Last Week in Venture 3/8/2026

AI Mega-Rounds, Liquid Private Markets, and Rising Macro and Regulatory Friction

OpenAI raised up to $110 billion last week. The pre-money valuation was reported at $730 billion. Amazon, Nvidia, and SoftBank were cornerstones. Those numbers are hard to hold in your head without losing their meaning, so try it this way: that single financing round is larger than the GDP of most countries. It rewrites what “private company” means.

And yet the rest of venture kept moving. A three-year-old AI startup quietly ran its first employee tender at a $4.5 billion valuation. An enterprise authentication company raised $100 million on infrastructure that nobody outside of enterprise software has ever heard of. A hardware company that makes optical interconnects for data centers closed $500 million to help chip makers stop frying their own power grids.

The week had a clear shape. Frontier AI is now financed like sovereign infrastructure. Everything else is reorganizing around the question of what happens after you deploy it.