The research firm expects Anthropic's debut to attract about $250 million in ​net retail buying, based on its analysis ​of retail activity on listing days and the ⁠volume of its pre-IPO perpetual futures traded on ​Hyperliquid. This would be twice SpaceX's IPO record of $118 ​million in retail buying.

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"Judging by pre-IPO perp trading, Anthropic is shaping up to be a record retail IPO," Viraj Patel, global ​macro strategist at Vanda Research said, in the note.

Pre-IPO ​perpetual futures are a type of derivative contract which trade ‌on ⁠exchanges like Hyperliquid and Coinbase, and allow traders to bet on private companies' valuation. They have no direct link to the underlying shares but are priced ​with reference to ​the company's ⁠latest disclosed pre-IPO valuation.

Only six stocks have topped $250 million in single-day retail buying since ​2024, the data firm added.

"Anthropic next week could draw ​the ⁠kind of retail buying that we've rarely seen in our data," Vanda said.

Anthropic is targeting a valuation of ⁠up ​to $1.4 trillion in its IPO, ​with shares expected to start trading on the Nasdaq on November 19.

Reporting ​by Sruthi Shankar in Bengaluru; Editing by Leroy Leo