Arthur is a founder of SIG and now oversees SIG’s operations in proprietary trading – including listed, NASDAQ and program trading – as well as the firm’s international trading activities in Dublin and Sydney. He also manages SIG's market maker training program, widely regarded as one of the premier training programs on Wall Street. Arthur has more than two decades of experience managing derivatives and equities trading operations, including options market making on the Philadelphia Stock Exchange.

Arthur received a BA in Biology from the State University of New York at Binghamton.

Todd started at SIG in 1997 as an assistant trader. He has traded equity and index derivative products on the floor of the Philadelphia Stock Exchange, on the NASDAQ and NYSE markets, and on international stock and derivative exchanges, most notably in Germany and the United Kingdom out of SIG’s Dublin office. He is currently overseeing global recruiting, asset management, and new business development. 

Todd received an MBA from The Wharton School and a BA from the University of Virginia.