Anthropic shares now require a minimum $25 million investment in the secondary market, significantly higher than OpenAI's $1 million threshold, according to fortune.com. This reflects strong demand for Anthropic ahead of its anticipated IPO. Since early 2026, interest in Anthropic has surged, with about $1.5 billion in bids recorded in the second quarter alone, highlighting intense investor appetite.
The secondary market for Anthropic shares has been tightly controlled, with the company limiting access to its cap table. Javier Avalos, CEO of private markets platform Caplight, noted that Anthropic has been the most sought-after name in the secondary market for about a year. Clara Vydyanath, general partner at Underline Capital, explained that many general partners have warehoused positions and are now selling large blocks of shares, sometimes worth $20 million to $100 million, in piecemeal fashion.
This high entry point contrasts with OpenAI, where the minimum investment is closer to $1 million, underscoring Anthropic's elevated market valuation and investor enthusiasm. The $65 billion fundraise earlier this year further cemented Anthropic's position as a leading AI company. The secondary market activity signals strong confidence in Anthropic's growth prospects compared to its peers, reflecting broader trends in AI funding and valuations.
Anthropic's valuation and secondary market demand place it among the most closely watched companies ahead of its IPO. The company’s selective approach to share sales and the substantial minimum investment required have created a premium market for its shares, according to fortune.com.