Investment companies SkyKnight Capital, Dragoneer Investment Group and Aquiline Capital Partners completed the $610m investment in StarStone US Holdings, which offers a diversified range of property and casualty insurance products for small to mid-sized businesses, through newly formed Core Specialty Insurance. "Today’s dynamic market conditions have created a need for dedicated underwriting capacity across multiple E&S and admitted lines of business. We witnessed the strength of the Validus management team first-hand and believe Jeff and Ed will build a market leader at StarStone," Jeff Greenberg, Aquiline Chairman and CEO.