Bitcoin experienced a sharp decline on Monday, briefly falling below the $83,000 mark. The drop was attributed to thin market liquidity and growing concerns about potential changes in MSCI’s stock index methodology. This resulted in sell-offs of other major cryptocurrencies as well, with XRP, Ether, and Solana seeing losses exceeding 2%. The decline comes following a lackluster weekend trading volume and the possibility that MSCI will exclude companies heavily invested in cryptocurrency from its equity indices. This would affect nearly $137 billion in digital assets held by firms like Strategy Inc., Marathon, Riot, Metaplanet, and American Bitcoin, representing roughly 5% of all Bitcoin circulating supply. Market participants attribute the drop to structural weakness rather than broad economic factors. The selling pressure intensified due to shallow order books and limited market depth. The decline comes as traders anticipate potential forced selling from index funds if MSCI makes these changes, which could trigger a significant capital flow shift.