On November 11, 2026, TechFlow reported, citing The Defiant, that two Buildix snapshots put combined open interest in two Anthropic pre-IPO perpetual contracts on Hyperliquid at more than $311 million. The readings were taken 25 minutes apart, so they are not a simultaneous market-wide total.
Trade.xyz’s ANT contract had $109.37 million in open interest, about 30% above the $84.04 million recorded by The Defiant on November 10. EntropyIO’s ANTH contract had $201.81 million in open interest.
The contracts use different pricing references: ANT refers to one Anthropic Class A share, while each ANTH price point represents $1 billion in company valuation. Open-interest value does not mean Anthropic shares were purchased or that the company received financing.
Original report, published November 11, 2026, at 22:53 UTC+8.