Bitcoin ETFs Post $606 Million Inflow, Biggest Since May 1

U.S. spot Bitcoin ETFs pulled in $606.29 million on Thursday, their biggest single-day haul since May 1, according to SoSoValue data reported by Decrypt on August 21, 2026. The inflow beat Wednesday's $517.19 million and extended the streak to four positive sessions. BlackRock's IBIT collected $502.99 million, roughly 83 cents of every dollar that entered the category. Fidelity's FBTC took $64.74 million, Bitwise's BITB $26.4 million and Ark and 21Shares' ARKB $12.2 million, while VanEck's HODL shed $3.59 million. The four-day run totaled roughly $1.61 billion, and August now stands at $2.07 billion, the best month of 2026.

Background

Bitcoin ETFs are financial instruments that give investors exposure to an asset without directly owning it. In the case of Bitcoin ETFs, the issuer of the fund holds the coin, and the investor owns a 1:1 equivalent, gaining exposure to the price of Bitcoin in real time, according to Decrypt. These funds have been extremely popular among investors since they launched in early 2024, with the biggest fund issuer of them all, the $15 trillion asset manager BlackRock, as the primary beneficiary. The latest flow data arrives during Bitcoin's best week since 2023. Bitcoin traded around $77,000 Friday after challenging $80,000 overnight and touching roughly $79,400, Decrypt reported. It cleared $69,000 Wednesday and $72,000 Thursday and is up about 24% since Monday, while still sitting some 38% below the record above $126,000 set in October 2025. The run has not yet flipped the chart: Bitcoin's death cross has held since November 16, 2025, and while price has climbed back above the 200-day simple moving average at $69,005, the 50-day sits at $63,976. It needs to cover roughly $5,000 more before a golden cross completes.

What happened

According to Decrypt, citing SoSoValue, U.S. spot Bitcoin ETFs pulled in $606.29 million on Thursday, their biggest single-day haul since May 1. That beat Wednesday's $517.19 million and extended the inflow streak to four sessions. The four-day run comprised $297.56 million Monday, $189.30 million Tuesday, then Wednesday and Thursday, coming to roughly $1.61 billion in all. August now stands at $2.07 billion, the best month of 2026, beating April's $1.97 billion, with seven trading sessions left to close the gap. BlackRock's IBIT collected $502.99 million on Thursday, roughly 83 cents of every dollar that entered the category. Fidelity's FBTC took $64.74 million, Bitwise's BITB $26.4 million and Ark and 21Shares' ARKB $12.2 million. VanEck's HODL went the other way, shedding $3.59 million. Compare that to Wednesday, when IBIT's share was 55% and eight of 12 funds finished positive with none in the red. A day later the total was bigger and the distribution was narrower. Across the four sessions, IBIT alone accounted for about $1.09 billion of the $1.61 billion, closer to the pattern from earlier this month, when the funds drew $853.5 million over five days and roughly 80% arrived through IBIT. Ethereum ETFs added almost $221 million, their largest single-day intake since October 2025, also a fourth consecutive positive session. XRP funds took $13 million against $2.35 million on Wednesday, and Solana funds took $15 million against $2.10 million. Every listed asset drew inflows, including Hyperliquid's product, which had been the lone outflow a day earlier. On Wednesday, Bitcoin funds collected one dollar for every $220 that reached XRP funds; on Thursday that gap closed to about 47 to one.

Market impact

The flow figures reported by Decrypt show Bitcoin ETFs collecting $606.29 million on Thursday, with BlackRock's IBIT taking $502.99 million, or roughly 83% of the day's total. Fidelity's FBTC added $64.74 million, Bitwise's BITB $26.4 million and Ark and 21Shares' ARKB $12.2 million, while VanEck's HODL lost $3.59 million. The four-session streak totaled roughly $1.61 billion, of which IBIT accounted for about $1.09 billion. August's $2.07 billion is the best month of 2026, ahead of April's $1.97 billion. Ethereum ETFs added almost $221 million, their largest single-day intake since October 2025. XRP funds took $13 million versus $2.35 million on Wednesday, and Solana funds took $15 million versus $2.10 million. In price terms, Bitcoin traded around $77,000 Friday after touching roughly $79,400 overnight, cleared $69,000 Wednesday and $72,000 Thursday, and is up about 24% since Monday, its best week since 2023, while still some 38% below the record above $126,000 set in October 2025. Ethereum changed hands near $2,357 and XRP around $1.38, extending what was already its best week since the 2024 election pump to a roughly 38% gain. The move began with the Treasury's decision to at least double long-end bond buybacks, then accelerated through a squeeze that liquidated $3 billion in shorts, according to Decrypt.

Why it matters

The concentration of inflows in BlackRock's IBIT, which took roughly 83 cents of every dollar on Thursday and about $1.09 billion of the four-day $1.61 billion, illustrates the scale advantage of the largest issuer. Decrypt reports that this squeeze claimed a fund this month: Hashdex shut its DEFI Bitcoin ETF, the first U.S. spot Bitcoin fund ever liquidated, with a final trading day of August 17. It charged the same 0.25% as IBIT but held $14.7 million against IBIT's $47 billion, throwing off roughly $26,000 a year in fees, not enough to run a fund. Anyone who held past the 17th lost their exchange exit and is owed a cash payment at net asset value instead, dated either August 24 or August 28 depending on which Hashdex filing you read, minus closing costs and adjusted for whatever Bitcoin does while the fund sells its remaining 225 coins. That sale is happening during Bitcoin's best week since 2023. The broadening across assets, with Ethereum ETFs adding almost $221 million and every listed asset drawing inflows, alongside the narrowing within Bitcoin, suggests flows are becoming more selective even as the category grows.