S&P Dow Jones Indices is making three major changes to the S&P 500, adding Bloom Energy, Everpure and Illumina while removing Molson Coors Beverage, The Trade Desk and Builders FirstSource from the benchmark.
The changes will take effect before the opening of trading on Monday, September 21, as part of the index provider’s quarterly rebalance.
Investors immediately reacted to the announcement. Bloom Energy led the incoming companies, climbing about 7.5% in after-hours trading, while Illumina gained approximately 2% and Everpure advanced around 2.2%.
Bloom Energy Leads the Rally
Bloom Energy’s addition represents another milestone in an extraordinary year for the fuel-cell company, which has benefited from growing investor enthusiasm around electricity demand from artificial intelligence infrastructure and data centers.
The company entered the announcement with a market capitalization above $70 billion, making it one of the largest companies eligible for inclusion in the benchmark.
Bloom Energy’s technology provides on-site electricity generation, a proposition that has gained attention as technology companies search for ways to secure sufficient power for increasingly energy-intensive AI data centers.
Its inclusion in the S&P 500 can also create additional demand for the shares. Funds and ETFs designed to replicate the benchmark must adjust their portfolios to reflect changes in index membership, forcing index-tracking vehicles to purchase shares of newly added companies.
Illumina and Everpure Move Into the S&P 500
Illumina and Everpure will also be promoted to the large-cap benchmark.
Illumina, a major provider of DNA sequencing technology, will replace Builders FirstSource, while Everpure will take the place of The Trade Desk. Bloom Energy will replace Molson Coors Beverage.
Everpure and Illumina are currently members of the S&P MidCap 400 and will leave that index when they move into the S&P 500.
The three companies departing the S&P 500 are not disappearing from S&P’s index system altogether. Molson Coors, The Trade Desk and Builders FirstSource will all move into the S&P SmallCap 600 as part of the broader reshuffle.
S&P Dow Jones Indices said the changes are intended to ensure that its benchmarks remain representative of their respective market-capitalization ranges.
Index Inclusion Creates New Buying Demand
Joining the S&P 500 can be a significant event for a publicly traded company because of the enormous amount of capital tied directly or indirectly to the benchmark.
Passive funds tracking the index need to own its constituents in the appropriate proportions, while other institutional investors frequently use the S&P 500 as a reference point for portfolio construction.
That dynamic helps explain why newly announced constituents often rally immediately after their inclusion is revealed.
For Bloom Energy, the announcement adds another catalyst to a year already defined by powerful gains and rising investor interest in companies positioned to supply the energy required by the AI infrastructure boom.
When the changes become effective on September 21, Bloom Energy, Illumina and Everpure will officially enter America’s most closely followed equity benchmark, while Molson Coors, The Trade Desk and Builders FirstSource will leave it.
