The revised list names Open Door Partners, Unicorns Exchange, Pachamama, and Upmarket, with platforms like Hiive removed from the original alert.

Anthropic trimmed its unauthorized secondary-market platform list from eight firms to four after investor backlash and public naming of platforms heightened scrutiny.

In the same period, Anthropic announced a $65 billion funding round that values the company at $965 billion, surpassing OpenAI and marking the largest private fundraising on record.

Transfer restrictions in shareholder agreements are longstanding for Anthropic and OpenAI, and public naming of platforms turned routine boilerplate into a market-moving disclosure.

Anthropic is reportedly in early IPO discussions with Goldman Sachs, JPMorgan, and Morgan Stanley, with a potential listing as soon as October, though the handling of the unauthorized-platform issue raises governance questions.

Pre-IPO secondary-market activity showed implied valuations around $1 trillion, underscoring strong demand for exposure before an official listing.

Hiive CEO Sim Desai criticized the approach, noting his platform does not enable transfers without Anthropic’s approval and saying the original post caused confusion and reputational damage.

The initial notice declared that sales or transfers of Anthropic stock on the named platforms were void and would not be recorded on the books, applying to both preferred and common shares.

The move sparked market turmoil, with funds tied to Anthropic shares plunging and private brokers reassessing positions, creating investor uncertainty about share legality.

The $965 billion primary round sits between February’s $380 billion Series G and April’s roughly $1 trillion secondary valuation, illustrating market dynamics around governance, liquidity, and IPO timing.