Key Highlights
- Three companiesāBloom Energy, Everpure, and Illuminaāwill enter the S&P 500 on September 21, 2026
- Molson Coors Beverage, The Trade Desk, and Builders FirstSource will be removed from the index
- The exiting companies will transition to the S&P SmallCap 600 index
- Four technology firmsāDell Technologies, Palo Alto Networks, Arista Networks, and Sandiskāwill enter the S&P 100
- Honeywell Aerospace, Nike, Simon Property Group, and Colgate-Palmolive will depart from the S&P 100
Three new stocks are preparing to enter the prestigious S&P 500 during the index’s scheduled quarterly adjustment. The modifications will become official prior to Monday’s market opening on September 21, 2026.
The announcement came Friday from S&P Dow Jones Indices. These periodic adjustments ensure each benchmark accurately captures the companies within its specific market capitalization tier.
The New Entrants and Departing Members
Bloom Energy, a manufacturer of fuel-cell power systems designed for commercial enterprises and data facilities, will take the spot currently held by Molson Coors Beverage. Molson Coors produces popular beer brands including Coors Light and Miller Lite.
Everpure, which specializes in data-storage solutions and information management platforms, will assume the position vacated by The Trade Desk. The Trade Desk develops advertising technology that enables marketers to purchase and oversee digital advertising efforts.
Illumina, known for its DNA-sequencing innovations, will displace Builders FirstSource. Builders FirstSource distributes construction materials to the residential building sector across the United States.
The three companies leaving the S&P 500 will all transition downward to the S&P SmallCap 600. Meanwhile, both Everpure and Illumina are advancing from their current positions in the S&P MidCap 400 to the large-cap S&P 500.
This particular reshuffle adds one stock each to the information technology and healthcare sectors. Conversely, the consumer staples and communication services sectors will each see one departure.
Technology Companies Strengthen Position in S&P 100
The S&P 100 index, which represents the largest American corporations, is undergoing simultaneous changes. Four companiesāDell Technologies, Palo Alto Networks, Arista Networks, and Sandiskāwill become new members.
These additions will replace Honeywell Aerospace, Nike, Simon Property Group, and Colgate-Palmolive. Notably, all four incoming companies belong to the information technology sector, while none of the exiting firms do.
This shift reflects an ongoing pattern of technology corporations claiming larger portions of the market’s upper echelon.
Index inclusion triggers automatic portfolio adjustments by passive funds that replicate these benchmarks. These funds must purchase shares of newly added companies while divesting holdings in removed ones to maintain alignment.
Such mechanical trading typically generates upward momentum for incoming stocks and downward pressure for outgoing securities. Market participants frequently position themselves ahead of the official transition date in anticipation of these flows.
It’s important to note that index membership changes don’t alter a company’s fundamental operations or profit trajectory.
Additional adjustments in this rebalancing cycle include the promotion of HubSpot, AGNC Investment, Corcept Therapeutics, and Brinker International to the S&P MidCap 400.
Boston Beer and Capri Holdings will shift downward from the S&P MidCap 400 to the S&P SmallCap 600.
The SmallCap 600 will welcome several new members including Herc Holdings and Delek US Holdings, among others. According to S&P, the departing companies have outgrown the small-cap classification of the U.S. stock market.
Every modification spanning the S&P 500, S&P 100, S&P MidCap 400, and S&P SmallCap 600 indices will take effect prior to trading activity on September 21, 2026.
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