Check out the companies making headlines yesterday:

Commvault (NASDAQ: CVLT): Data protection software company Commvault (NASDAQ: CVLT) rose by 10.7% on Tuesday after it reported first-quarter 2026 results that significantly beat analyst expectations for revenue and profit, though its full-year outlook was underwhelming. See our full article here.

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Atlas Energy Solutions (NYSE: AESI): Proppant sand producer Atlas Energy Solutions (NYSE: AESI) rose by 3.8% on Tuesday after a spike in crude oil prices boosted oilfield services stocks. See our full article here.

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CECO Environmental (NASDAQ: CECO): Environmental solutions provider CECO Environmental (NASDAQ: CECO) rose by 14.2% on Tuesday after the company reported standout first-quarter 2026 results that significantly beat analyst expectations and raised its full-year guidance. See our full article here.

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Centene (NYSE: CNC): Health coverage company Centene (NYSE: CNC) rose by 14.6% on Tuesday after the company reported first-quarter 2026 results that surpassed analyst expectations and raised its full-year financial guidance. See our full article here.

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LifeStance Health Group (NASDAQ: LFST): Behavioral health company LifeStance Health (NASDAQ: LFST) rose by 5% on Tuesday after S&P Dow Jones Indices announced that the company would join the S&P SmallCap 600 index. See our full article here.

Is now the time to buy LifeStance Health Group? Access our full analysis report here, it's free.