Three AI-era giants tower over 45 years of tech IPOs

[Glass brain with connectors] Jonathan Kitchen Three AI-era giants have amassed valuations that tower over the combined first-day value of thousands of U.S. tech companies that went public over the past 45 years. OpenAI (OPENAI [https://seekingalpha.com/symbol/OPENAI]), Anthropic (ANTHRO [https://seekingalpha.com/symbol/ANTHRO]), and SpaceX (SPCX [https://seekingalpha.com/symbol/SPCX]) were valued at a combined $5.2T, compared with $4.1T for 3,365 U.S. technology IPOs between 1980 and 2025, according to a chart shared by Jason on X. The three-company figure comprised $2T for SpaceX, $2T for Anthropic, and $1.2T for OpenAI.