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 |
|---|---|---|---|---|---|
| MML Investors Services, LLC | 19,762 | $662.8K | 0.00% | −6,093−23.6% | Reduced |
| Baird Financial Group, Inc. | 20,099 | $674.1K | 0.00% | −5,245−20.7% | Reduced |
| Massar Capital Management, LP | 20,218 | $678.1K | 0.13% | +20,218 | New |
| Commonwealth Equity Services, LLC | 20,486 | $687.1K | 0.00% | −2,155−9.5% | Reduced |
| Voya Investment Management LLC | 20,553 | $689.3K | 0.00% | −2,468−10.7% | Reduced |
| US Bancorp | 20,636 | $692.1K | 0.00% | +1,587+8.3% | Added |
| First National Advisers, LLC | 20,675 | $693.4K | 0.10% | −991−4.6% | Reduced |
| Trium Capital LLP | 20,810 | $698.0K | 0.54% | +7,138+52.2% | Added |
| Evexia Wealth LLC | 19,497 | $710.3K | 0.20% | +1,092+5.9% | Added |
| Arkadios Wealth Advisors | 21,226 | $711.9K | 0.01% | −1,803−7.8% | Reduced |
| Havemeyer Place LP | 21,489 | $720.7K | 0.14% | +21,489 | New |
| First Wilshire Securities Management Inc | 21,500 | $721.1K | 0.18% | 00.0% | Unchanged |
| Chicago Partners Investment Group LLC | 19,506 | $721.2K | 0.02% | +1,488+8.3% | Added |
| U.S. Capital Wealth Advisors, LLC | 21,731 | $728.9K | 0.02% | −1,753−7.5% | Reduced |
| Ethic Inc. | 21,794 | $731.0K | 0.01% | −9,232−29.8% | Reduced |
| Jain Global LLC | 21,963 | $736.6K | 0.01% | +21,963 | New |
| Aaron Wealth Advisors | 22,170 | $743.6K | 0.04% | −8,952−28.8% | Reduced |
| Canada Pension Plan Investment Board | 22,200 | $744.6K | 0.00% | +19,600+753.8% | Added |
| XTX Topco Ltd | 23,091 | $774.5K | 0.02% | −43,951−65.6% | Reduced |
| M&T Bank Corp | 23,411 | $785.6K | 0.00% | +3,423+17.1% | Added |
| Harbour Investments, Inc. | 23,475 | $787.4K | 0.02% | +90.0% | Added |
| The PNC Financial Services Group, Inc. | 23,499 | $788.2K | 0.00% | +568+2.5% | Added |
| New York Life Investment Management LLC | 23,509 | $788.5K | 0.01% | −3,170−11.9% | Reduced |
| Bailard, Inc. | 24,200 | $811.7K | 0.02% | −14,800−37.9% | Reduced |
| Inscription Capital, LLC | 24,582 | $824.5K | 0.08% | −14,061−36.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 24,613 | $825.5K | 0.00% | −1,149,614−97.9% | Reduced |
| Coldstream Capital Management Inc | 25,169 | $844.2K | 0.01% | −2,179−8.0% | Reduced |
| Quadrant Capital Group LLC | 25,791 | $865.0K | 0.03% | −1,059−3.9% | Reduced |
| Lazard Freres Gestion S.A.S. | 25,830 | $866.0K | 0.02% | 00.0% | Unchanged |
| Capital Group Investment Management Pte. Ltd. | 25,906 | $868.9K | 0.14% | +1,366+5.6% | Added |
| 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 |
| Segall Bryant & Hamill, LLC | 26,498 | $888.7K | 0.01% | −650,965−96.1% | Reduced |
| Ridge Creek Global, Inc | 27,165 | $911.1K | 0.76% | +27,165 | New |
| Sciencast Management LP | 27,222 | $913.0K | 0.13% | +3,832+16.4% | Added |
| Hillsdale Investment Management Inc. | 27,500 | $922.4K | 0.03% | +100+0.4% | Added |
| Jefferies Financial Group Inc. | 27,975 | $938.3K | 0.01% | +27,975 | New |
| Equitable Trust Co | 28,332 | $950.3K | 0.04% | +2,576+10.0% | Added |
| Legacy Wealth Asset Management, LLC | 29,385 | $985.6K | 0.24% | −885−2.9% | Reduced |
| Perigon Wealth Management, LLC | 29,400 | $986.1K | 0.02% | +29,400 | New |
| CAPROCK Group, Inc. | 29,665 | $995.0K | 0.02% | −16,491−35.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 30,156 | $1.01M | 0.00% | +19,403+180.4% | Added |
| D.A. Davidson & Co. | 30,345 | $1.02M | 0.01% | −120−0.4% | Reduced |
| Natixis Advisors, L.P. | 30,634 | $1.03M | 0.00% | −1,117−3.5% | Reduced |
| Taproot Management LP | 30,847 | $1.03M | 0.17% | +30,847 | New |
| Magnetar Financial LLC | 30,856 | $1.03M | 0.01% | +30,856 | New |
| Federated Hermes, Inc. | 31,485 | $1.06M | 0.00% | −30,471−49.2% | Reduced |
| Triglav Skladi, D.O.O. | 32,090 | $1.08M | 0.07% | 00.0% | Unchanged |
| Tributary Capital Management, LLC | 32,235 | $1.08M | 0.11% | −512−1.6% | Reduced |
| Alps Advisors Inc | 32,791 | $1.10M | 0.01% | +8,632+35.7% | Added |
| Fox Run Management, L.L.C. | 33,382 | $1.12M | 0.17% | −1,566−4.5% | Reduced |
| Hunter Associates Investment Management LLC | 33,409 | $1.13M | 0.15% | +914+2.8% | Added |
| Worldquant Millennium Advisors LLC | 33,708 | $1.13M | 0.00% | −16,236−32.5% | Reduced |
| Xponance, Inc. | 34,040 | $1.14M | 0.01% | −4,952−12.7% | Reduced |
| O'Shaughnessy Asset Management, LLC | 34,059 | $1.14M | 0.01% | −754−2.2% | Reduced |
| Whittier Trust Co | 32,915 | $1.14M | 0.01% | 00.0% | Unchanged |
| Lecap Asset Management Ltd | 34,678 | $1.16M | 0.46% | +27,234+365.9% | Added |
| Acadian Asset Management LLC | 35,206 | $1.18M | 0.00% | +26,952+326.5% | Added |
| Vancity Investment Management Ltd | 35,603 | $1.19M | 0.16% | +1,392+4.1% | Added |
| Bleakley Financial Group, LLC | 36,445 | $1.22M | 0.02% | +1,990+5.8% | Added |
| JustInvest LLC | 36,526 | $1.23M | 0.01% | +3,195+9.6% | Added |
| Syon Capital LLC | 37,963 | $1.27M | 0.06% | +8,291+27.9% | Added |
| Oddo BHF Asset Management SAS | 38,384 | $1.29M | 0.05% | −1,687−4.2% | Reduced |
| Formula Growth Ltd | 39,050 | $1.31M | 0.50% | 00.0% | Unchanged |
| Victory Capital Management Inc | 39,341 | $1.32M | 0.00% | −238−0.6% | Reduced |
| Teacher Retirement System of Texas | 39,950 | $1.34M | 0.00% | −25,599−39.1% | Reduced |
| Radnor Capital Management, LLC | 40,020 | $1.34M | 0.20% | −5,600−12.3% | Reduced |
| Virginia Retirement Systems Et Al | 40,670 | $1.36M | 0.01% | +23,970+143.5% | Added |
| Nordea Investment Management AB | 40,921 | $1.38M | 0.00% | −6,637−14.0% | Reduced |
| Davy Global Fund Management Ltd | 41,405 | $1.39M | 0.10% | +4,666+12.7% | Added |
| Alberta Investment Management Corp | 42,000 | $1.41M | 0.01% | +42,000 | New |
| Atria Investments LLC | 42,374 | $1.42M | 0.02% | −5,134−10.8% | Reduced |
| Northwest & Ethical Investments L.P. | 43,068 | $1.44M | 0.03% | −29,689−40.8% | Reduced |
| South Dakota Investment Council | 47,072 | $1.58M | 0.03% | −7,198−13.3% | Reduced |
| Elo Mutual Pension Insurance Co | 47,126 | $1.58M | 0.02% | +24,313+106.6% | Added |
| Terra Alpha Investments LLC | 47,464 | $1.59M | 1.63% | −494−1.0% | Reduced |
| WCM Investment Management, LLC | 47,266 | $1.61M | 0.00% | −34,750−42.4% | Reduced |
| Citadel Advisors LLC | 50,593 | $1.70M | 0.00% | −948,776−94.9% | Reduced |
| CWM, LLC | 50,658 | $1.70M | 0.00% | +44,521+725.5% | Added |
| Cetera Investment Advisers | 51,259 | $1.72M | 0.00% | −17,374−25.3% | Reduced |
| Oregon Public Employees Retirement Fund | 51,925 | $1.74M | 0.02% | −1,000−1.9% | Reduced |
| Summit Trail Advisors, LLC | 52,785 | $1.77M | 0.03% | −18,244−25.7% | Reduced |
| Numerai GP LLC | 52,930 | $1.78M | 0.21% | +52,930 | New |
| New Mexico Educational Retirement Board | 54,500 | $1.83M | 0.05% | 00.0% | Unchanged |
| Horizon Investments, LLC | 55,691 | $1.87M | 0.02% | +55,691 | New |
| Brinker Capital Investments, LLC | 58,197 | $1.95M | 0.01% | +6,713+13.0% | Added |
| Northwestern Mutual Investment Management Company, LLC | 58,489 | $1.96M | 0.02% | −82−0.1% | Reduced |
| New Age Alpha Advisors, LLC | 58,868 | $1.97M | 0.09% | +2,840+5.1% | Added |
| Thrivent Financial for Lutherans | 59,337 | $1.99M | 0.00% | −1,505−2.5% | Reduced |
| Exchange Traded Concepts, LLC | 60,750 | $2.04M | 0.02% | −1,628−2.6% | Reduced |
| State of Michigan Retirement System | 61,740 | $2.07M | 0.01% | −800−1.3% | Reduced |
| Daiwa Securities Group Inc. | 62,600 | $2.10M | 0.01% | −15,919−20.3% | Reduced |
| KLP Kapitalforvaltning AS | 62,700 | $2.10M | 0.01% | +10,200+19.4% | Added |
| Aquatic Capital Management LLC | 63,634 | $2.13M | 0.06% | −123,254−66.0% | Reduced |
| Bridgefront Capital, LLC | 63,878 | $2.14M | 0.54% | +63,878 | New |
| Bridgewater Associates, LP | 64,301 | $2.16M | 0.01% | +64,301 | New |
| D'Orazio & Associates, Inc. | 65,395 | $2.19M | 0.28% | −13,509−17.1% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 65,418 | $2.19M | 0.01% | −2,022−3.0% | Reduced |
| Ameritas Investment Partners, Inc. | 66,850 | $2.24M | 0.07% | −3,097−4.4% | Reduced |
| Captrust Financial Advisors | 67,079 | $2.25M | 0.00% | +16,335+32.2% | Added |