PLTR — S&P 500 index addition

Palantir Technologies (PLTR) entered the S&P 500 at the close on Sep 23, 2024, replacing American Airlines. The recorded announcement came 17 calendar days before the effective close, on Sep 6, 2024. The company is classified in Information Technology in this dataset. The same ticker also appears in the tracked Nasdaq-100 addition register. That record alone does not establish a transfer between indexes.

In the 30 calendar days leading into the effective close, PLTR moved +28.6%. 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 11.6 percentage points above that median. Measured from the effective close, PLTR returned 1W: +2.8% versus +0.3% for the 28-entry index median; 1M: +19.4% versus +2.2% for the 28-entry index median; 3M: +108.3% versus +5.2% for the 28-entry index median; 1Y: +302.8% versus +11.6% for the 24-entry index median. These figures do not measure movement from the announcement price.

At 1M, it ranks 2nd of 28 measured S&P 500 additions and beat the benchmark by 19.2 percentage points. At 3M, it ranks 1st of 28 measured S&P 500 additions and beat the benchmark by 104.5 percentage points. At 1Y, it ranks 1st of 24 measured S&P 500 additions and beat the benchmark by 286.8 percentage points. The other 7 Information Technology additions with a measured 1M return averaged -6.1%. This is historical context, not a projection.