Bitcoin ETF Weekly Inflow
U.S. Spot Bitcoin ETFs Salvage Weekly Inflows Following Massive Friday Surge
Anonymous
Key Points
1
Friday’s $433 million inflow was the strongest single-day intake for the U.S. spot Bitcoin ETF group since September 3, 2026, reversing most of the week’s earlier losses.
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Fidelity’s FBTC attracted approximately $310.7 million on Friday, accounting for more than 70% of that day’s net creations, while BlackRock’s IBIT added about $108.4 million; together, the two funds represented nearly 97% of Friday’s inflows.
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The week’s flow pattern was highly volatile: Monday brought roughly $160 million in creations, Tuesday and Wednesday saw combined redemptions of about $746 million, and Thursday recovered approximately $159.5 million before Friday’s surge.
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Despite the weekly gain, the funds’ $6.2 million net inflow was modest compared with the roughly $463 million withdrawn during the previous week, while funds other than IBIT and FBTC collectively lost more than $194 million over the five sessions.
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The ETF group’s approximately $102.5 billion in assets represented about 6.29% of Bitcoin’s total market capitalization after Friday’s trading.
U.S. spot Bitcoin ETFs finished the week of September 14–18, 2026, with a narrow $6.2 million net inflow CryptoNews, rebounding from heavy selling earlier in the week. Friday's $433 million surge in new investments — the strongest single day since September 3 — rescued the funds from an otherwise bleak five-day period marked by $746 million in withdrawals on Tuesday and Wednesday CryptoNews.
Fidelity's FBTC and BlackRock's IBIT dominated Friday's gains, combining for nearly 97% of inflows. The two mega-funds hold roughly $102.5 billion in combined assets — about 6.3% of Bitcoin's total market value — but smaller competitors bled more than $194 million during the week CryptoNews. Bitcoin's price stayed above the ETFs' estimated cost basis, a threshold some traders watch as a signal of market strength or weakness.
Friday's Fidelity Surge Saves the Week
Fidelity's FBTC led Friday's rebound with $310.7 million in new deposits, representing more than 70% of the day's total inflows CryptoNews. BlackRock's IBIT added $108.4 million in the same session CryptoNews. Together, these two funds powered a $433 million day — the strongest for the entire Bitcoin ETF group since September 3, 2026 AltcoinBuzz.
For the full week, IBIT accumulated roughly $121 million in net creations, the best performer among all Bitcoin ETF offerings CryptoNews. The dramatic Friday turnaround erased most of Monday's $160 million inflow and all of Tuesday–Wednesday's $746 million combined outflow, though smaller funds continued to lose assets throughout the period.
A Volatile Week Marked by Sharp Reversals
The five-day period swung wildly between gains and losses. Monday opened with $160 million in new creations, signaling early bullish sentiment CryptoNews. But Tuesday and Wednesday flipped that script entirely, triggering combined redemptions of $746 million as investors hit the exits CryptoNews. Thursday clawed back $159.5 million before Friday's climactic surge.
This week's $6.2 million net inflow stands in stark contrast to the prior week's $463 million outflow CryptoNews. The recovery was small by recent standards but marked a return to positive territory after two straight weeks of selling pressure. Ether ETFs, by contrast, ended a four-week inflow streak, signaling shifting investor interest between cryptocurrencies.
Technical Signals Flash Caution on Bitcoin Price
Bitcoin traded above the estimated average cost basis of U.S. spot Bitcoin ETFs — a level market watchers consider a potential turning point between bullish and bearish conditions CryptoNews. However, technical indicators painted a mixed picture. The Relative Strength Index (RSI) showed an overbought reading, suggesting Bitcoin may have rallied too far too fast.
Resistance levels near current prices could trigger a pullback before the next advance, analysts warned CryptoNews. The modest $6.2 million weekly inflow — despite Friday's strong intake — suggests institutional appetite remains cautious. Smaller Bitcoin ETF competitors outside IBIT and FBTC lost $194 million collectively, indicating consolidation around the two dominant players.
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