Tetra Tech

TTEK

Market cap $8.06B

TTEK Hedge Fund Activity: Q1 2026 in Review

588 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Tetra Tech (TTEK) for Q1 2026, worth a combined $7.35B — down 11% from $8.22B a quarter earlier.

Sellers outnumbered buyers: 84 funds closed out of TTEK and 73 opened new positions — a net loss of 11 holders — while 228 trimmed existing stakes and 200 added.

The largest buyer was Wellington Management Group, adding an estimated $133M. The largest seller was Corient Private Wealth, cutting an estimated $61.8M.

• 588 institutional investors held Tetra Tech (TTEK) as of Q1 2026, down from 609 in Q4 2025.
• Funds reported $7.35B of Tetra Tech stock for Q1 2026, down 11% quarter-over-quarter.
• 73 funds opened new Tetra Tech positions in Q1 2026 and 84 closed out, a net change of -11 holders.
• The largest Tetra Tech buyer in Q1 2026 was Wellington Management Group, an estimated $133M added.
• The largest Tetra Tech seller in Q1 2026 was Corient Private Wealth, an estimated $61.8M sold.

Based on aggregated 13F filings for Q1 2026.