U.S. spot Bitcoin ETFs pulled in $606.29 million on Thursday, August 20, their largest single-day haul since May 1, according to SoSoValue. The intake beat Wednesday's $517.19 million and extended the current inflow streak to four sessions.

The four-day run—$297.56 million on Monday, $189.30 million on Tuesday, then Wednesday and Thursday—adds up to roughly $1.61 billion in all. August now stands at $2.07 billion, the best month of 2026 so far, ahead of April's $1.97 billion, with seven trading sessions still remaining in the month.

One fund took almost all of it

Bitcoin ETFs are financial instruments that give investors exposure to an asset without owning it directly: 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. That wrapper opened the asset to brokerage and advisory channels that previously had no direct way to hold it, and because creations and redemptions are published every day, the funds have become one of the few real-time windows into demand for Bitcoin. The funds have been extremely popular among investors since launching in early 2024, with the biggest issuer of them all—the $15 trillion asset manager BlackRock—as the primary beneficiary.

Adding to its already monster total, 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 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. Concentration of that kind mirrors the wider ETF industry, where the largest funds trade with the tightest spreads and lowest costs and tend to gather the most assets, while small products struggle to cover their fixed costs.

The altcoin funds finally turned up

Ethereum ETFs added almost $221 million, their largest single-day intake since October 2025 and a fourth consecutive positive session. The smaller products moved hardest in percentage terms: 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; by Thursday that gap had closed to about 47 to one. The money broadened across assets and narrowed within Bitcoin at the same time.

That squeeze is not abstract, and it 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% fee 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; they are owed a cash payment at net asset value instead, dated either August 24 or August 28 depending on which Hashdex filing is consulted, 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.

Price ran ahead of the flows

Bitcoin traded around $77,000 on Friday after challenging $80,000 overnight and touching roughly $79,400. It cleared $69,000 on Wednesday and $72,000 on 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—the bearish signal that appears when the 50-day moving average falls below the 200-day—has held since November 16, 2025. While price has climbed back above the 200-day simple moving average at $69,005, the 50-day sits at $63,976, meaning Bitcoin 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 the Ripple-linked token's 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—a program in which the Treasury repurchases older bonds to support liquidity in the government-securities market—then accelerated through a squeeze that liquidated $3 billion in short positions in 24 hours, with another $1 billion wiped out Friday.

Bitcoin ETF net assets closed Thursday at $90.16 billion, equal to 6.18% of Bitcoin's market capitalization at that point, with cumulative net inflows of $53.40 billion since the funds began trading on January 11, 2024, per SoSoValue. Value traded across the sector reached $5.41 billion on the day. The expanded buyback program takes effect September 9 and runs through November 4, when Treasury sets sizes for the following quarter at its next quarterly refunding.