Anthropic Unauthorized Platforms List Cut in Half After Backlash

Anthropic Unauthorized Platforms List Cut in Half After Backlash

Quick Reads

• Anthropic reduced its unauthorized share-trading platform list from eight firms to four.
• The original warning crashed publicly traded funds and panicked private market investors.
• Hiive’s CEO said Anthropic never contacted his platform before the public naming.
• Anthropic raised $65 billion at a $965 billion valuation the same week it walked back the list.
• The company is reportedly in early IPO talks with Goldman Sachs, JPMorgan, and Morgan Stanley.

Anthropic unauthorized platforms made headlines this week, and then quietly disappeared from a list that had just upended private markets. Anthropic updated its warning about secondary market platforms illegally selling its shares, cutting the named firms from eight down to four. The revised notice now targets only Open Door Partners, Unicorns Exchange, Pachamama, and Upmarket.

The original notice stated that any sale or transfer of Anthropic stock through the named platforms was void. Furthermore, it declared those transactions unrecognized on the company’s books. Consequently, the warning applied to both preferred and common stock. It was, notably, the first time a major AI company had publicly named specific platforms as unauthorized.

The fallout was immediate. Publicly traded funds that marketed Anthropic share exposure plunged in value. Meanwhile, private brokers scrambled to reassess positions. Investors who had purchased Anthropic stock through the named platforms suddenly faced uncertainty about the legal standing of their shares.

However, the backlash was equally swift. Sim Desai, CEO of Hiive, one of the platforms later removed from the list, pushed back publicly on LinkedIn. Desai wrote that Anthropic never contacted Hiive before publishing the warning, and that the post caused confusion and reputational damage to his company. After Hiive’s removal, Desai called the original post damaging and unnecessary.

The timing raises serious questions. That same week, Anthropic announced a $65 billion funding round, valuing the company at $965 billion, surpassing rival OpenAI for the first time. In other words, the company simultaneously raised the largest private funding round in history while fighting over who could legally trade its shares.

The contradiction is structural. Anthropic needs secondary market liquidity to attract and retain employees who receive equity compensation. Yet it also needs to control share transfers to maintain governance and prepare for a potential IPO. According to The Next Web’s full coverage of the story, the original warning overshot on control and caused collateral damage to legitimate platforms. The four platforms that remain on the list have not publicly responded.