Anthropic filed yesterday for what could be the biggest IPO ever, capping a massive day of AI dealmaking that nearly equals 1% of U.S. GDP.

Why it matters: Few industries have ever become so central to the American economy so quickly — and we're watching Wall Street finance the buildout in real time.

Driving the news: Anthropic's long-awaited IPO may seek to raise a record $100 billion.

Also yesterday, SpaceX secured $40 billion in debt financing to lease GPUs — the chips that power modern AI — and Meta said it would seek up to $95 billion in financing for its AI buildout.

Together, that's roughly $235 billion in a single day — more than the entire U.S.…