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Nvidia CEO Jensen Huang talks to members of the press as he leaves the Hart Senate Office Building on July 28. Photo: Finn Gomez/Getty Images

Nvidia and a group of blue-chip Wall Street firms are collaborating to provide a half-trillion-dollar bankroll to the AI chipmaker's customers.

Why it matters: The gargantuan financing package illustrates the mushrooming scope and costs of the infrastructure needed to keep the AI economy humming.