Shares of Strategy fell 4.2% on Friday after MSCI announced new rules for its indexes. Starting November 30, non-operating companies will be ineligible for inclusion. This change puts billions in passive holdings at risk. Strategy warned last year that such an exclusion could lead to $2.8 billion of its stock being liquidated.

Shares of Strategy, the world's ​biggest corporate bitcoin holder and a constituent of the MSCI USA and ​MSCI World indexes, fell 4.2% on Friday.

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MSCI said on Thursday non-operating companies ⁠will be ineligible for its Global Investable Market Indexes from the close of ​November 30, as part of its November index review. It will publish the ​final list of affected companies on November 11.

The decision follows a review MSCI began a year ago, when it proposed excluding digital asset treasury companies on the grounds that they resemble investment funds, which ​are already barred from its indexes. MSCI deferred that plan in January and opened a ​broader review on all non-operating companies.

MSCI defines non-operating companies as investment funds and business development companies, ‌and ⁠other companies whose finances make them look like one.

The changes are aimed at expanding MSCI’s exclusions ​for passive investment vehicles, ​with companies required ⁠to meet financial tests on their operating assets to remain eligible.

Index inclusion matters to companies such as Strategy because passive ​funds and other investors tracking benchmarks are required to hold ​their shares.

Strategy ⁠did not immediately respond to a Reuters request for comment.

The company warned last year that an exclusion would result in $2.8 billion of its stock being liquidated and would "chill" the industry.

Strategy, which ⁠pioneered ​the model of raising money through stock and ​debt sales to buy bitcoin, had a market value of about $64.3 billion on Friday. Its shares were down ​4.8% in 2026.

Updates with graphic and share price

Reporting by Ragini Mathur and Medha Singh in Bengaluru; Editing by Devika Syamnath