Bitcoin surged $14,775 in the week of Aug 17-23, rising from $62,818 to $77,593 (a 23.5% move) — the biggest one-week dollar gain on record — coinciding with US spot Bitcoin ETF inflows at their strongest weekly level since October 2025 as August nears the largest monthly net inflow since the prior all-time high. Galaxy Research links the rally to the US Treasury doubling long-bond buybacks, President Trump's push for the CLARITY Act and a short squeeze that liquidated roughly $2.7 billion in crypto positions, but ETF holders remain about 6% underwater with an average cost basis of $84,029 versus a spot near $78,955, so continued price upside depends on sustained ETF inflows and regulatory clarity.

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In Brief

Bitcoin (BTC) gained $14,775 in a week, the biggest dollar move ever.
The rally lifted BTC from $62,818 to $77,593 between August 17 and 23.
US spot Bitcoin ETFs logged their largest weekly inflow since October 2025.

Bitcoin (BTC) gained $14,775 in a single week, the largest one-week dollar increase in its history. Galaxy Research says the rally also drove the strongest US spot Bitcoin ETF inflow week since October 2025.

The weekly close jumped from $62,818 to $77,593, a 23.5% move ranked 41st by percentage increase since 2010. By percentage increase, it was Bitcoin’s best week since March 2023.

What Drove Bitcoin’s Record Week

Galaxy Research linked the rally to two catalysts. The US Treasury said it would double its long-bond buyback operations, used to ease pressure on Treasury yields.

Last week's BTCUSD weekly candle was the single largest weekly gain by dollar amount in Bitcoin history. By percentage, it was the 41st biggest weekly gain in history (+23.5%) and the biggest since March 2023. pic.twitter.com/tF17RTM0mA
— Galaxy Research (@glxyresearch) August 27, 2026

President Trump also urged Congress to pass the CLARITY Act. The bill would set federal rules for classifying digital assets as securities or commodities.

The move also triggered a short squeeze. Traders who had bet against Bitcoin were forced to close positions, accelerating Bitcoin’s fastest bull flip in a year.

Roughly $2.7 billion in short positions were liquidated across crypto markets that week, according to CNBC.

Sentiment also swung sharply. The Crypto Fear and Greed Index reached 74 on August 25, its highest level since October 2025.

ETF Inflows Confirm the Rebound

Spot Bitcoin ETF demand returned at the same time. Weekly inflows reached their strongest level since October 2025, Galaxy Research data shows.

Last week was the biggest Bitcoin ETF inflow since October 2025. pic.twitter.com/vGXwJa0DT9
— Galaxy Research (@glxyresearch) August 27, 2026

August is on track to post the biggest monthly net inflow since Bitcoin’s prior all-time high. That would reverse months of ETF outflows that left the funds as net sellers in 2026.

ETF holders remain about 6% underwater even after the rebound. Their average cost basis sits at $84,029, against a $78,955 spot price, Galaxy Research data shows.

Bitcoin’s spot price traded above $80,000 on Thursday.

Whether the rebound continues may depend on ETF inflows holding into September. Traders will also watch if last week’s short squeeze proves lasting or temporary.

Read the article at BeInCrypto