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, Q4 2025
Institutional positions in Tetra Tech Inc as of Dec 31, 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
- 611
- +26 vs. Q3 2025
- Shares held
- 241.8M
- −4.04M (−1.6%) vs. Q3 2025
- Total value
- $8.10B
- −$102.0M (−1.2%) vs. Q3 2025
- New holders
- 96
- 182 more added
- Sold out
- 70
- 253 more reduced
12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pacer Advisors, Inc. | 69,553 | $2.33M | 0.01% | +9,844+16.5% | Added |
| Arizona State Retirement System | 69,344 | $2.33M | 0.01% | −4,701−6.3% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 69,265 | $2.32M | 0.00% | 00.0% | Unchanged |
| Penobscot Investment Management Company, Inc. | 68,995 | $2.31M | 0.17% | −46,350−40.2% | Reduced |
| Squarepoint Ops LLC | 68,856 | $2.31M | 0.00% | +49,455+254.9% | Added |
| Engineers Gate Manager LP | 68,186 | $2.29M | 0.03% | −4,636−6.4% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 65,488 | $2.28M | 0.00% | +40,282+159.8% | Added |
| Colony Group, LLC | 67,736 | $2.27M | 0.00% | +48,410+250.5% | Added |
| Franklin Resources Inc | 67,356 | $2.26M | 0.00% | −3,233−4.6% | Reduced |
| Captrust Financial Advisors | 67,079 | $2.25M | 0.00% | +16,335+32.2% | Added |
| Ameritas Investment Partners, Inc. | 66,850 | $2.24M | 0.07% | −3,097−4.4% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 65,418 | $2.19M | 0.01% | −2,022−3.0% | Reduced |
| D'Orazio & Associates, Inc. | 65,395 | $2.19M | 0.28% | −13,509−17.1% | Reduced |
| Bridgewater Associates, LP | 64,301 | $2.16M | 0.01% | +64,301 | New |
| Bridgefront Capital, LLC | 63,878 | $2.14M | 0.54% | +63,878 | New |
| Aquatic Capital Management LLC | 63,634 | $2.13M | 0.06% | −123,254−66.0% | Reduced |
| KLP Kapitalforvaltning AS | 62,700 | $2.10M | 0.01% | +10,200+19.4% | Added |
| Daiwa Securities Group Inc. | 62,600 | $2.10M | 0.01% | −15,919−20.3% | Reduced |
| State of Michigan Retirement System | 61,740 | $2.07M | 0.01% | −800−1.3% | Reduced |
| Exchange Traded Concepts, LLC | 60,750 | $2.04M | 0.02% | −1,628−2.6% | Reduced |
| Thrivent Financial for Lutherans | 59,337 | $1.99M | 0.00% | −1,505−2.5% | Reduced |
| New Age Alpha Advisors, LLC | 58,868 | $1.97M | 0.09% | +2,840+5.1% | Added |
| Northwestern Mutual Investment Management Company, LLC | 58,489 | $1.96M | 0.02% | −82−0.1% | Reduced |
| Brinker Capital Investments, LLC | 58,197 | $1.95M | 0.01% | +6,713+13.0% | Added |
| Horizon Investments, LLC | 55,691 | $1.87M | 0.02% | +55,691 | New |
| New Mexico Educational Retirement Board | 54,500 | $1.83M | 0.05% | 00.0% | Unchanged |
| Numerai GP LLC | 52,930 | $1.78M | 0.21% | +52,930 | New |
| Summit Trail Advisors, LLC | 52,785 | $1.77M | 0.03% | −18,244−25.7% | Reduced |
| Oregon Public Employees Retirement Fund | 51,925 | $1.74M | 0.02% | −1,000−1.9% | Reduced |
| Cetera Investment Advisers | 51,259 | $1.72M | 0.00% | −17,374−25.3% | Reduced |
| CWM, LLC | 50,658 | $1.70M | 0.00% | +44,521+725.5% | Added |
| Citadel Advisors LLC | 50,593 | $1.70M | 0.00% | −948,776−94.9% | Reduced |
| WCM Investment Management, LLC | 47,266 | $1.61M | 0.00% | −34,750−42.4% | Reduced |
| Terra Alpha Investments LLC | 47,464 | $1.59M | 1.63% | −494−1.0% | Reduced |
| Elo Mutual Pension Insurance Co | 47,126 | $1.58M | 0.02% | +24,313+106.6% | Added |
| South Dakota Investment Council | 47,072 | $1.58M | 0.03% | −7,198−13.3% | Reduced |
| Northwest & Ethical Investments L.P. | 43,068 | $1.44M | 0.03% | −29,689−40.8% | Reduced |
| Atria Investments LLC | 42,374 | $1.42M | 0.02% | −5,134−10.8% | Reduced |
| Alberta Investment Management Corp | 42,000 | $1.41M | 0.01% | +42,000 | New |
| Davy Global Fund Management Ltd | 41,405 | $1.39M | 0.10% | +4,666+12.7% | Added |
| Nordea Investment Management AB | 40,921 | $1.38M | 0.00% | −6,637−14.0% | Reduced |
| Virginia Retirement Systems Et Al | 40,670 | $1.36M | 0.01% | +23,970+143.5% | Added |
| Radnor Capital Management, LLC | 40,020 | $1.34M | 0.20% | −5,600−12.3% | Reduced |
| Teacher Retirement System of Texas | 39,950 | $1.34M | 0.00% | −25,599−39.1% | Reduced |
| Victory Capital Management Inc | 39,341 | $1.32M | 0.00% | −238−0.6% | Reduced |
| Formula Growth Ltd | 39,050 | $1.31M | 0.50% | 00.0% | Unchanged |
| Oddo BHF Asset Management SAS | 38,384 | $1.29M | 0.05% | −1,687−4.2% | Reduced |
| Syon Capital LLC | 37,963 | $1.27M | 0.06% | +8,291+27.9% | Added |
| JustInvest LLC | 36,526 | $1.23M | 0.01% | +3,195+9.6% | Added |
| Bleakley Financial Group, LLC | 36,445 | $1.22M | 0.02% | +1,990+5.8% | Added |
| Vancity Investment Management Ltd | 35,603 | $1.19M | 0.16% | +1,392+4.1% | Added |
| Acadian Asset Management LLC | 35,206 | $1.18M | 0.00% | +26,952+326.5% | Added |
| Lecap Asset Management Ltd | 34,678 | $1.16M | 0.46% | +27,234+365.9% | Added |
| Whittier Trust Co | 32,915 | $1.14M | 0.01% | 00.0% | Unchanged |
| O'Shaughnessy Asset Management, LLC | 34,059 | $1.14M | 0.01% | −754−2.2% | Reduced |
| Xponance, Inc. | 34,040 | $1.14M | 0.01% | −4,952−12.7% | Reduced |
| Worldquant Millennium Advisors LLC | 33,708 | $1.13M | 0.00% | −16,236−32.5% | Reduced |
| Hunter Associates Investment Management LLC | 33,409 | $1.13M | 0.15% | +914+2.8% | Added |
| Fox Run Management, L.L.C. | 33,382 | $1.12M | 0.17% | −1,566−4.5% | Reduced |
| Alps Advisors Inc | 32,791 | $1.10M | 0.01% | +8,632+35.7% | Added |
| Tributary Capital Management, LLC | 32,235 | $1.08M | 0.11% | −512−1.6% | Reduced |
| Triglav Skladi, D.O.O. | 32,090 | $1.08M | 0.07% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 31,485 | $1.06M | 0.00% | −30,471−49.2% | Reduced |
| Magnetar Financial LLC | 30,856 | $1.03M | 0.01% | +30,856 | New |
| Taproot Management LP | 30,847 | $1.03M | 0.17% | +30,847 | New |
| Natixis Advisors, L.P. | 30,634 | $1.03M | 0.00% | −1,117−3.5% | Reduced |
| D.A. Davidson & Co. | 30,345 | $1.02M | 0.01% | −120−0.4% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 30,156 | $1.01M | 0.00% | +19,403+180.4% | Added |
| CAPROCK Group, Inc. | 29,665 | $995.0K | 0.02% | −16,491−35.7% | Reduced |
| Perigon Wealth Management, LLC | 29,400 | $986.1K | 0.02% | +29,400 | New |
| Legacy Wealth Asset Management, LLC | 29,385 | $985.6K | 0.24% | −885−2.9% | Reduced |
| Equitable Trust Co | 28,332 | $950.3K | 0.04% | +2,576+10.0% | Added |
| Jefferies Financial Group Inc. | 27,975 | $938.3K | 0.01% | +27,975 | New |
| Hillsdale Investment Management Inc. | 27,500 | $922.4K | 0.03% | +100+0.4% | Added |
| Sciencast Management LP | 27,222 | $913.0K | 0.13% | +3,832+16.4% | Added |
| Ridge Creek Global, Inc | 27,165 | $911.1K | 0.76% | +27,165 | New |
| Segall Bryant & Hamill, LLC | 26,498 | $888.7K | 0.01% | −650,965−96.1% | Reduced |
| State of Alaska, Department of Revenue | 25,947 | $870.0K | 0.01% | −2,235−7.9% | Reduced |
| Public Employees Retirement Association of Colorado | 25,946 | $870.0K | 0.00% | 00.0% | Unchanged |
| Capital Group Investment Management Pte. Ltd. | 25,906 | $868.9K | 0.14% | +1,366+5.6% | Added |
| Lazard Freres Gestion S.A.S. | 25,830 | $866.0K | 0.02% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 25,791 | $865.0K | 0.03% | −1,059−3.9% | Reduced |
| Coldstream Capital Management Inc | 25,169 | $844.2K | 0.01% | −2,179−8.0% | Reduced |
| Jacobs Levy Equity Management, Inc | 24,613 | $825.5K | 0.00% | −1,149,614−97.9% | Reduced |
| Inscription Capital, LLC | 24,582 | $824.5K | 0.08% | −14,061−36.4% | Reduced |
| Bailard, Inc. | 24,200 | $811.7K | 0.02% | −14,800−37.9% | Reduced |
| New York Life Investment Management LLC | 23,509 | $788.5K | 0.01% | −3,170−11.9% | Reduced |
| The PNC Financial Services Group, Inc. | 23,499 | $788.2K | 0.00% | +568+2.5% | Added |
| Harbour Investments, Inc. | 23,475 | $787.4K | 0.02% | +90.0% | Added |
| M&T Bank Corp | 23,411 | $785.6K | 0.00% | +3,423+17.1% | Added |
| XTX Topco Ltd | 23,091 | $774.5K | 0.02% | −43,951−65.6% | Reduced |
| Canada Pension Plan Investment Board | 22,200 | $744.6K | 0.00% | +19,600+753.8% | Added |
| Aaron Wealth Advisors | 22,170 | $743.6K | 0.04% | −8,952−28.8% | Reduced |
| Jain Global LLC | 21,963 | $736.6K | 0.01% | +21,963 | New |
| Ethic Inc. | 21,794 | $731.0K | 0.01% | −9,232−29.8% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 21,731 | $728.9K | 0.02% | −1,753−7.5% | Reduced |
| Chicago Partners Investment Group LLC | 19,506 | $721.2K | 0.02% | +1,488+8.3% | Added |
| First Wilshire Securities Management Inc | 21,500 | $721.1K | 0.18% | 00.0% | Unchanged |
| Havemeyer Place LP | 21,489 | $720.7K | 0.14% | +21,489 | New |
| Arkadios Wealth Advisors | 21,226 | $711.9K | 0.01% | −1,803−7.8% | Reduced |