Key Insights
- Bitcoin ETF inflows topped $1.7 billion across two sessions.
- BTC price recovered above the average ETF investor cost basis.
- Four consecutive inflow sessions reversed mid-September fund withdrawals.
U.S. spot Bitcoin ETF inflows surpassed $1.7 billion over two consecutive sessions as the price of BTC stayed above $86,000, signaling a rebound in institutional demand following mid-September outflows.
According to SoSoValue metrics, the funds secured $998.95 million on Sept. 21 and an additional $714.75 million on Sept. 22, elevating the two-day aggregate to roughly $1.714 billion.
This upward momentum pushed Bitcoin past the estimated average acquisition price for U.S. spot ETF participants. James Seyffart, an analyst at Bloomberg Intelligence, pegged this average cost basis close to $81,722 per BTC.
Bitcoin ETF Inflows Accelerate as BTC Price Recovers
Data from SoSoValue revealed that spot Bitcoin funds drew about $715 million on Sept. 22, following roughly $999 million on Sept. 21—marking the highest single-day intake seen in 2026.
Combined, the two-day total surpassed $1.7 billion, while total net assets across all U.S. spot Bitcoin ETFs climbed to approximately $111 billion by Tuesday.
BlackRock’s iShares product kept its position as the largest U.S. spot Bitcoin fund based on assets, with BlackRock reporting IBIT assets near $67.9 billion in its latest data table.
Due to this massive scale, delayed reporting from individual issuers can heavily skew early daily flow estimates, accounting for discrepancies between preliminary fund-specific tallies and final aggregate numbers.
Figures from Glassnode’s ETF balance tracker indicated that IBIT holds more Bitcoin than any rival U.S. spot vehicle, with Fidelity’s FBTC securing the second spot among major funds.
Because assets are concentrated in these vehicles, BlackRock and Fidelity heavily dictate daily flow trends, meaning substantial subscriptions or redemptions can skew overall Bitcoin ETF measurements.
Data from Farside Investors showed that Fidelity’s Wise Origin Bitcoin Fund pulled in $257.4 million on Sept. 22, while Grayscale’s Bitcoin Mini Trust brought in $99 million.
Farside’s published figures indicated $364.4 million for Tuesday because BlackRock’s IBIT entry was left blank initially, though SoSoValue’s subsequent aggregate tally captured the higher daily total.
This reversal came on the heels of two substantial withdrawal days earlier in the month, where Farside tracked $450.4 million leaving the funds on Sept. 15 and $295.9 million on Sept. 16.
Bitcoin ETF Cost Basis Returns Below Spot Price
Bloomberg Intelligence analyst James Seyffart noted that average ETF participants moved back into profitable territory on Monday, calculating their combined Bitcoin cost basis at $81,722 per coin.
The price of BTC remained above that benchmark throughout Tuesday and Wednesday, with CoinGecko logging a close near $86,183 on Sept. 22.
During Wednesday’s trading session, Bitcoin briefly crossed $87,000 before pulling back slightly. CoinGlass later pegged BTC at roughly $86,420, reflecting a 24-hour gain of about 0.9%.
This upward movement carried Bitcoin past a resistance barrier previously highlighted by Glassnode, whose Sept. 9 market report placed institutional break-between thresholds from $83,000 to $86,000.
Glassnode reported that distribution by long-term holders into that price region had slowed down, with selling pressure dropping to less than half of August’s rate.
Consequently, the price surge drove Bitcoin past a threshold where several investor segments previously neared break-even, keeping recent ETF purchasers in the green by staying above this range.
BTC Price Faces Higher Derivatives Exposure
Derivatives trading activity picked up alongside the spot-market recovery. Figures from CoinGlass indicated that Bitcoin futures open interest sat close to $61.31 billion on Wednesday.
The same figures indicated approximately $72.27 billion in 24-hour futures trading volume, whereas spot volume across monitored exchanges hovered near $5.68 billion.
Elevated open interest can magnify price volatility when leveraged contracts accumulate rapidly, though it does not provide directional clues on its own.
Futures metrics also captured Bitcoin trading near $86,420 during the session, maintaining a BTC price above the upper bounds of Glassnode’s earlier resistance zone.
Meanwhile, demand for ETFs delivered an independent bullish signal in the spot market, marking four successive days of positive inflows following the redemptions on Sept. 15 and Sept. 16.
Across Sept. 17, Sept. 18, Sept. 21, and Sept. 22, published totals from Farside exceeded $1.95 billion, even with Tuesday’s figure omitting BlackRock’s unlisted entry.
Bitcoin ETF Flows Put $87,000 Back in Focus
The next market milestone centers around Wednesday’s intraday push above $87,000. A definitive, sustained breakout would cement the BTC price well above Glassnode’s institutional break-even corridor.
Market participants will also monitor upcoming U.S. Bitcoin ETF flow updates, as another positive session would prolong the current streak of inflows.
Farside updates fund-specific flows after issuers release daily metrics, while SoSoValue monitors aggregate net flows across all U.S. spot investment vehicles.
As for the price of BTC, the $83,000 to $86,000 bracket continues to serve as the primary institutional cost-basis zone, with Wednesday’s trading keeping Bitcoin comfortably above the majority of that band.
This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and ETF investments involve market risk.
FAQ
- How much did Bitcoin ETFs inflow recently?
U.S. spot Bitcoin ETFs hauled in more than $1.7 billion across two sessions, driven by $998.95 million on Sept. 21 and $714.75 million on Sept. 22. - What is the average ETF investor cost basis?
Bloomberg Intelligence analyst James Seyffart estimated the aggregate Bitcoin cost basis for ETF investors is roughly $81,722 per coin. - Which fund holds the most Bitcoin among ETFs?
BlackRock’s iShares product (IBIT) holds more Bitcoin than any competing U.S. spot product, with assets valued near $67.9 billion. - What was the trading price of Bitcoin during the surge?
Bitcoin stayed above $86,000, reaching a CoinGecko close near $86,183 on Sept. 22 and briefly topping $87,000 during Wednesday trading.
