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Tokenized Anthropic and OpenAI PreStocks on Solana Fall After Equity Transfer Warnings

Anthropic and OpenAI said Solana-based PreStocks tied to their private shares are unauthorized or worthless, highlighting that tokenized private-equity exposure depends on issuer-recognized ownership and transfer rights.

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Fact Check
All core elements of the claim are strongly corroborated by multiple independent sources. The Odaily article directly cites Anthropic's official support page and explicitly confirms the 24.94% PreStocks token drop to $1,023.9. PanewsLab and CoinPost confirm the scope covers tokenized securities and SPV-linked arrangements. The May 2026 timing is confirmed by publication timestamps. X posts from @beincrypto and @techedgedaily independently corroborate the policy language. The only minor uncertainty is that the official Anthropic support page itself could not be directly fetched, but consistent citation of the same URL across five independent sources makes the underlying policy statement highly credible.
Summary

Anthropic said unauthorized secondary share sales or transfers are invalid, and OpenAI and Anthropic both warned that Solana-based PreStocks tokens claiming exposure to their private shares are worthless or unsupported. Axios reported that Anthropic identified eight secondary trading platforms, including Hiive and Forge, as unapproved channels, while also noting that SPV structures may still offer indirect exposure that is difficult to police. The warnings triggered sharp declines in Anthropic- and OpenAI-linked PreStocks tokens, with reports citing drops of about 24.94%, roughly 26%, as much as 39%, and later 45% over 24 hours for Anthropic-linked tokens. A later update also said Anthropic’s token implied market capitalization fell from $1.4 trillion to $762 billion, erasing about $638 billion in implied value. The episode underscores that tokenized private-market instruments rely on enforceable off-chain rights and issuer approval, not only blockchain settlement.

Terms & Concepts
  • PreStocks: Tokenized instruments designed to track or represent shares or equity-style exposure in companies, including private firms such as Anthropic and OpenAI.
  • SPV (special purpose vehicle): A separate legal entity used to hold assets or structure investor exposure, often in private-market transactions.
  • Implied market capitalization: A valuation metric based on token price multiplied by a stated or assumed supply, which may not reflect realized market value or available liquidity.