Bitcoin ETFs bleed $630M in a single day as corporate treasury buyers vanish and resistance mounts!

U.S. spot bitcoin ETFs recorded $630.4 million in net outflows on May 13 — the steepest single-day drain since mid-February — as analysts warn the current rally is running on fumes rather than conviction. Corporate treasury buyers, who had been a meaningful pillar of institutional demand, have effectively stepped back, with purchase volume down 80% compared to last month.

With that cohort sidelined, ETFs are now the primary remaining institutional demand channel, and even that is showing cracks. The combination of heavy outflows and fading corporate appetite at a technical resistance level raises a pointed question: if the bid isn't structural, what is sustaining the price?

For investors watching macro flows, the setup is a cautionary one. A rally that sheds $630 million from its most visible institutional wrapper in a single session — without a clear catalyst — is a signal worth…