Tetra Tech Inc
TTEK- Exchange
- Nasdaq
- Industry
- Services-Engineering Services
- SEC CIK
- 0000831641
No open-market purchases or sales by Tetra Tech Inc insiders were filed in the last 90 days; 555 institutions reported holding it in 13F filings for Q2 2026, worth $7.32B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Tetra Tech Inc as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 597
- +14 vs. Q2 2025
- Shares held
- 246.3M
- −56.3K (0.0%) vs. Q2 2025
- Total value
- $8.22B
- −$607.6M (−6.9%) vs. Q2 2025
- New holders
- 74
- 231 more added
- Sold out
- 60
- 202 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TTEK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 555 | $7.32B |
| Q1 2026 | 593 | $7.35B |
| Q4 2025 | 611 | $8.10B |
| Q3 2025 | 597 | $8.22B |
| Q2 2025 | 590 | $8.94B |
| Q1 2025 | 568 | $7.18B |
| Q4 2024 | 638 | $9.45B |
| Q3 2024 | 646 | $11.2B |
| Q2 2024 | 600 | $9.88B |
| Q1 2024 | 512 | $8.66B |
| Q4 2023 | 510 | $7.87B |
| Q3 2023 | 471 | $7.09B |
| Q2 2023 | 455 | $7.67B |
| Q1 2023 | 445 | $6.81B |
| Q4 2022 | 470 | $6.68B |
| Q3 2022 | 412 | $5.91B |
| Q2 2022 | 415 | $6.31B |
| Q1 2022 | 404 | $7.86B |
| Q4 2021 | 401 | $7.93B |
| Q3 2021 | 359 | $7.08B |
| Q2 2021 | 366 | $5.68B |
| Q1 2021 | 365 | $6.39B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Louisiana State Employees Retirement System | 73,100 | $2.44M | 0.04% | −1,000−1.3% | Reduced |
| Engineers Gate Manager LP | 72,822 | $2.43M | 0.03% | −4,651−6.0% | Reduced |
| Northwest & Ethical Investments L.P. | 72,757 | $2.43M | 0.06% | +2,812+4.0% | Added |
| Edmond de Rothschild Holding S.A. | 71,167 | $2.38M | 0.04% | +33,120+87.1% | Added |
| Summit Trail Advisors, LLC | 71,029 | $2.37M | 0.03% | +28,871+68.5% | Added |
| Franklin Resources Inc | 70,589 | $2.36M | 0.00% | +35,972+103.9% | Added |
| Campbell & CO Investment Adviser LLC | 70,217 | $2.34M | 0.18% | +70,217 | New |
| Ameritas Investment Partners, Inc. | 69,947 | $2.33M | 0.07% | −3,715−5.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 69,265 | $2.31M | 0.00% | +20,000+40.6% | Added |
| Cetera Investment Advisers | 68,633 | $2.29M | 0.00% | +16,099+30.6% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 67,440 | $2.25M | 0.01% | −262−0.4% | Reduced |
| XTX Topco Ltd | 67,042 | $2.24M | 0.12% | +14,176+26.8% | Added |
| Teacher Retirement System of Texas | 65,549 | $2.19M | 0.01% | −2,995−4.4% | Reduced |
| Tudor Investment Corp Et Al | 64,401 | $2.15M | 0.01% | +64,401 | New |
| State of Michigan Retirement System | 62,540 | $2.09M | 0.01% | −800−1.3% | Reduced |
| Exchange Traded Concepts, LLC | 62,378 | $2.08M | 0.02% | −9,919−13.7% | Reduced |
| Federated Hermes, Inc. | 61,956 | $2.07M | 0.00% | −150,603−70.9% | Reduced |
| Capital International Inc | 61,921 | $2.07M | 0.02% | +61,921 | New |
| Thrivent Financial for Lutherans | 60,842 | $2.03M | 0.00% | −1,672−2.7% | Reduced |
| Pacer Advisors, Inc. | 59,709 | $1.99M | 0.01% | +59,709 | New |
| Two Sigma Advisers, LP | 59,500 | $1.99M | 0.00% | +59,500 | New |
| Northwestern Mutual Investment Management Company, LLC | 58,571 | $1.96M | 0.03% | −262−0.4% | Reduced |
| Bank of Montreal | 56,080 | $1.87M | 0.00% | +13,043+30.3% | Added |
| New Age Alpha Advisors, LLC | 56,028 | $1.87M | 0.08% | −1,520−2.6% | Reduced |
| Bristlecone Advisors, LLC | 54,506 | $1.82M | 0.15% | −7,907−12.7% | Reduced |
| New Mexico Educational Retirement Board | 54,500 | $1.82M | 0.06% | 00.0% | Unchanged |
| South Dakota Investment Council | 54,270 | $1.81M | 0.04% | −50,500−48.2% | Reduced |
| Oregon Public Employees Retirement Fund | 52,925 | $1.77M | 0.02% | −700−1.3% | Reduced |
| Intech Investment Management LLC | 52,670 | $1.76M | 0.02% | +16,135+44.2% | Added |
| KLP Kapitalforvaltning AS | 52,500 | $1.75M | 0.01% | −1,300−2.4% | Reduced |
| Cerity Partners LLC | 51,962 | $1.73M | 0.00% | −3,188−5.8% | Reduced |
| Brinker Capital Investments, LLC | 51,484 | $1.72M | 0.01% | +1,737+3.5% | Added |
| Brevan Howard Capital Management LP | 51,119 | $1.71M | 0.02% | +13,848+37.2% | Added |
| Captrust Financial Advisors | 50,744 | $1.69M | 0.00% | +1,903+3.9% | Added |
| Y-Intercept (Hong Kong) Ltd | 50,564 | $1.69M | 0.04% | +32,480+179.6% | Added |
| CAPROCK Group, Inc. | 46,156 | $1.68M | 0.04% | +46,156 | New |
| Worldquant Millennium Advisors LLC | 49,944 | $1.67M | 0.01% | +49,944 | New |
| Dynamic Technology Lab Private Ltd | 48,113 | $1.61M | 0.27% | +48,113 | New |
| Terra Alpha Investments LLC | 47,958 | $1.60M | 1.63% | −462−1.0% | Reduced |
| Atria Investments LLC | 47,508 | $1.59M | 0.02% | +17,911+60.5% | Added |
| Nordea Investment Management AB | 47,558 | $1.59M | 0.00% | 00.0% | Unchanged |
| VestGen Advisors, LLC | 46,329 | $1.55M | 0.05% | −1,447−3.0% | Reduced |
| Radnor Capital Management, LLC | 45,620 | $1.52M | 0.23% | +11,700+34.5% | Added |
| Quantbot Technologies LP | 42,786 | $1.43M | 0.04% | +38,767+964.6% | Added |
| One Capital Management, LLC | 42,224 | $1.41M | 0.04% | +15,707+59.2% | Added |
| Future Fund LLC | 42,224 | $1.41M | 0.50% | +15,707+59.2% | Added |
| Farringdon Capital, Ltd. | 42,134 | $1.41M | 0.36% | +42,134 | New |
| Oddo BHF Asset Management SAS | 40,071 | $1.34M | 0.05% | −39,869−49.9% | Reduced |
| Victory Capital Management Inc | 39,579 | $1.32M | 0.00% | −4,435−10.1% | Reduced |
| Formula Growth Ltd | 39,050 | $1.30M | 0.46% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 39,045 | $1.30M | 0.00% | −37,550−49.0% | Reduced |
| Bailard, Inc. | 39,000 | $1.30M | 0.03% | 00.0% | Unchanged |
| Xponance, Inc. | 38,992 | $1.30M | 0.01% | −2,294−5.6% | Reduced |
| Inscription Capital, LLC | 38,643 | $1.29M | 0.14% | +24,556+174.3% | Added |
| Tredje AP-fonden | 38,112 | $1.27M | 0.01% | +5,432+16.6% | Added |
| Davy Global Fund Management Ltd | 36,739 | $1.23M | 0.08% | +9,411+34.4% | Added |
| Entropy Technologies, LP | 36,058 | $1.20M | 0.09% | +36,058 | New |
| Oak Thistle LLC | 35,899 | $1.20M | 0.18% | +2,931+8.9% | Added |
| Qsemble Capital Management, LP | 35,626 | $1.19M | 0.12% | +35,626 | New |
| Fox Run Management, L.L.C. | 34,948 | $1.17M | 0.18% | +5,924+20.4% | Added |
| O'Shaughnessy Asset Management, LLC | 34,813 | $1.16M | 0.01% | +1,446+4.3% | Added |
| Bleakley Financial Group, LLC | 34,455 | $1.15M | 0.03% | −1,889−5.2% | Reduced |
| Vancity Investment Management Ltd | 34,211 | $1.14M | 0.15% | +1,534+4.7% | Added |
| JustInvest LLC | 33,331 | $1.11M | 0.01% | +27+0.1% | Added |
| Whittier Trust Co | 32,915 | $1.11M | 0.01% | 00.0% | Unchanged |
| Hunter Associates Investment Management LLC | 32,495 | $1.09M | 0.15% | −880−2.6% | Reduced |
| Tributary Capital Management, LLC | 32,747 | $1.09M | 0.10% | −7,210−18.0% | Reduced |
| Voloridge Investment Management, LLC | 32,329 | $1.08M | 0.00% | +32,329 | New |
| Triglav Skladi, D.O.O. | 32,090 | $1.07M | 0.07% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 31,751 | $1.06M | 0.00% | −24,936−44.0% | Reduced |
| Aaron Wealth Advisors | 31,122 | $1.04M | 0.06% | +23,065+286.3% | Added |
| Ethic Inc. | 31,026 | $1.04M | 0.02% | +996+3.3% | Added |
| Axq Capital, LP | 30,678 | $1.02M | 0.39% | +3,789+14.1% | Added |
| D.A. Davidson & Co. | 30,465 | $1.02M | 0.01% | +1,800+6.3% | Added |
| Legacy Wealth Asset Management, LLC | 30,270 | $1.01M | 0.25% | −443−1.4% | Reduced |
| PDT Partners, LLC | 30,252 | $1.01M | 0.06% | +30,252 | New |
| Gitterman Wealth Management, LLC | 30,211 | $1.01M | 0.23% | +11,754+63.7% | Added |
| Syon Capital LLC | 29,672 | $990.5K | 0.05% | +8,455+39.9% | Added |
| State of Alaska, Department of Revenue | 28,182 | $940.0K | 0.01% | −1,393−4.7% | Reduced |
| Hillsdale Investment Management Inc. | 27,400 | $914.6K | 0.03% | +27,400 | New |
| Coldstream Capital Management Inc | 27,348 | $912.9K | 0.01% | +3,272+13.6% | Added |
| Mariner, LLC | 27,203 | $908.0K | 0.00% | −16,868−38.3% | Reduced |
| Prudential Financial Inc | 27,070 | $903.6K | 0.00% | −665−2.4% | Reduced |
| Quadrant Capital Group LLC | 26,850 | $896.3K | 0.03% | +1,820+7.3% | Added |
| New York Life Investment Management LLC | 26,679 | $890.5K | 0.01% | −1,334−4.8% | Reduced |
| Susquehanna International Group, LLP | 25,954 | $866.3K | 0.00% | −34,859−57.3% | Reduced |
| Public Employees Retirement Association of Colorado | 25,946 | $866.0K | 0.00% | −1,584−5.8% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 25,915 | $865.0K | 0.01% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 25,206 | $863.3K | 0.00% | +3,507+16.2% | Added |
| MML Investors Services, LLC | 25,855 | $863.0K | 0.00% | −2,657−9.3% | Reduced |
| Lazard Freres Gestion S.A.S. | 25,830 | $862.0K | 0.02% | 00.0% | Unchanged |
| Equitable Trust Co | 25,756 | $859.7K | 0.04% | +8,858+52.4% | Added |
| Baird Financial Group, Inc. | 25,344 | $846.0K | 0.00% | −3,200−11.2% | Reduced |
| Patten Group, Inc. | 25,247 | $842.7K | 0.16% | +3,631+16.8% | Added |
| Capital Group Investment Management Pte. Ltd. | 24,540 | $819.1K | 0.14% | +24,540 | New |
| Groupama Asset Managment | – | $814.7K | 0.01% | – | – |
| Alps Advisors Inc | 24,159 | $806.4K | 0.00% | +12,027+99.1% | Added |
| U.S. Capital Wealth Advisors, LLC | 23,484 | $783.9K | 0.02% | +3,666+18.5% | Added |
| Harbour Investments, Inc. | 23,466 | $783.3K | 0.02% | −192−0.8% | Reduced |
| Sciencast Management LP | 23,390 | $780.8K | 0.15% | −42,804−64.7% | Reduced |