Jane Street’s seasoned traders have a long history in ETFs, dating back to the 1993 launch of SPY, the first-ever ETF in the United States. Today, our firm is active in nearly 4,000 ETFs worldwide and we continuously refine our quantitative models and cutting-edge technology to provide order-book liquidity in over 45 countries. We are highly regarded by our counterparties for our consistently deep and reliable markets, both on- and off- exchanges. We maintain strong relationships with the major ETF providers, and consider ourselves experts in ETF structure and mechanics.