
Datadog Inc. (NASDAQ:DDOG) saw a surge of nearly 11% in its stock value during after-hours trading on Wednesday.
What Happened: Datadog’s stock price experienced a 10.88% increase after the market closed on Wednesday, reaching $149.70. This surge followed the company’s announcement of its inclusion in the S&P 500 index. The stock’s closing price was $135.01, reflecting a 2.03% increase during regular trading hours.
S&P Dow Jones announced on July 2, 2025, Datadog is set to join the S&P 500. Datadog will officially replace Juniper Networks (NYSE:JNPR), acquired by Hewlett-Packard Enterprise (NYSE:HPE), in the index. This change will be effective before the market opens on July 9, 2025.