WDAY — S&P 500 index addition

Workday (WDAY) entered the S&P 500 at the close on Dec 23, 2024, replacing Amentum Holdings. The recorded announcement came 17 calendar days before the effective close, on Dec 6, 2024. The company is classified in Information Technology in this dataset.

In the 30 calendar days leading into the effective close, WDAY moved +7.2%. 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 9.7 percentage points below that median. Measured from the effective close, WDAY returned 1W: -2.2% versus +0.3% for the 28-entry index median; 1M: -3.7% versus +2.2% for the 28-entry index median; 3M: -10.4% versus +5.2% for the 28-entry index median; 1Y: -13.4% versus +11.6% for the 24-entry index median. These figures do not measure movement from the announcement price.

At 1M, it ranks 17th of 28 measured S&P 500 additions and lagged the benchmark by 4.7 percentage points. At 3M, it ranks 22nd of 28 measured S&P 500 additions and lagged the benchmark by 6.7 percentage points. At 1Y, it ranks 18th of 24 measured S&P 500 additions and lagged the benchmark by 30.6 percentage points. The other 7 Information Technology additions with a measured 1M return averaged -2.8%. This is historical context, not a projection.