Bitcoin ETFs Just Had Their Biggest Day Since May—BlackRock Took 83% of It

U.S. spot Bitcoin ETFs pulled in $606.29 million on Thursday, their biggest single-day haul since May 1, according to SoSoValue. The inflow extended a four-session streak that began with $297.56 million on Monday and $189.30 million on Tuesday, followed by Wednesday's $517.19 million, for roughly $1.61 billion across the run. BlackRock's IBIT collected $502.99 million of Thursday's total, 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. August now stands at $2.07 billion, the best month of 2026, according to the report.

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. 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 sources describe a pattern earlier this month in which the funds drew $853.5 million over five days and roughly 80% arrived through IBIT, a concentration that Thursday's session echoed. The report also notes that the squeeze in flows is not abstract and claimed a fund this month: Hashdex shut its DEFI Bitcoin ETF, the first US 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.

What happened

According to 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—$297.56 million Monday, $189.30 million Tuesday, then Wednesday and Thursday—comes 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. 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. 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

Bitcoin traded around $77,000 Friday after challenging $80,000 overnight and touching roughly $79,400, according to the report. It cleared $69,000 Wednesday and $72,000 Thursday, and is up about 24% since Monday—its best week since 2023—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, the inverse of the bearish death cross, completes. Ethereum changed hands near $2,357 and XRP around $1.38, extending what was already its best week for the Ripple-linked token 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 the source. On the fund side, Ethereum ETFs added almost $221 million, their largest single-day intake since October 2025, while XRP funds took $13 million and Solana funds $15 million. Hashdex's DEFI Bitcoin ETF, which held $14.7 million against IBIT's $47 billion, was liquidated with a final trading day of August 17.

Why it matters

The sources support several consequences. First, the concentration of flows in IBIT means the category's headline numbers increasingly reflect one issuer: across the four sessions, IBIT alone accounted for about $1.09 billion of the $1.61 billion, and on Thursday it took roughly 83 cents of every dollar. Second, the Hashdex liquidation shows that scale matters: a fund charging the same 0.25% as IBIT but holding $14.7 million against IBIT's $47 billion threw off roughly $26,000 a year in fees—not enough to run a fund—and holders past August 17 lost their exchange exit, 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. Third, the broadening across assets—Ethereum ETFs' largest single-day intake since October 2025, XRP funds at $13 million and Solana funds at $15 million—suggests money is moving across listed assets even as it narrows within Bitcoin. Fourth, the price backdrop remains mixed: Bitcoin is up about 24% since Monday, its best week since 2023, yet still some 38% below the record above $126,000 set in October 2025, and its death cross has held since November 16, 2025.