Anthropic vs OpenAI: Which is the Better Pre-IPO Stock to Buy as Perpetual Volumes Surge 6000x?

The Anthropic and OpenAI pre-IPO stocks are drawing buy-side pressure following the SpaceX IPO mania that saw $3.2 billion in perpetual futures volumes and $390 million in open interest between May 17 and June 11. The total volumes of pre-IPO futures have reached $12 billion in June 2026, a 6,000 times increase from the $2