EME — S&P 500 index addition

EMCOR Group (EME) entered the S&P 500 at the close on Sep 22, 2025, replacing Enphase Energy. The recorded announcement came 17 calendar days before the effective close, on Sep 5, 2025. The company is classified in Industrials in this dataset.

In the 30 calendar days leading into the effective close, EME moved +14.3%. The median 30-day run-up among the 25 S&P 500 entries with a recorded announcement and prices for that interval was +16.9%; this stock was 2.6 percentage points below that median. Measured from the effective close, EME returned 1W: +0.8% versus +0.3% for the 28-entry index median; 1M: +3.1% versus +2.2% for the 28-entry index median; 3M: +6.3% versus +5.2% for the 28-entry index median. These figures do not measure movement from the announcement price.

At 1M, it ranks 12th of 28 measured S&P 500 additions and beat the benchmark by 0.6 percentage points. At 3M, it ranks 14th of 28 measured S&P 500 additions and beat the benchmark by 1.4 percentage points. The 1Y window ends on Sep 22, 2026; a result needs a usable close. The other 3 Industrials additions with a measured 1M return averaged +10.1%. This is historical context, not a projection.