HIYY was created on 2025-09-22 by YieldMax. The fund's investment portfolio concentrates primarily on health care equity. HIYY seeks to provide current income and capped gains on the Hims & Hers Health, Inc. stock (HIMS) through a synthetic covered call strategy, collateralized by cash and US Treasurys. The actively managed fund uses both standardized exchange-traded and FLEX options.