Tetra Tech's stock surged 6.07% in after-hours trading following the release of its first-quarter financial results for fiscal year 2026. The engineering and consulting services company reported earnings and revenue that exceeded analyst expectations, prompting a significant positive market reaction.

The company posted adjusted earnings per share of $0.35, beating the consensus estimate of $0.31. Revenue for the quarter reached $1.21 billion, significantly surpassing the $975.5 million analysts had anticipated. Additionally, Tetra Tech announced it is raising its dividend by 12% to $0.065 per share.

Beyond the strong quarterly performance, Tetra Tech raised its full-year 2026 guidance, projecting net revenue between $4.15 billion and $4.30 billion and adjusted EPS in the range of $1.46 to $1.56. The positive sentiment was further bolstered by news that Tetra Tech Canada signed a memorandum of understanding with Westinghouse Electric Company to develop and deploy AP1000 and AP300 nuclear reactor projects in Ontario, signaling potential future growth in the nuclear energy sector.