[Polymarket Hires Former Goldman Sachs Partner to Attract Wall Street Liquidity] Foresight News reports, according to CNBC, Polymarket has hired former Goldman Sachs partner and Global Head of ETF Accelerator Lisa Mantil to attract Wall Street liquidity. Brokers working with early institutional participants in prediction markets told CNBC that Polymarket has already discussed executing block trades on its U.S. exchange and is close to having the capability to do so.