Polymarket recruits Goldman's former ETF-accelerator head to bring Wall Street desks onto its US exchange

Polymarket needs buyers for the kind of product Mantil's old Goldman unit brought to market. For an event-contract exchange, those buyers are trading desks ^[3]. Mantil said she took the job to "help shape an exploding asset class" ^[18]. Shayne Coplan, the founder and chief executive, said in a statement that her Wall Street network made her the best choice ^[20]. She joins Warren Jenson, formerly of Amazon, Delta Air Lines and Nielsen, who is the company's first chief financial officer ^[6].

Block trades are how a desk moves size. Polymarket's international platforms ran their first about a month after Kalshi's ^[8]. The US exchange, the venue Mantil is meant to fill, only opened in May ^[5]. Cryptopolitan's report does not include trading volumes for the US exchange or say whether it has hosted a block trade.

Polymarket raised $1 billion from backers including 1789 Capital and Intercontinental Exchange and is valued at about $21 billion, so the new money equals about 4.8% of the valuation ^[4][1]. A $21 billion price is a bet on future trading volume ^[4]. Institutional volume, in turn, depends on a legal status that can go one of three ways.

A federal court could side with Polymarket's countersuit and leave the CFTC as the one regulator to satisfy ^[15]. New York could win instead, and the ORACLE Act, sponsored by State Senator Joseph Addabbo Jr., would add an under-21 ban and outright bans on certain markets if it passes ^[16]. Or the CFTC and House Oversight inquiries could produce findings that keep compliance departments away whatever the answer on jurisdiction ^[9][10].

Compliance departments will also look at who else is trading. The Anti-Corruption Data Collective counted 152 accounts that made about $8 million on war markets at a 97% win rate, roughly $52,600 per account ^[12][2]. Polymarket has not faced direct accusations. It has referred dozens of flagged accounts to the Department of Justice, and Coplan points to proprietary surveillance software designed by a former FBI official ^[11].

I think the hire is a bet that institutional volume can be built on the US-regulated exchange while New York's case is pending. Polymarket is paying for a sales executive now instead of waiting for a ruling. The counter-thesis is that few large desks will join a venue that New York's attorney general and governor call an unlicensed gambling operation until a judge settles the question ^[14]. In that case Mantil's first year produces meetings and little volume. The thesis is wrong if New York prevails in court, or if one of the CFTC inquiries becomes a case against Polymarket itself.