has 29.01m in AUM and 43 holdings. MMK is an actively managed ETF that broadly invests in ultra-short term money market instruments issued from around the world. The fund assesses instruments based on relative attractiveness using its own credit research team.