TLDR
- Crypto market lost $44 billion in 24 hours as Bitcoin dropped to $107,478, hitting two-month lows
- Whale dumped 24,000 Bitcoin worth $2.7 billion, causing $900 million in forced liquidations across markets
- $13.8 billion Bitcoin options expiry added volatility as traders repositioned portfolios
- September continues historic pattern of crypto weakness with eight of last ten years closing red
- Total market cap fell to $3.76 trillion with key support at $3.67 trillion now being tested
Cryptocurrency markets experienced a sharp decline on September 1, 2025, with the total market capitalization falling $44 billion to $3.76 trillion. Bitcoin led the downturn, dropping to $107,478 and breaking through critical support levels.

The selloff intensified when a major whale sold 24,000 Bitcoin worth approximately $2.7 billion. This massive transaction triggered around $900 million in forced liquidations across cryptocurrency exchanges. The whale activity created cascading price drops that affected the entire digital asset ecosystem.
Bitcoin’s decline marked a two-month low for the world’s largest cryptocurrency. The asset fell from $112,500 over the past week, losing 0.82% in the last 24 hours alone. Ethereum and other major altcoins also posted losses between 1-3% during the same period.
The timing of the whale sale coincided with the expiry of $13.8 billion in Bitcoin options contracts. Options expiry events typically increase market uncertainty as institutional traders adjust their positions. This combination of whale selling and options volatility amplified price swings throughout the trading session.
September Market Weakness
September has historically proven challenging for cryptocurrency markets. Bitcoin has closed lower in eight of the last ten September periods, earning the month its “Red September” reputation among traders. This pattern reflects both investor psychology and typical institutional rebalancing activities.
Portfolio adjustments and tax-loss harvesting typically increase during September as fund managers prepare for quarter-end reporting. These activities create additional selling pressure that compounds seasonal weakness patterns. Lower trading volumes during the decline made markets more susceptible to large transactions.
Technical Support Levels Under Pressure
The total crypto market cap now tests crucial support at $3.67 trillion. A break below this level could trigger further declines toward $3.58 trillion, erasing recent gains and deepening investor concerns about market stability.

Bitcoin faces a critical test at the $108,000 level after breaking below this key support zone. Sustained weakness could push the cryptocurrency toward the next support area at $105,585. Recovery above $108,000 would be necessary to halt the current bearish momentum.
The market downturn reflects the ongoing connection between macroeconomic conditions and digital asset prices. Bearish financial signals continue weighing on sentiment across cryptocurrency markets. Lower liquidity levels made the impact of whale transactions more pronounced, creating conditions for the September selloff to gain momentum.