William is a General Partner at SOSV, a US$300m venture capital fund known as "the Accelerator VC” where he is the Managing Director of , SOSV’s global Internet accelerator and the first accelerator in China and Managing Director of MOX, the mobile only accelerator with 130m smartphone users on its platform. SOSV is the #1 most active seed investor in the world according to TechCrunch Crunchbase. William joined SOSV from SingTel Innov8 Ventures where he was Managing Director supporting China investments. While at Innov8 he led investments including Yodo1 (mobile games), ( platform), (fintech), Lekan (children's media platform), and Massive Impact which was acquired by .
Previously, William was a Partner at Softbank China & India Holdings, a venture capital firm backed by Softbank and Cisco, leading investments in China and South East Asia. While at SoftBank he led investments in Silk Road Telecom (SRT) - in mobile enterprise cloud SaaS, - a payment platform acquired by Visa (NYSE: V), Punch Entertainment - a Vietnam mobile game developer acquired by (Tokyo: 2432), and - a Vietnam eCommerce and payment platform backed by eBay (NASDAQ: EBAY) and MOL Group (NASDAQ: MOLG). William spent 11 years as an equity research analyst most recently with Deutsche Bank where he was responsible for Internet and Telecom Equipment in Asia and China technology, media and telecom. Previously he covered Digital Media at Banc of America Securities in San Francisco and PC/Enterprise Hardware at Bear Stearns in New York. William is an active angel investor with 39 investments between 2004 and 2014.
In 2006 he was ranked #3 All-Asia analyst for Technology/Software and IT Services by Institutional Investor Magazine Asia. In 2005, he was ranked #1 stock picker in Technology, Media and Telecom, and #3 overall for Hong Kong/China by Thomson Reuters . He currently sits on the boards of advisors/directors for a number of companies including , Yodo1, DYAD, , Silk Road Telecom, , and as well as organizations including (), the largest and most active angel investing group in Asia, (), AAMA Shanghai, Digital Matters, and the US China Strong Foundation. He holds a BA from Bowdoin College.