The 10 Worst-Performing Stocks on Monday

5. Tetra Tech Inc. (NASDAQ:TTEK)

Tetra Tech shares dropped 7.04 percent to $34.21 on Monday, mirroring the broader market’s decline. The stock’s slide came on the heels of a recent dip to a new 52-week low last week.

Despite a strong earnings performance and a robust dividend program that has delivered 11 consecutive years of increases, analysts believed that Tetra Tech’s valuation was already stretched, signaling that the stock may have already been oversold.

Just recently, Tetra Tech reported a 16-percent increase in its revenues for the first quarter of fiscal year 2025, settling at $1.42 billion, surpassing analyst estimates. The company also raised the high end of its fiscal 2025 earnings guidance.

In the same period, Tetra Tech posted adjusted earnings per share of 35 cents, exceeding the analyst consensus of 34 cents, with net revenues—excluding subcontractor costs—rising 18 percent year-on-year at $1.2 billion.