US spot Bitcoin ETFs took in $526.6 million in net inflows on Monday, Oct. 19 — the largest single-day haul since Sept. 22, when the funds pulled in $714.75 million. All of it came from one fund: BlackRock's iShares Bitcoin Trust. The other 11 Bitcoin ETFs recorded zero net inflows on the day.
The inflow cut the month's net outflow to $90.57 million. Before Monday, October had seen $617.17 million leave Bitcoin ETFs, and the prior week (Oct. 13–16) had closed with $163.18 million in net outflows.
One fund did all the buying
The lopsided split is the detail worth sitting with. Twelve Bitcoin ETFs trade in the US, and on Monday only IBIT saw fresh money. The rest were flat. It's not a broad rotation back into the asset class — it's one giant fund absorbing demand while its peers sit idle.
That pattern has held before, and it's part of why IBIT's flows get watched so closely as a proxy for institutional appetite. When BlackRock's fund moves, it usually moves alone.
Ethereum keeps bleeding
The picture on the Ethereum side is the mirror image. ETH ETFs lost $103.28 million on Monday, and 14 of the last 15 trading days have seen net outflows — $1.12 billion in total over that stretch.
Solana ETFs also slipped, giving back $6.72 million on the day. There's no sign of a rotation out of Bitcoin into the altcoin funds. The money is simply leaving.
Bitcoin holds $80K while tech sells off
Bitcoin closed the week down about 2% and held the $80,000 level, even as the Nasdaq dropped 5% and the semiconductor index fell more than 11%. That's a notable divergence — equities took the harder hit and crypto held its ground.
At press time Bitcoin traded at $82,060, down 0.44% over 24 hours. The coin is now back above its ETF cost basis of roughly $81,500, according to Glassnode, after slipping below it last week. It has also closed above its 50-week moving average near $76,100 for five straight weeks.
Since Oct. 1, Bitcoin is down 1.75%, following a 42.71% gain in the third quarter. Not a disaster, not a breakout either.
Levels traders are watching
Analyst Ash Crypto lists $80,000 and $76,000 as support, with $84,000 and $87,500 as the upside levels to clear.
Glassnode has a slightly higher bar in mind: $88,000 is the cost basis for buyers who entered six to 12 months ago. A daily close above that level — paired with renewed ETF inflows — would signal that the market has absorbed the supply sitting overhead.
The immediate test is whether Monday's IBIT-led inflow is a one-day event or the start of a trend. The next few trading sessions will show if the other 11 Bitcoin ETFs start participating, or if BlackRock keeps carrying the flows by itself.
