Tetra Tech
TTEK
592 hedge funds and large institutions have $7.35B invested in Tetra Tech in 2026 Q1 according to their latest regulatory filings, with 74 funds opening new positions, 201 increasing their positions, 230 reducing their positions, and 85 closing their positions.
0.68% more ownership
Funds ownership: 92.7% → 93.38% (+0.68%)
3% less funds holding
Funds holding: 610 → 592 (-18)
10% less capital invested
Capital invested by funds: $8.16B → $7.35B (-$818M)
13% less repeat investments, than reductions
Existing positions increased: 201 | Existing positions reduced: 230
13% less first-time investments, than exits
New positions opened: 74 | Existing positions closed: 85
29% less funds holding in top 10
Funds holding in top 10: 7 → 5 (-2)
91% less call options, than puts
Call options by funds: $4.07M | Put options by funds: $43.3M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$133M |
| 2 |
Fuller & Thaler Asset Management
San Mateo,
California
|
+$117M |
| 3 |
Capital International Investors
Los Angeles,
California
|
+$83.7M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$59.7M |
| 5 |
BlackRock
New York
|
+$37.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Pictet Asset Management
Carouge,
Switzerland
|
-$55.1M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
-$48.1M |
| 3 |
CCM
Copeland Capital Management
Conshohocken,
Pennsylvania
|
-$45.9M |
| 4 |
Neuberger Berman Group
New York
|
-$38.2M |
| 5 |
Janus Henderson Group
London,
|
-$32.9M |
TTEK Hedge Fund Activity: Q1 2026 in Review
592 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Tetra Tech (TTEK) for Q1 2026, worth a combined $7.35B — down 10% from $8.16B a quarter earlier.
Sellers outnumbered buyers: 85 funds closed out of TTEK and 74 opened new positions — a net loss of 11 holders — while 230 trimmed existing stakes and 201 added.
The largest buyer was Wellington Management Group, adding an estimated $133M. The largest seller was Pictet Asset Management, cutting an estimated $55.1M.
- 592 institutional investors held Tetra Tech (TTEK) as of Q1 2026, down from 610 in Q4 2025.
- Funds reported $7.35B of Tetra Tech stock for Q1 2026, down 10% quarter-over-quarter.
- 74 funds opened new Tetra Tech positions in Q1 2026 and 85 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 Pictet Asset Management, an estimated $55.1M sold.
Based on aggregated 13F filings for Q1 2026.