Oscar Health Inc. OSCR is trading lower on Wednesday, with no apparent news to explain the move. Year-to-date, the stock has gained roughly 15%.Last week, the healthcare technology company announced a partnership with grocery chain Hy-Vee to launch a new employer health insurance plan, "Hy-Vee Health with Oscar."The plan will debut in Des Moines, Iowa, covering 400,000 local employees through the individual marketplace starting Nov. 1, with coverage effective Jan. 1, 2026.Employer-backed coverage in the ind ...