Venture capital funds proliferated outside the US over the past decade, but few of them can match funds based in the industry’s home for performance. Eight of the 10 best-performing firms are located in the US, according to a ranking compiled by Oliver Gottschalg, who teaches at HEC Business School Paris. Healthcare-focused The Column Group is the top-performing venture capital firm for the second year in a row, according to the annual study which Dow Jones has published since 2010.