U.S. spot Bitcoin exchange-traded funds recorded $528 million in net inflows yesterday, marking one of the largest single-day injections since the products launched in January. Weekly net inflows have now surpassed $1.2 billion.

The capital surge coincided with Bitcoin testing a critical resistance level. On-chain analytics from Glassnode show long-term holders—wallets holding Bitcoin for over six months—increased balances by 0.8 percent in the last 24 hours. The Crypto Fear & Greed Index stands at 68, in "Greed" territory.

Each dollar flowing into these ETFs requires the purchase of Bitcoin from the open market, removing coins from exchange liquidity. This structural dynamic tightens supply as institutional buy pressure meets a finite pool of available Bitcoin.

BlackRock's IBIT and Fidelity's FBTC lead among the eleven approved U.S. spot Bitcoin ETFs in daily net new assets, becoming the primary conduit for large-scale institutional capital into crypto.