Solana-based PreStocks linked to Anthropic and OpenAI have plummeted after both AI companies blocked unauthorized equity transfers. Anthropic-linked products fell about 40%, while OpenAI-linked products dropped over 30% on Jupiter's pre-IPO venue. The move highlights the fragility of tokenized claims that lack company recognition and shareholder rights. The restrictions imposed by Anthropic and OpenAI cover direct trades, SPV shares, tokenized ownership, and forward contracts, leaving buyers without legal standing in company records. Despite this, both companies continue to allow controlled employee liquidity, with OpenAI recently permitting significant share sales. This development underscores the challenges facing tokenized pre-IPO markets, as they navigate legal enforceability and credibility issues.