Sarasin & Partners Dumps Tetra Tech (TTEK) Shares Worth $155.4 Million

Sarasin & Partners LLP significantly reduced its stake in Tetra Tech (TTEK) during Q3 2025, divesting 4,273,853 shares valued at an estimated $155.35 million, according to an Oct. 10 SEC filing. This substantial sale cut TTEK's weighting in Sarasin's $10.2 billion U.S. equity portfolio from 1.68% to 0.14%, signaling a lack of conviction. The move comes as TTEK shares underperformed the S&P 500 by 47.6 percentage points over the past year, despite a recent 16% recovery that Sarasin appears to have leveraged for its near-full exit, potentially due to ongoing government spending headwinds.

Analysis

Sarasin & Partners LLP executed a substantial divestment of Tetra Tech (TTEK) shares in Q3 2025, selling 4,273,853 shares valued at an estimated $155.35 million. This action reduced TTEK's weighting in Sarasin's $10.2 billion U.S. equity portfolio from 1.68% to a minimal 0.14%, signaling a significant loss of conviction. The fund now holds only 409,723 shares, valued at $13.8 million.

This strategic exit follows TTEK's considerable underperformance, with its stock down 30.7% over the past year and trailing the S&P 500 by 47.6 percentage points as of October 9, 2025. While TTEK reported a strong fiscal Q3 with a 34% year-over-year EPS jump and a 16% stock recovery since April, Sarasin appears to have leveraged these gains to nearly fully exit its position.

The implied rationale for this move points to increasing headwinds from government spending cuts and heightened scrutiny on federal contracts, a key revenue source for Tetra Tech. Tetra Tech, a provider of consulting and engineering services focused on water resources and infrastructure, faces direct impact from ongoing initiatives by the Department of Government Efficiency (DOGE) to reduce federal spending. This macro-level policy shift, coupled with recent stock volatility, underscores challenges for companies reliant on public sector expenditure.

Key Decisions for Investors

• Investors should closely monitor Tetra Tech's exposure to government contracts and any updates on federal spending policies, as these represent significant headwinds.
• Evaluate TTEK's strategic initiatives to diversify its revenue streams beyond government clients, assessing the sustainability of its commercial and international growth.
• Consider the implications of a major institutional investor's near-full exit, particularly whether the recent 16% stock recovery presents a similar selling opportunity or a potential entry point if fundamental concerns are addressed.