Seven Days of Steady ETF Gains
U.S. spot Bitcoin exchange-traded funds (ETFs) have recorded a remarkable seven-day inflow streak, pulling in nearly $3 billion since September 17. The latest data shows $134.
The reversal has not only erased those losses but also pushed year-to-date net flows back into positive territory for 2026. According to Decrypt, cumulative net inflows since the launch of these funds now total $58 billion, with total net assets reaching $108.42 billion as Bitcoin trades around $84,020.
From Red to Green in 2026
It’s a sharp contrast to just two months ago, when net flows for Bitcoin ETFs were roughly $5.8 billion in the red for the year—a sign of how quickly sentiment can shift in crypto markets.
On September 21, Bitcoin ETFs saw nearly $1 billion in inflows, their strongest single-day performance since October 2025.
This week alone brought in a record-setting $2.4 billion, the largest weekly inflow since October of last year. That single week tipped the balance for 2026, taking net flows from negative to positive for the first time this year. On Monday, nearly $1 billion was invested in Bitcoin ETF shares—the highest daily figure since October 2025—while Friday saw another strong day with almost $300 million added.
The scale of this rebound stands out even more given that just one week earlier, ETF investors were still underwater for the year.
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Cost Basis Hits Yearly High
As inflows surged, so did the average cost basis for ETF holders—now estimated at $81,722 per coin according to Bloomberg analyst James Seyffart. This is the highest level seen since January and reflects both new buying at higher prices and the resilience of existing investors through recent volatility. Over the past seven days, Bitcoin’s price has climbed by nearly 4%, reaching an intraday high near $87,000 before settling back to around $83,600 on Friday.
However, this upward momentum has not come without challenges. Friday also saw a major options expiry event on Deribit worth $15.6 billion, which contributed to a brief pullback and drove liquidations totalling over $318 million across long and short positions combined.
Biggest Inflows Since Last October
The current streak marks the most substantial influx into Bitcoin ETFs since October 2025—a period that also saw dramatic price action and record-breaking liquidations across crypto markets. Back then, Bitcoin reached its all-time high of $126,080 on October 6 and more than $19 billion in leveraged bets were wiped out during one historic trading session.
While this week's ETF inflows are reminiscent of last year’s exuberance, there is a notable difference: investor activity now appears more measured despite large sums entering the market. Open interest and trading volume both fell sharply following Friday’s expiry event—down over 14% and 13% respectively—suggesting some investors may be taking profits or reducing risk after recent gains.
Yet even as short-term volatility remains high, total assets held by U.S.-listed Bitcoin ETFs have soared past $100 billion—a milestone rarely seen outside peak bull market conditions.
Why It Matters
For everyday investors and institutions alike, these inflows signal renewed confidence in regulated exposure to Bitcoin through traditional financial products. The fact that net flows have swung from deeply negative to solidly positive within weeks highlights both how quickly market mood can shift—and how sensitive ETFs are to macro events like Senate votes or Federal Reserve rate hikes (the latter raised rates by 25 basis points on September 16).
Drawing from our proprietary data as of September 27: Bitcoin is currently priced at $84,499 with negligible movement over both daily (+0.01%) and weekly (+0.05%) periods—an indication that while ETF activity is robust, spot prices remain relatively stable after last week’s highs near $87,330. The market cap remains firmly ranked #1 among cryptocurrencies despite these fluctuations.
Still, there’s an important nuance: while headline numbers show billions flowing into ETFs and asset totals crossing major thresholds, overall crypto market capitalization has actually dipped below $3 trillion this week—a reminder that sector-wide enthusiasm is not evenly distributed across all tokens or products.
Signals yet to emerge
If U.S. spot Bitcoin ETFs extend their inflow streak beyond the current seven consecutive trading days that began on September 17, surpassing the $2.98 billion pulled in so far, it would immediately confirm sustained investor demand; however, whether this momentum continues after the $15.6 billion Bitcoin options expiry on Friday remains unclear.