Lisa Mantil

Mantil worked at Goldman Sachs for many years and rose through the ranks to partner; Polymarket chief executive Shayne CoplanShayne CoplanShayne Coplan is the founder and chief executive officer of Polymarket, the prediction market platform he founded in 2020, and advocates using market prices to aggregate people’s judgments about the probability of events. He attended New York University before leaving to start a company, and has led Polymarket’s fundraising, its return to the U.S. market, and its product expansion.Open the full entry said she spent 27 years at Goldman Sachs and that Polymarket is only the second job of her career (another account puts her time at Goldman Sachs at nearly three decades). On November 7, 2018, Goldman Sachs announced its Partner Class of 2018, which included Mantil as a member of its Securities division in New York.⁠[1][1][2][3][3]

Mantil served as global head of Goldman Sachs ETF Accelerator. Introduced in November 2022 in response to client demand, the business is a digital platform that enables clients to quickly launch, list, and manage exchange-traded funds (ETFs), providing services across fund launch and integration into the ETF ecosystem, portfolio implementation, and capital markets. On October 5, 2023, Goldman Sachs announced that three actively managed ETFs from Brandes Investment Partners were the first funds launched through the platform; Mantil said the team looked forward to continuing to scale the business and support clients’ ambitions in the industry.⁠[4][4][4][4][4][4]

On March 25, 2024, Eagle Capital Management’s first ETF, the Eagle Capital Select Equity ETF, was listed through ETF Accelerator; it was the fifth ETF launched through the platform and its first via a separately managed account (SMA) conversion. Mantil said the team had focused since day one on giving clients the tools, expertise, and infrastructure needed to enter the fast-growing ETF space, and would continue helping clients enter it through SMA or mutual fund conversions or by bringing new strategies to market.⁠[5][5][5][5]

On September 29, 2026, the prediction market platform Polymarket announced that it had hired Mantil as head of institutional growth. She will lead Polymarket’s work with institutional clients such as investment managers, banks, corporations, fund managers, and trading firms, expanding participation by Wall Street financial firms and large investors and positioning prediction markets as tools for investing and risk management.⁠[2][2][6][7]

Coplan announced the appointment on X, saying the two had been introduced by Goldman Sachs chief executive David Solomon and that Mantil’s experience and relationships across the institutional world were world class. Mantil said that joining Polymarket was a rare chance to help shape an exploding asset class at an inflection point in its development.⁠[1][1][1][1]

The appointment came as Polymarket sought more institutional business. Polymarket had already worked with larger financial players, including the crypto prime brokerage FalconXFalconXFalconX is a digital asset prime brokerage for institutional clients, providing crypto asset trading, financing, custody, and other services; in 2025 it acquired 21Shares, an issuer of crypto exchange-traded products.Open the full entry, to complete block trades. Polymarket said that institutions had largely relied on proxies and correlated assets to hedge risk, with no guarantee that those instruments would move in line with the risks they were meant to hedge, and that institutional access to Polymarket gives capital a direct way to hedge risks that previously lacked dedicated markets.⁠[2][6][6]