Overview

• Datadog will replace Juniper Networks in the S&P 500 before trading on July 9 after Hewlett Packard Enterprise completed its acquisition of Juniper.
• Datadog’s shares surged about 10–15% in premarket and after-hours trading as index-tracking funds prepare portfolio adjustments.
• Inclusion is based on S&P Global’s requirements for profitability, sufficient liquidity, a market capitalization above $10 billion and sector representation.
• The company reported $24.6 million in net income on $761.6 million in revenue in the first quarter of 2025.
• Newly added S&P 500 constituents typically experience short-term share gains as passive and active funds rebalance their holdings.