People

Jeff Ma

Jeff Ma is a published Spider venture adviser. His career includes founding GolfSpan, CircleLending, CitizenSports and tenXer, which were acquired by other companies, and later data-science and analytics leadership at Twitter and startup leadership at Microsoft. His manager biography identifies current digital leadership at Troon and prior work helping sports organizations use analytics. He was a member of the MIT blackjack team and wrote TheHouseAdvantage; these career details do not establish individual investment checks.