Key Highlights

● Strategy slid as MSCI approved rules on non-operating companies that mainly hold investments.

● MSCI is due to publish its final list of affected companies on November 11.

● Reports differed on how fast removal could happen, citing a possible two-period screen.

● Strategy holds 848,250 bitcoin, and crypto-linked miners also fell as bitcoin traded near $81,500.

The MSCI rule change

Strategy (NASDAQ:MSTR), the company formerly known as MicroStrategy and best known for its large bitcoin holdings, slid in Friday's session and ranked among the notable decliners on the Nasdaq-100. According to market reports, MSCI (NYSE:MSCI) approved rules that make "non-operating companies," those that mainly hold investments, ineligible for its Global Investable Market Indexes. Strategy, which holds 848,250 bitcoin according to market data, is the most prominent example of such a company.

Reports indicated the change could lead to Strategy's removal from MSCI's global indexes. The final list of affected companies is due November 11, and changes take effect after the close on November 30.

Strategy closed at $136.72, per market data. Reports differed on the size of the move, partly because they captured different points in the day. Some showed smaller declines in the morning, while others showed a steeper loss by the close.

Why index membership matters

Index providers such as MSCI build benchmarks that trillions of dollars in passive and benchmarked funds follow. When a stock is dropped from a major index, funds tracking that index generally need to sell their holdings, which can weigh on demand for the shares. That is why the potential for removal drew such a strong reaction.

Sources differed on how the rules would apply. Some reports described non-operating companies as becoming ineligible after November 30. Another report said MSCI replaced interim limits with financial tests, and that current index members would be removed only after failing the screen in two consecutive annual filing periods. That difference in framing could matter for how quickly any removal takes place.

Bitcoin and crypto stocks under pressure

The MSCI news landed on a weak day for crypto-linked stocks. Bitcoin traded around $81,500 to $81,600, slightly lower on the day, according to market data, and was headed for a second straight weekly loss, per market commentary. One report put bitcoin near $81,300 at one point.

Market reports said the index-rule pressure on bitcoin-linked equities spilled over into miners. Riot Platforms (NASDAQ:RIOT) fell to $14.94 in the morning, and Cipher Digital (NASDAQ:CIFR) slipped to $9.75. The WGMI crypto-miner ETF fell steeply, and Hut 8 (NASDAQ:HUT) also fell sharply.

A risk-off day on Wall Street

Strategy's drop came as technology and speculative growth names sold off. The Nasdaq Composite fell 572.99 points to 26,140.03, while the Nasdaq-100 dropped sharply too, though sources differed on the size of its decline. The S&P 500 lost 84.62 points to 7,659.44, and the Dow Jones Industrial Average slipped 175.28 points to 52,002.41.

Market commentary said investors shifted from asking what artificial intelligence can do to asking how it will be financed, punishing debt-heavy companies. The VIX rose 3.53 points to 19.99, its intraday high of 22.31 marking its loftiest level since June 11.

Strategy Faces MSCI's Nov 11 List

The key date for Strategy is November 11, when MSCI is due to publish its final list of affected companies, according to market reports. Any changes would take effect after the close on November 30.

On the macro front, the Federal Reserve announces its next rate decision on October 28, and PCE inflation data follows on October 29. Investors will also be watching for clarity on whether existing members face immediate removal or a longer screening process, as one report described. Bitcoin's direction remains a major influence on the stock.