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, Q1 2026
Institutional positions in Tetra Tech Inc as of Mar 31, 2026. 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
- 593
- −10 vs. Q4 2025
- Shares held
- 243.5M
- +31.1M (+14.7%) vs. Q4 2025
- Total value
- $7.35B
- +$227.0M (+3.2%) vs. Q4 2025
- New holders
- 74
- 201 more added
- Sold out
- 84
- 230 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Universal- Beteiligungs- und Servicegesellschaft mbH | 81,959 | $2.47M | 0.00% | −53,572−39.5% | Reduced |
| S&T Bank | 82,482 | $2.48M | 0.93% | −29,552−26.4% | Reduced |
| Alpine Woods Capital Investors, LLC | 84,047 | $2.53M | 0.61% | −18,761−18.2% | Reduced |
| Moran Wealth Management, LLC | 84,145 | $2.53M | 0.08% | −81,923−49.3% | Reduced |
| XTX Topco Ltd | 84,940 | $2.56M | 0.04% | +61,849+267.8% | Added |
| State of New Jersey Common Pension Fund D | 85,427 | $2.57M | 0.01% | 00.0% | Unchanged |
| Lombard Odier Asset Management (Europe) Ltd | 86,962 | $2.62M | 0.14% | −17,936−17.1% | Reduced |
| Union Bancaire Privee, UBP SA | 90,344 | $2.69M | 0.05% | +194+0.2% | Added |
| Taproot Management LP | 89,364 | $2.69M | 0.51% | +58,517+189.7% | Added |
| One Capital Management, LLC | 91,196 | $2.75M | 0.08% | +20,156+28.4% | Added |
| Swiss Life Asset Management Ltd | 93,898 | $2.83M | 0.01% | −21,969−19.0% | Reduced |
| Los Angeles Capital Management LLC | 96,085 | $2.89M | 0.01% | −125,385−56.6% | Reduced |
| Zacks Investment Management | 96,757 | $2.91M | 0.02% | +9,865+11.4% | Added |
| Isthmus Partners, LLC | 98,876 | $2.98M | 0.31% | −12,761−11.4% | Reduced |
| Mutual of America Capital Management LLC | 99,948 | $3.01M | 0.03% | −8,847−8.1% | Reduced |
| Kingdon Capital Management, L.L.C. | 100,000 | $3.01M | 0.50% | −50,000−33.3% | Reduced |
| Louisbourg Investments Inc. | 119,970 | $3.02M | 0.57% | +119,970 | New |
| Edmond de Rothschild Holding S.A. | 100,325 | $3.02M | 0.04% | +8,172+8.9% | Added |
| Agf Management Ltd | 100,841 | $3.04M | 0.01% | +16,281+19.3% | Added |
| Nisa Investment Advisors, LLC | 102,084 | $3.07M | 0.01% | +239+0.2% | Added |
| Scholtz & Company, LLC | 103,195 | $3.11M | 1.59% | +103,195 | New |
| Vanguard Global Advisers, LLC | 104,773 | $3.16M | 0.00% | +104,773 | New |
| Kennedy Capital Management, Inc. | 105,288 | $3.17M | 0.07% | −1,309−1.2% | Reduced |
| State of Tennessee, Treasury Department | 109,250 | $3.29M | 0.01% | +5,655+5.5% | Added |
| Police & Firemen's Retirement System of New Jersey | 109,294 | $3.29M | 0.03% | −1,102−1.0% | Reduced |
| Asset Management One Co.,Ltd. | 110,981 | $3.34M | 0.01% | +12,885+13.1% | Added |
| Treasurer of the State of North Carolina | 111,245 | $3.35M | 0.01% | +1,243+1.1% | Added |
| First National Bank of Omaha | 115,593 | $3.48M | 0.11% | +17,862+18.3% | Added |
| Oak Thistle LLC | 117,586 | $3.54M | 0.34% | +117,586 | New |
| Amalgamated Bank | 118,784 | $3.58M | 0.03% | +880+0.7% | Added |
| Rock Point Advisors, LLC | 119,051 | $3.59M | 0.97% | +119,051 | New |
| Edgestream Partners, L.P. | 121,937 | $3.67M | 0.12% | +33,442+37.8% | Added |
| Rice Hall James & Associates, LLC | 122,955 | $3.70M | 0.21% | +27,117+28.3% | Added |
| Crown Advisors Management, Inc. | 125,000 | $3.77M | 2.50% | 00.0% | Unchanged |
| Mackenzie Financial Corp | 130,311 | $3.92M | 0.00% | −201,658−60.7% | Reduced |
| MetLife Investment Management | 130,461 | $3.93M | 0.02% | +356+0.3% | Added |
| Capital International Ltd | 133,039 | $4.01M | 0.15% | 00.0% | Unchanged |
| River Wealth Advisors LLC | 133,260 | $4.01M | 0.46% | −12,544−8.6% | Reduced |
| Public Sector Pension Investment Board | 134,888 | $4.06M | 0.01% | +134,888 | New |
| Caxton Associates LLP | 135,813 | $4.09M | 0.09% | +135,813 | New |
| Future Fund LLC | 137,347 | $4.14M | 1.45% | +48,535+54.6% | Added |
| Portman Square Capital LLP | 144,061 | $4.34M | 0.66% | −58,763−29.0% | Reduced |
| Advisors Asset Management, Inc. | 144,179 | $4.34M | 0.07% | +11,858+9.0% | Added |
| SFE Investment Counsel | 147,431 | $4.44M | 0.71% | +45,009+43.9% | Added |
| Bleakley Financial Group, LLC | 147,938 | $4.46M | 0.07% | +111,493+305.9% | Added |
| Great West Life Assurance Co | 150,735 | $4.54M | 0.01% | +3,896+2.7% | Added |
| Creative Planning | 151,623 | $4.57M | 0.00% | −35,723−19.1% | Reduced |
| LPL Financial LLC | 152,169 | $4.58M | 0.00% | −193,850−56.0% | Reduced |
| Crossmark Global Holdings, Inc. | 152,384 | $4.59M | 0.07% | −64,533−29.8% | Reduced |
| Blair William & Co | 158,442 | $4.77M | 0.01% | +34,925+28.3% | Added |
| Weiss Asset Management LP | 159,398 | $4.80M | 0.09% | +159,398 | New |
| Canada Pension Plan Investment Board | 160,200 | $4.83M | 0.00% | +138,000+621.6% | Added |
| Susquehanna International Group, LLP | 160,236 | $4.83M | 0.01% | +160,236 | New |
| Prudential Financial Inc | 164,220 | $4.95M | 0.01% | +147,675+892.6% | Added |
| La Banque Postale Asset Management SA | 174,171 | $5.25M | 0.07% | +167,239+2,412.6% | Added |
| Night Squared LP | 174,738 | $5.26M | 0.77% | +101,905+139.9% | Added |
| Raymond James Financial Inc | 177,867 | $5.36M | 0.00% | −344−0.2% | Reduced |
| Caisse de Depot Et Placement du Quebec | 181,185 | $5.46M | 0.01% | +181,185 | New |
| Two Sigma Investments, LP | 183,765 | $5.54M | 0.00% | −452,984−71.1% | Reduced |
| New York State Common Retirement Fund | 186,057 | $5.60M | 0.01% | +6,967+3.9% | Added |
| Manufacturers Life Insurance Company, The | 186,263 | $5.61M | 0.00% | −4,519−2.4% | Reduced |
| Vanguard Asset Management, Ltd | 189,947 | $5.72M | 0.00% | +189,947 | New |
| Gotham Asset Management, LLC | 195,026 | $5.87M | 0.02% | −258,444−57.0% | Reduced |
| Algert Global LLC | 202,109 | $6.09M | 0.09% | −237,425−54.0% | Reduced |
| Nicholas Company, Inc. | 204,305 | $6.15M | 0.12% | −9,970−4.7% | Reduced |
| AlpenGlobal Capital LLC | 107,315 | $6.23M | 3.96% | +107,315 | New |
| Jane Street Group, LLC | 206,806 | $6.23M | 0.01% | −48,028−18.8% | Reduced |
| State Board of Administration of Florida Retirement System | 208,583 | $6.28M | 0.01% | 00.0% | Unchanged |
| Duff & Phelps Investment Management Co | 211,038 | $6.36M | 0.07% | +82,390+64.0% | Added |
| Capital International Sarl | 211,477 | $6.37M | 0.10% | +4,244+2.0% | Added |
| Bridgewater Associates, LP | 213,945 | $6.44M | 0.03% | +149,644+232.7% | Added |
| Dana Investment Advisors, Inc. | 215,080 | $6.48M | 0.19% | −482−0.2% | Reduced |
| Man Group plc | 217,545 | $6.55M | 0.01% | −161,748−42.6% | Reduced |
| GHP Investment Advisors, Inc. | 226,439 | $6.82M | 0.28% | −5,915−2.5% | Reduced |
| HBK Investments L P | 239,028 | $7.20M | 0.09% | +162,628+212.9% | Added |
| Y-Intercept (Hong Kong) Ltd | 244,492 | $7.36M | 0.14% | +106,792+77.6% | Added |
| Bank of Montreal | 252,278 | $7.60M | 0.00% | −35,830−12.4% | Reduced |
| Williams Jones Wealth Management, LLC. | 256,290 | $7.72M | 0.09% | +78,230+43.9% | Added |
| Candriam Luxembourg S.C.A. | 259,365 | $7.81M | 0.04% | +35,170+15.7% | Added |
| Bahl & Gaynor Inc | 260,957 | $7.86M | 0.04% | +33,762+14.9% | Added |
| New York State Teachers Retirement System | 264,667 | $7.97M | 0.02% | +16,622+6.7% | Added |
| Millennium Management LLC | 266,573 | $8.03M | 0.01% | −388,916−59.3% | Reduced |
| DekaBank Deutsche Girozentrale | 279,017 | $8.44M | 0.01% | 00.0% | Unchanged |
| Systematic Financial Management LP | 286,651 | $8.63M | 0.20% | −1210.0% | Reduced |
| California State Teachers Retirement System | 290,497 | $8.75M | 0.01% | +52,423+22.0% | Added |
| Renaissance Investment Group LLC | 295,017 | $8.89M | 1.91% | +2,869+1.0% | Added |
| State of Wisconsin Investment Board | 298,905 | $9.00M | 0.02% | −16,928−5.4% | Reduced |
| Intech Investment Management LLC | 309,511 | $9.32M | 0.09% | +218,967+241.8% | Added |
| Nomura Asset Management International Inc. | 311,391 | $9.38M | 0.02% | −2,904−0.9% | Reduced |
| Baillie Gifford & Co | 313,565 | $9.44M | 0.01% | −115,210−26.9% | Reduced |
| SEI Investments Co | 315,284 | $9.49M | 0.01% | +42,759+15.7% | Added |
| FMR LLC | 328,252 | $9.89M | 0.00% | −24,978−7.1% | Reduced |
| Russell Investments Group, Ltd. | 329,945 | $9.94M | 0.01% | +116,961+54.9% | Added |
| Van Eck Associates Corp | 346,973 | $10.5M | 0.01% | +15,618+4.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 349,077 | $10.5M | 0.02% | −229,379−39.7% | Reduced |
| Voloridge Investment Management, LLC | 355,820 | $10.7M | 0.04% | −41,680−10.5% | Reduced |
| Osprey Private Wealth LLC | 363,415 | $10.9M | 3.17% | +19,390+5.6% | Added |
| Copeland Capital Management, LLC | 365,884 | $11.0M | 0.25% | −1,297,206−78.0% | Reduced |
| Perpetual Ltd | 372,005 | $11.2M | 0.17% | +48,351+14.9% | Added |
| SEB Asset Management AB | 374,020 | $11.3M | 0.05% | +374,020 | New |