Strategy shares slide 4% on MSCI World Index removal risk

Strategy shares declined 4% in after-hours trading Thursday after traders speculated about its potential removal from the MSCI World Index.

On Thursday, MSCI said it would implement new rules that exclude “non-operating companies” from its Global Investable Market Indexes. The MSCI World Index, which enjoys large passive investment inflows, is among those affected.

Strategy is the largest company likely affected by the new rules. Its MSTR common stock fell 4% within 20 minutes of Thursday's closing bell after the rule change became known.

The rule change coincides with MSCI's November 2026 Index Review, which takes effect after the close on November 30. Strategy has not yet been confirmed for removal but is explicitly listed as at risk.

A final list of affected securities will be published on November 11.

This marks the second time in 2026 that Strategy shareholders have faced such a scare over MSCI World Index inclusion. On January 6, MSCI postponed its first chance to remove the company from the index.

Strategy named as potential removal for November MSCI review

The new MSCI methodology has two stages. First, if a company's “operating” assets are less than half its “total” assets, it enters a screening phase based on five ratios.

Since Strategy's assets are overwhelmingly non-operating (passive bitcoin holdings), it would be subject to this screening.

Then, if a company is flagged on at least four of the five ratios, it becomes ineligible.

For removal, a company must fail the screens in each of the two most recent annual filing periods, which may predate the adoption of the rules.

An impact list released with the adopted rules singles out Strategy. The company's float-adjusted market capitalization, roughly $40 billion as of October 9, is far larger than any other stock on the potential removal list.

BREAKING: MSCI confirms new rules to exclude non-operating companies from its indexes.

Michael Saylor's Strategy and Metaplanet likely to be removed.

Final list Nov 11.$MSTR pic.twitter.com/duwzGJoDHY

— Bitcoin Archive (@BitcoinArchive) October 15, 2026

Strategy executives lobby to remain in MSCI indexes

Strategy's founder Michael Saylor and CEO Phong Le have been actively opposing the removal. The company has set up a subpage on its site to lobby for continued MSCI index inclusion.

In an August 31 letter, Saylor and Le described the proposal as “discriminatory, arbitrary, and misguided.” They cautioned that the rules “would profoundly harm MSCI's reputation as a reliable and neutral index provider.”

The letter pushes MSCI to “remain what it has held itself out to be for decades: a mirror of the market, not an arbiter of it.”

Saylor maintained that stance on television two days before the decision. On October 13, he told Bloomberg Crypto that MSCI's stance was “disappointing.”

In November 2025, during a previous removal threat, JPMorgan estimated that MSCI exclusion alone could lead to $2.8 billion in outflows for Strategy.

Strategy's August consultation response indicates that MSCI-linked funds own about 3.1% of its basic shares, around 13 million shares.