Bitcoin Drops Under $90,000 on 21 January 2026 amid Market Sell-Off

On 21 January 2026, Bitcoin fell below $90,000 as broad crypto selling accelerated. According to market data, it reached about $88,200, nearly 4% lower on the day and more than 6% down for the week, while total market capitalization slipped to roughly $3.02 trillion. Altcoins, including Ethereum and Solana, posted sharper weekly declines.