US Bitcoin ETFs: Longest Inflow Streak Sends Funds Near 7% of BTC Supply

Bitcoin’s been getting a little love from U.S. spot ETFs — enough that the funds are on their longest streak of inflows this year, and the pile of assets parked in these products now equals a noticeable slice of the whole Bitcoin market.

ETF inflow streak: who’s piling in?

Over nine straight trading days through April 24, U.S. spot Bitcoin ETFs recorded net inflows, adding roughly $2.12 billion since April 14. That’s the most sustained run of positive flows since last October, and it’s showing up in the broader market: Bitcoin has been trading near the high $70k range after a solid month of gains.

Big-name ETF vehicles did most of the heavy lifting. BlackRock’s iShares product led the charge, taking in about $1.6 billion during the recent stretch. Morgan Stanley’s fund chipped in roughly $115 million and Grayscale’s ETF added north of $73 million. Together these moves pushed total net assets in U.S. spot Bitcoin ETFs to around $101 billion — about 6.57% of Bitcoin’s market capitalization.

Why the $80,000 area and flows matter

Numbers around $80,000 have become an important psychological and technical marker. Cost-basis estimates show the aggregate entry price for recent ETF buyers sits near $81,000. One of the largest funds has an average buy price close to $80,200, while some smaller or earlier entrants have lower bases around the mid-$50k to $60k range. In short: a lot of ETF holders are near breakeven as Bitcoin noses up toward $80k.

Macro commentators tracking fund flows note that 30-day rolling inflows have turned positive again, signaling capital is circling back. But the size of the inflows still hasn’t hit the level many models consider a clear-cut market breaker — one commonly cited benchmark is roughly 50,000 BTC in net inflows over 30 days to swing odds decisively toward a sustained rally.

Translation: ETFs are giving Bitcoin a firmer floor than the prior pullback did, but the rally isn’t yet guaranteed. If price clears the $80k zone with steady flows, newer investors hitting breakeven could cement confidence; if it gets rejected, expect some profit-taking and tactical hedging. Keep an eye on the flow totals — they’re the secret ingredient determining whether this party is a one-night stand or the start of something longer.