Cryptocurrency market faced a major selloff in September 2025, losing over $160 billion in value within days. Bitcoin fell below $111,000 from its August high of $124,000. Ethereum dropped under $4,000, while many altcoins also suffered significant losses. Investor fears and uncertain economic conditions fueled the downturn. Regulatory worries and large liquidations intensified the pressure. Despite this, some experts expect a recovery in late 2025 as conditions stabilize.