Bitcoin ETF Inflows Fade as BTC Tests $81,300 ETF Cost Basis

A week that started strong and finished weak

US spot bitcoin exchange-traded funds started the week of October 19 with heavy buying and ended it with heavy selling. As a result, bitcoin is now trading at roughly the average price ETF holders paid for their exposure. Preliminary Farside data show about $1.07 billion entering the funds in the first three sessions, then $773.5 million leaving in the last two. That leaves a provisional net inflow of roughly $301 million for the week ending October 23.3 The early buying was concentrated. BlackRock's iShares Bitcoin Trust (IBIT) took in $665.2 million on Monday alone, its biggest single-day intake since October 2025.3

The selling came on Thursday, October 22. About $635.6 million left the funds that day, the largest daily withdrawal since June.25 IBIT lost $254.1 million, Fidelity's FBTC $217.5 million and ARK/21Shares' ARKB $109.4 million. Morgan Stanley's MSBT, which launched in April, was the only fund with new money, at about $2.3 million.25 Another $137.9 million left on Friday.3 Bitcoin dropped about 3.45% across those two sessions and briefly fell below $80,000 over the weekend before climbing back toward $80,600.3

The cost-basis line and why it matters

The outflows matter because of where the price now sits. Coinbase Institutional calls $80,000 to $82,000 a key support zone. Two reference points sit inside that range: an estimated $81,300 average cost basis for ETF holders and a 50-day moving average near $81,700.37 Coinbase warns that a sustained break below the zone could expose bitcoin to a drop toward $73,000–$75,000.3

The idea behind the level is behavioural. When the price is above the average entry, the typical ETF holder has a small gain. Below it, many are losing money and some may sell rather than wait.3 Glassnode uses the same logic but a slightly different number. It puts the ETF cost basis near $81,500 and the average cost for corporate bitcoin treasuries near $80,200.5 Its next downside marker is the "True Market Mean" near $77,600. On the upside, it sees heavy selling interest between $85,000 and $87,500.6

The $200 gap between the Coinbase and Glassnode estimates is small. A more useful comparison is with late September, when one analysis put the ETF holder cost basis at $81,722. At that point the typical fund investor had just returned to profit for the first time since January, as bitcoin reclaimed $84,000.10 Our reading: the estimates differ on the exact figure, but they all place the break-even point around $81,000–$82,000, and bitcoin has been moving in and out of that band for weeks without a clear direction.

Where the numbers diverge

Reports on the week's flows differ more than usual, so readers should check which data set each headline uses. The Block put the week's net inflow at $442.7 million. That figure covers only Monday through Thursday.25 Farside's full-week number, which includes Friday's outflow, is about $301 million.3 One syndicated report described the same week as $442.62 million in net outflows.29 Since daily figures from several trackers show net buying over the period, that looks like a reversed sign rather than a real difference.253

Monthly totals also vary. Farside-based figures show October about $313.5 million in net outflows so far.3 A TFTC tally through October 22 had the month at roughly –$174.5 million.23 Earlier in the month, TFTC had shown about –$540 million, and a Farside-based count for October 1–15 came to about –$532 million.2124 Estimates of cumulative inflows since launch also differ: The Block cites more than $57 billion, while a SoSoValue-sourced figure from earlier in October put it at $61.23 billion.2530 What the trackers do agree on: October is negative, the selling is uneven rather than steady, and the month's outflows are small compared with total assets of roughly $100 billion or more.2125

Who is buying now

The flows matter more for price because of who else has stopped buying. Coinbase Institutional notes that corporate treasuries bought about $14.5 billion of bitcoin in the first half of 2026, while spot ETFs saw nearly $5 billion of net selling. Since August that has reversed: ETFs have drawn about $6.4 billion and corporate treasuries about $1.5 billion.3 Glassnode says corporate treasury buying since June has run at less than 10% of its November 2024 peak. It also says average spot ETF trading volume is below a quarter of what it was a year ago.6

Strategy, the largest corporate holder, illustrates the shift. Its October 26 filing showed it bought no bitcoin in the week of October 19–25. Instead it spent $204.9 million buying back STRC preferred shares, which cut its USD Cash balance by about 46% to $242.4 million.34 Since October began, the company has spent about $664 million repurchasing STRC and $72.3 million on 851 BTC.34 Its holdings remain at 848,517 BTC, at an average cost of $75,446 per coin.36 Analysts have tied the slowdown to a narrower premium of the company's market value over its bitcoin holdings (mNAV). BitMEX Research estimates that premium at about 1.1x, down from nearly 3x in 2024, which limits how much bitcoin Strategy can fund by selling shares without diluting existing holders.32

Coverage differs on how much weight to give the pause. Several outlets describe it as a one-week allocation choice, not the end of Strategy's buying, and point out that the filing announced no broader suspension.3836 Others see a trend: buybacks now consistently outweigh bitcoin purchases, and the board recently raised the repurchase ceiling to $3 billion.37 We think the second reading is more convincing. Whatever Strategy's long-term intent, its cash is currently going to support its preferred stock, not to buy bitcoin. Larger investors are partly filling the gap. Santiment data show wallets holding 10 to 10,000 BTC accumulated nearly 89,000 BTC between mid-September and mid-October.37 Still, regular ETF creations are now the most visible source of steady demand, so swings in ETF flows carry more weight than they did earlier in the year.3

Regulation is not offering support

Policy is unlikely to bring new buyers soon. On September 15 the Senate failed to advance the CLARITY Act, the crypto market-structure bill, in a 49–50 cloture vote, well short of the 60 votes needed.11 The bill stalled mainly over ethics provisions on officials' crypto holdings and over stablecoin yield, which banks fear could pull deposits away from them. The core question of how to split oversight between the SEC and the CFTC was not the main obstacle.1116 Senator Tillis voted no in order to keep a motion to reconsider available. But with the midterms shortening the calendar, passage in this Congress is widely seen as unlikely, and the bill would probably have to be reintroduced in 2027.1115

The agencies are moving ahead without Congress. On October 5 the CFTC published an advance notice of proposed rulemaking on retail crypto trading and a new category of crypto exchange.15 The SEC's proposed Regulation Crypto Assets, which includes registration exemptions and a conditional safe harbor, closed for comments on October 20.15 House Financial Services Chair French Hill has argued that agency rules cannot replace a law.14 Practitioners make a similar point: rules set by agencies are easier for future commissions to change than a statute.15

This matters for flows because institutions tend to commit more capital when rules are durable, and durable rules have now slipped into next year. The bill's provisions with the broadest support in both chambers are classifying bitcoin and ether as commodities and requiring segregation of customer assets.16 Neither is likely to become law before 2027.

What to watch

The market faces several near-term tests. The Federal Reserve's rate decision is due October 28.9 Inflation data have pushed hawkish expectations higher: US producer prices rose 1.3% in September, the biggest monthly gain since March 2022, and markets have raised the odds of a December rate hike.3 Strategy reports third-quarter results on October 29, and its comments on funding and buybacks may matter more to the market than its headline profit.31

Our reading is that the past week was a failed test of demand, not a turning point. Inflows of more than $1 billion did little to lift the price, and two days of selling pushed bitcoin to the ETF break-even line.3 If bitcoin closes back above $81,300–$82,000 and inflows resume, the selling looks like a pause. If outflows continue while the price stays below that band, it would suggest ETF holders are cutting losses, and the $73,000–$75,000 range Coinbase flagged would be the next area to watch.3