Correction to MW The Wall Street equivalent of roster-cut day happens Friday. It'll be one of the biggest volume days of the year.

The previous version of the story misattributed a quotation from emailed comments. By Steve Goldstein

Friday is the Wall Street equivalent of roster-cut day.

FTSE Russell is undertaking its semi-annual rebalancing - what the index provider calls its reconstitution - and the size of the undertaking could impact markets, say analysts.

The reconstitution takes place after the close on Friday, impacting the $12 trillion in assets benchmarked or invested in products based on Russell indexes. According to LSEG, $217.2 billion traded during last June's reconstitution, making it one of the highest volume trading days of the year.

It matters not just because companies are added and subtracted from the indexes - the preliminary tabulation is that 62 companies will be added to the Russell 1000 RUI and 237 to the smaller-cap Russell 2000 RUT- but because new weights are assigned. SpaceX (SPCX) is among the companies set to be added, as well as CoreWeave (CRWV).

Nvidia (NVDA) will now become the top component, as current leader Apple (AAPL) moves to number three. Walmart (WMT) will move into the top 10.

"Think of it as Wall Street's version of roster cut day, as thousands of stocks are reshuffled across the Russell indexes based primarily on changes in market capitalization," said Jay Woods, chief market strategist at Freedom Capital Markets. "Winners move up, laggards move down, and index funds tracking trillions of dollars in assets are forced to adjust their holdings by the closing bell."

"Buckle up," added John Flood, head of Americas equities execution services at Goldman Sachs. He points out the rebalancing is happening just ahead of quarter-end pension-fund rebalancing, in which the firm estimates about $30 billion of equities will be sold.

There are other effects as well. JPMorgan analysts note the companies getting promoted from the Russell 2000 into the Russell 1000 tend to be volatile, non-dividend paying companies. This will end up boosting the annual dividend payments from the Russell 2000 companies left behind by 16.5%, they estimate.

-Steve Goldstein

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06-26-26 0047ET