Bitcoin’s rebound has turned into one of the sharpest crypto rallies of 2026. After breaking through $70,000 on August 19 and $72,000 on August 20, Bitcoin accelerated again on August 21, reaching an intraday high above $79,000. The move has been amplified by one of the largest short squeezes in crypto history, but the underlying catalysts extend beyond leveraged traders being forced out of bearish positions.
The initial trigger came from the U.S. bond market. The Treasury said it would at least double liquidity-support buybacks of longer-dated nominal securities after a selloff had pushed long-term yields to their highest levels since 2007. The announcement briefly reduced long-end yields and improved risk appetite. Crypto received another boost from Washington as President Donald Trump pushed Congress to advance the Clarity Act, while the Securities and Exchange Commission proposed new exemptions for certain crypto offerings.
A Record Short Squeeze Accelerated the Breakout
Roughly $2.75 billion of crypto short positions were liquidated on August 19, according to CoinGlass data cited by The Block, the largest daily short-liquidation event in its dataset. Another wave followed as prices continued higher, taking two-day short liquidations to about $3.8 billion by August 21.
Short liquidations create forced buying: traders betting on falling prices must buy back positions when losses exhaust their collateral. That demand can push prices higher, triggering another layer of liquidations. Thin liquidity made the effect stronger. Wincent told The Block that 24-hour crypto trading volume had jumped to roughly five times the yearly low recorded the previous weekend.
ETF Money Is Returning Too
Spot ETF flows provide stronger evidence that the move extends beyond derivatives. U.S. spot Bitcoin ETFs attracted $517.2 million on August 19, their largest daily inflow since early May. BlackRock’s iShares Bitcoin Trust ETF, IBIT accounted for $284.7 million, or about 55% of the total, while ARKB attracted $77.7 million and Fidelity’s FBTC took in $62.4 million.
More important is the reversal in direction. U.S. spot Bitcoin ETFs recorded $248.4 million of combined outflows from August 12 through 14, followed by approximately $1.00 billion of inflows from August 17 through 19. That represents a roughly $1.25 billion swing in six trading sessions.
The inflows continued on August 20, when spot Bitcoin ETFs attracted about $606 million, extending the accumulation streak.
The Next Test Is Spot Demand
The rally has drawn support from improving liquidity expectations, a more favorable U.S. regulatory backdrop, heavy short covering and renewed ETF inflows. Of those forces, ETF and spot demand may offer the clearest indication of whether the move has staying power.
Bitcoin’s break above $70,000 cleared a level that had capped prices since June. With a large portion of bearish leverage already forced out of the market, further gains will depend less on short liquidations and more on fresh capital entering through spot markets and ETFs. The move toward $79,000 on August 21 shows that buying continued beyond the initial squeeze. Whether that momentum lasts will depend increasingly on sustained ETF inflows and underlying spot demand.
