Strategy (MSTR) Stocks Plunge on MSCI Index Exclusion Proposal

Shares of Strategy (MSTR) declined by 3.5% during the afternoon session after index provider MSCI proposed removing the company from its Global Investable Market Indexes.

The potential rule change affects non-operating companies with large treasury asset holdings, a category that includes Strategy due to its massive Bitcoin reserves of roughly 840,400 BTC.

A final decision is expected by October, with changes planned for November 2026, which could force investment funds tracking MSCI benchmarks to sell their shares, leading to significant selling pressure on the stock.