Key Highlights

● Riot fell Friday as pressure on crypto-linked equities spread across bitcoin miners.

● MSCI made companies that mainly hold investments ineligible for its Global Investable Market Indexes.

● MSCI's final list is due Nov 11, with changes effective after the Nov 30 close.

● Bitcoin traded around $81,500, and a roughly $1 billion liquidation wave hit crypto markets.

Spillover from the MSCI decision

Riot Platforms (NASDAQ:RIOT), one of the largest U.S. bitcoin miners, fell on Friday as pressure on crypto-linked equities spread across the sector. Market reports showed the shares down to $14.94 in morning trading and cited no company-specific news. Instead, the stock moved with the wider selling triggered by MSCI (NYSE:MSCI)'s index rules.

MSCI approved rules that make "non-operating companies," those that mainly hold investments, ineligible for its Global Investable Market Indexes, according to market reports. The change is aimed at firms such as Strategy (NASDAQ:MSTR), which holds 848,250 bitcoin. MSCI's final list is due Nov 11, and the changes take effect after the close on Nov 30. Strategy tumbled on the news, market reports said.

Sources described the rule differently. One report said MSCI replaced interim limits with financial tests and that current members would be removed only after failing the screen in two consecutive annual filing periods. Riot, as an operating mining company, was not reported to be a direct target of the rule.

A rough day for miners

Riot was not alone. Cipher Digital (NASDAQ:CIFR) and TeraWulf (NASDAQ:WULF) also fell, according to market reports. Hut 8 (NASDAQ:HUT) slid at midday after on-chain data showed large bitcoin transfers to exchanges, and the WGMI exchange-traded fund, which holds a basket of crypto-mining stocks, sank sharply. That made miners one of the weakest corners of the market on the day.

Many bitcoin miners have also been repositioning as hosts for artificial-intelligence computing, which tied them to Friday's broader selloff in AI-infrastructure names. CoreWeave (NASDAQ:CRWV) plunged amid concerns about its debt load of more than $50 billion, according to market reports.

Bitcoin itself was relatively steady, trading around $81,500, slightly lower on the day, per market data. Market commentary said the cryptocurrency was headed for a second straight weekly loss, and a roughly $1 billion liquidation wave hit crypto markets from Thursday into Friday.

Small caps reversed course

The Russell 2000 fell 45.90 points to about 2,721, according to market data, after opening higher. Another data point put the close at 2,719.57. The index was nearly flat in mid-morning trading before selling intensified in the afternoon.

The large-cap indexes also slid. The S&P 500 lost 84.62 points to 7,659.44, the Nasdaq Composite fell 572.99 points to 26,140.03 and the Dow Jones Industrial Average slipped 175.28 points to 52,002.41. The Cboe Volatility Index rose 3.53 points to 19.99. Energy, utilities and consumer staples gained as investors moved toward defensive sectors.

Riot Tracks MSCI Dates and Bitcoin

Macro factors also matter. The Federal Reserve's next decision is on Oct 28. Chair Kevin Warsh, speaking at an IMF gathering in Bangkok, said, "I don't prejudge meetings." Futures still price roughly one quarter-point hike by December. The personal consumption expenditures price index and the first estimate of third-quarter GDP are due Oct 29.

The MSCI timeline is the main event for bitcoin-linked equities: the final list of affected companies is due Nov 11, with changes effective after the Nov 30 close. Investors in miners such as Riot will watch for any knock-on effects on sentiment toward crypto stocks, as well as the direction of bitcoin, which has been under pressure for two weeks.