Kalshi and Polymarket Engage in Intense Rivalry and Sabotage

WHO:

NY Post - Kalshi, Polymarket, Shayne Coplan (founder of Polymarket)

WHAT:

NY Post - Kalshi played a role in a raid on the apartment of Polymarket's CEO in November 2024.

Techmeme - Kalshi and Polymarket engaged in efforts to undermine each other, including lobbying regulators and attempting to derail deals.

WHERE:

NY Post - The raid occurred at the apartment of Polymarket's CEO in Manhattan.

WHEN:

NY Post - The raid took place in November 2024.

WHY:

NY Post - The actions stemmed from ongoing rivalry and "bad blood" between Kalshi and Polymarket.

HOW:

Techmeme - Kalshi and Polymarket utilized lobbying, influence campaigns, and attempts to derail each other's business deals as methods of competition.

(UPDATED July 20, 2026 22:25 UTC)

Kalshi played a significant role in a raid on the Manhattan apartment of Polymarket's CEO, which took place in November 2024. This incident is part of an ongoing rivalry marked by "bad blood" between the two companies, with both engaging in efforts to undermine each other through lobbying and influence campaigns. The competition has escalated to the point where they have attempted to derail each other's business deals.