Shayne Coplan 🦅 (@shayne_coplan) — Twitter Score 757 out of 1000

Shayne Coplan founded Polymarket in June 2020 and works there as CEO. Polymarket is a cryptocurrency-based prediction market where users deposit crypto via the Polygon blockchain to trade shares on future event outcomes. Shayne Coplan's Twitter Score is 757 out of 1000 (an Excellent rating) as of July 2026, ranking #91 (top 0.1%) out of 389,587 accounts tracked on this platform. Active on X since 2015, he has accumulated 208,537 followers as of July 2026 and published 1,198 posts.

Shayne Coplan raised $70 million across two funding rounds for Polymarket, with the most recent round led by Founders Fund. Ethereum co-founder Vitalik Buterin was among backers, alongside the cofounders of Airbnb, Figma, and Zynga, the cofounder of Uber, hedge fund veteran Glenn Dubin, and Coinbase. He has been involved with Ethereum since 2014.

Shayne Coplan and Polymarket faced regulatory action in January 2022, when the CFTC fined Polymarket $1.4 million and issued a cease-and-desist order for regulatory violations including failure to register as a Swap Execution Facility. Polymarket blocked access to U.S. customers following that settlement, until December 2, 2025. In November 2024, the FBI executed a search warrant at his home and seized his electronics as part of a Department of Justice investigation into Polymarket allegedly accepting trades from U.S.-based users. In July 2025, the DOJ and CFTC formally ended their investigations without bringing new charges.

Shayne Coplan oversaw a $2 billion investment from Intercontinental Exchange in Polymarket in October 2025 at a $9 billion valuation. Forbes reported he became the world's youngest self-made billionaire at age 27, with an estimated 11% stake in the company; Forbes also lists him on its 30 Under 30 in Finance and, as of June 28, 2026, places his real-time net worth at $1 billion, ranked 3349 on its real-time billionaires list. Following the end of federal investigations, Polymarket announced the acquisition of QCEX, a CFTC-licensed derivatives exchange and clearinghouse, for $112 million, to enable regulated U.S. operations. Polymarket also secured investment from Donald Trump Jr.-backed 1789 Capital, with Donald Trump Jr. taking an advisory role at the company, and in March 2026 acquired Brahma, a crypto and DeFi infrastructure startup, to scale its blockchain infrastructure.

Shayne Coplan's tracked portfolio includes PRAXIS, Arpeggi Labs, Catalog, Slide, Superform and Allora.

Shayne Coplan has been mentioned by 394 accounts, totaling 691 mentions.

Who follows Shayne Coplan on X?

Shayne Coplan draws notable followership from across the crypto and finance world. The accounts that follow Shayne Coplan include 2,421 founders, 590 angel investors, 1,508 influencers and 33 VCs, among them Chris Dixon, Toly, jesse.base.eth, Laura Shin, Ansem and Balaji.