Spindletop Capital
Founded in 2011, Spindletop focuses exclusively on healthcare. Based in Austin, Texas, the firm prefers to make more substantial investments in commercial-stage companies. Companies in its portfolio include Bioventus, a developer of orthobiologic solutions; HNI Healthcare, a physician practice management company that delivers hospitalist programs with other solutions and services; and Castle Biosciences, which develops and commercializes diagnostic and prognostic tests for cancers.