OpenFlowLargest IPO by market cap in 2026?. Current implied probability: 50% yes. Total volume: $5.8M. Resolves December 31, 2026. Live odds aggregated from Polymarket and Kalshi on OpenFlow.
Largest IPO by market cap in 2026?
Anthropic leads market-implied odds at 60.9% for the largest 2026 IPO by debut market cap due to its accelerated timeline and ambitious scale. The AI firm confidentially filed its S-1 in June and is targeting an October listing at a potential $2 trillion valuation—exceeding SpaceX’s June debut at roughly $1.77 trillion—while pitching investors on $190–200 billion 2028 revenue and a $30 trillion TA…
Rules summary
This market will resolve to the company that achieves the highest market capitalization in U.S. dollars based on the official closing price on its first trading day in 2026. This market will resolve to a company that completes an Initial Public Offering (IPO) between January 1 and December 31, 2026, 11:59 PM ET. Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day. If two or more companies have exactly equal highest closing market capitalizations, this market will resolve to the company whose listed name co…