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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 25,800,544 | $865.4M | 0.01% | −501,178−1.9% | Reduced |
| BlackRock, Inc. | 25,731,629 | $863.0M | 0.01% | +225,612+0.9% | Added |
| Pictet Asset Management Holding SA | 11,204,346 | $375.8M | 0.36% | −2,984,899−21.0% | Reduced |
| State Street Corp | 9,424,246 | $316.1M | 0.01% | −1,868,482−16.5% | Reduced |
| Capital International Investors | 9,016,577 | $302.4M | 0.05% | +1,936,902+27.4% | Added |
| Neuberger Berman Group LLC | 8,351,221 | $280.1M | 0.21% | −676,477−7.5% | Reduced |
| Sands Capital Management, LLC | 7,007,004 | $235.0M | 0.71% | −172,028−2.4% | Reduced |
| Amundi | 5,095,797 | $170.9M | 0.05% | −663,884−11.5% | Reduced |
| Geode Capital Management, LLC | 5,082,342 | $170.5M | 0.01% | +52,375+1.0% | Added |
| FIL Ltd | 4,667,958 | $156.6M | 0.12% | +381,708+8.9% | Added |
| Dimensional Fund Advisors LP | 3,676,680 | $123.3M | 0.03% | +83,419+2.3% | Added |
| Norges Bank | 3,433,575 | $115.2M | 0.01% | +3,433,575 | New |
| Impax Asset Management Group plc | 3,208,190 | $107.6M | 0.67% | +3,208,190 | New |
| LGT Group Foundation | 3,061,289 | $104.0M | 1.13% | +82,719+2.8% | Added |
| Alliancebernstein L.P. | 3,078,999 | $103.3M | 0.03% | −3,502,245−53.2% | Reduced |
| Fernbridge Capital Management LP | 3,066,841 | $102.9M | 5.05% | +2,051,175+202.0% | Added |
| AQR Capital Management LLC | 2,875,372 | $96.4M | 0.05% | +2,238,721+351.6% | Added |
| Ninety One UK Ltd | 2,802,991 | $94.0M | 0.20% | −67,253−2.3% | Reduced |
| Ameriprise Financial Inc | 2,613,627 | $87.7M | 0.02% | +77,609+3.1% | Added |
| Invesco Ltd. | 2,570,107 | $86.2M | 0.01% | +259,887+11.2% | Added |
| M&G Plc | 2,405,586 | $81.8M | 0.42% | −3,988−0.2% | Reduced |
| Bank of New York Mellon Corp | 2,356,548 | $79.0M | 0.01% | −279,651−10.6% | Reduced |
| Northern Trust Corp | 2,350,923 | $78.8M | 0.01% | −201,284−7.9% | Reduced |
| Robeco Schweiz AG | 2,347,104 | $78.7M | 1.76% | −31,916−1.3% | Reduced |
| Morgan Stanley | 2,320,740 | $77.8M | 0.00% | −60,656−2.5% | Reduced |
| Van Berkom & Associates Inc. | 2,292,595 | $76.9M | 2.22% | +227,525+11.0% | Added |
| Charles Schwab Investment Management Inc | 2,158,990 | $72.4M | 0.01% | +27,576+1.3% | Added |
| Aviva PLC | 2,039,264 | $68.4M | 0.12% | +95,029+4.9% | Added |
| Bank of America Corp | 2,019,711 | $67.7M | 0.00% | −992,340−32.9% | Reduced |
| Janus Henderson Group PLC | 1,961,290 | $65.8M | 0.03% | +188,426+10.6% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,826,067 | $61.2M | 0.09% | +45,299+2.5% | Added |
| Capital Research Global Investors | 1,775,766 | $59.6M | 0.01% | −11,337−0.6% | Reduced |
| Copeland Capital Management, LLC | 1,663,090 | $55.8M | 1.25% | −100,528−5.7% | Reduced |
| First Trust Advisors LP | 1,656,991 | $55.6M | 0.04% | −324,502−16.4% | Reduced |
| King Luther Capital Management Corp | 1,590,916 | $53.4M | 0.22% | −55,411−3.4% | Reduced |
| Allianz Asset Management GmbH | 1,586,886 | $53.2M | 0.06% | −134,320−7.8% | Reduced |
| Goldman Sachs Group Inc | 1,554,346 | $52.1M | 0.01% | −381,136−19.7% | Reduced |
| CI Private Wealth, LLC | 1,537,293 | $51.6M | 0.07% | −225,124−12.8% | Reduced |
| Quantinno Capital Management LP | 1,518,014 | $50.9M | 0.10% | −14,266−0.9% | Reduced |
| Standard Life Aberdeen plc | 1,499,337 | $50.3M | 0.08% | −4,970−0.3% | Reduced |
| Bessemer Group Inc | 1,395,039 | $46.8M | 0.07% | +10,440+0.8% | Added |
| Deutsche Bank AG | 1,385,807 | $46.5M | 0.02% | −830.0% | Reduced |
| PGGM Investments | 1,381,017 | $46.3M | 0.73% | +281,110+25.6% | Added |
| Nuveen, LLC | 1,216,328 | $40.8M | 0.01% | +689,217+130.8% | Added |
| Premier Fund Managers Ltd | 1,136,135 | $38.6M | 2.22% | −284,115−20.0% | Reduced |
| UBS Asset Management Americas Inc | 1,132,951 | $38.0M | 0.01% | −84,063−6.9% | Reduced |
| Neumeier Poma Investment Counsel LLC | 1,126,603 | $37.8M | 3.12% | +147,215+15.0% | Added |
| Wellington Management Group LLP | 1,055,274 | $35.4M | 0.01% | +2,343+0.2% | Added |
| Arrowstreet Capital, Limited Partnership | 1,022,252 | $34.3M | 0.02% | +272,496+36.3% | Added |
| BNP Paribas Arbitrage, SA | 1,002,076 | $33.6M | 0.02% | +242,735+32.0% | Added |
| Nomura Asset Management Co Ltd | 992,633 | $33.3M | 0.08% | +74,530+8.1% | Added |
| JPMorgan Chase & Co | 979,965 | $32.9M | 0.00% | −418,328−29.9% | Reduced |
| Wells Fargo & Company | 924,219 | $31.0M | 0.01% | +8,308+0.9% | Added |
| Value Holdings Management Co. LLC | 907,325 | $30.4M | 5.09% | 00.0% | Unchanged |
| Bank of Nova Scotia | 901,305 | $30.2M | 0.04% | +68,307+8.2% | Added |
| Royal Bank of Canada | 849,329 | $28.5M | 0.01% | −35,413−4.0% | Reduced |
| Managed Asset Portfolios, LLC | 845,280 | $28.4M | 3.42% | −24,353−2.8% | Reduced |
| Qube Research & Technologies Ltd | 834,712 | $28.0M | 0.04% | +834,712 | New |
| Robeco Institutional Asset Management B.V. | 739,904 | $24.8M | 0.04% | −31,614−4.1% | Reduced |
| D. E. Shaw & Co., Inc. | 720,789 | $24.2M | 0.02% | +644,064+839.4% | Added |
| iA Global Asset Management Inc. | 717,679 | $24.1M | 0.31% | −202,451−22.0% | Reduced |
| Rhumbline Advisers | 699,465 | $23.5M | 0.02% | −21,332−3.0% | Reduced |
| UBS Group AG | 665,738 | $22.3M | 0.00% | −524,375−44.1% | Reduced |
| Millennium Management LLC | 655,489 | $22.0M | 0.02% | −765,697−53.9% | Reduced |
| Schroder Investment Management Group | 642,451 | $21.8M | 0.02% | −302,252−32.0% | Reduced |
| Two Sigma Investments, LP | 636,749 | $21.4M | 0.03% | +144,447+29.3% | Added |
| Fisher Asset Management, LLC | 621,198 | $20.8M | 0.01% | −88,168−12.4% | Reduced |
| Tudor Investment Corp Et Al | 612,982 | $20.6M | 0.11% | +548,581+851.8% | Added |
| HSBC Holdings PLC | 589,538 | $19.9M | 0.01% | +144,531+32.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 578,456 | $19.4M | 0.05% | +198,505+52.2% | Added |
| Envestnet Asset Management Inc | 566,801 | $19.0M | 0.01% | −187,816−24.9% | Reduced |
| Principal Financial Group Inc | 562,301 | $18.9M | 0.01% | −21,191−3.6% | Reduced |
| Rockefeller Capital Management L.P. | 555,452 | $18.6M | 0.03% | −22,125−3.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 523,199 | $17.5M | 0.04% | −1,216,978−69.9% | Reduced |
| California Public Employees Retirement System | 517,368 | $17.4M | 0.01% | −11,633−2.2% | Reduced |
| Handelsbanken Fonder AB | 516,043 | $17.3M | 0.05% | +268,420+108.4% | Added |
| Renaissance Technologies LLC | 508,700 | $17.1M | 0.03% | +1,000+0.2% | Added |
| Swiss National Bank | 492,300 | $16.5M | 0.01% | +6,900+1.4% | Added |
| Retirement Systems of Alabama | 473,610 | $15.9M | 0.05% | −3,965−0.8% | Reduced |
| Ci Investments Inc. | 467,127 | $15.7M | 0.07% | −7,362−1.6% | Reduced |
| one8zero8, LLC | 460,446 | $15.4M | 3.37% | −7,300−1.6% | Reduced |
| Gotham Asset Management, LLC | 453,470 | $15.2M | 0.06% | −33,399−6.9% | Reduced |
| Winslow Asset Management Inc | 441,600 | $14.8M | 2.73% | −1,101−0.2% | Reduced |
| Algert Global LLC | 439,534 | $14.7M | 0.23% | +127,145+40.7% | Added |
| Baillie Gifford & Co | 428,775 | $14.4M | 0.01% | −94,375−18.0% | Reduced |
| Erste Asset Management GmbH | 418,010 | $14.3M | 0.12% | +250,310+149.3% | Added |
| Ninety One North America, Inc. | 415,535 | $13.9M | 0.56% | +11,440+2.8% | Added |
| Price T Rowe Associates Inc | 413,523 | $13.9M | 0.00% | +18,676+4.7% | Added |
| Sarasin & Partners LLP | 411,062 | $13.8M | 0.14% | +1,339+0.3% | Added |
| Barclays PLC | 407,498 | $13.7M | 0.01% | +5,638+1.4% | Added |
| Voloridge Investment Management, LLC | 397,500 | $13.3M | 0.05% | +365,171+1,129.5% | Added |
| Trillium Asset Management, LLC | 391,329 | $13.3M | 0.41% | −27,392−6.5% | Reduced |
| Legal & General Group Plc | 383,220 | $12.9M | 0.00% | −39,979−9.4% | Reduced |
| Man Group plc | 379,293 | $12.7M | 0.02% | +358,066+1,686.8% | Added |
| Nicola Wealth Management Ltd. | 365,000 | $12.2M | 1.11% | +365,000 | New |
| FMR LLC | 353,230 | $11.8M | 0.00% | +13,892+4.1% | Added |
| LPL Financial LLC | 346,019 | $11.6M | 0.00% | −150,798−30.4% | Reduced |
| Osprey Private Wealth LLC | 344,025 | $11.5M | 3.32% | +38,550+12.6% | Added |
| Mackenzie Financial Corp | 331,969 | $11.3M | 0.01% | −20,398−5.8% | Reduced |
| Van Eck Associates Corp | 331,355 | $11.1M | 0.01% | +10,402+3.2% | Added |