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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 26,301,722 | $878.0M | 0.01% | −279,459−1.1% | Reduced |
| BlackRock, Inc. | 25,506,017 | $851.4M | 0.01% | −189,476−0.7% | Reduced |
| Pictet Asset Management Holding SA | 14,189,245 | $473.6M | 0.46% | +341,144+2.5% | Added |
| State Street Corp | 11,292,728 | $377.0M | 0.01% | −649,011−5.4% | Reduced |
| Neuberger Berman Group LLC | 9,027,698 | $301.3M | 0.22% | +124,570+1.4% | Added |
| Sands Capital Management, LLC | 7,179,032 | $239.6M | 0.66% | +1,978,697+38.0% | Added |
| Capital International Investors | 7,079,675 | $236.3M | 0.04% | +5,051,485+249.1% | Added |
| Alliancebernstein L.P. | 6,581,244 | $219.7M | 0.07% | +705,673+12.0% | Added |
| Amundi | 5,759,681 | $193.3M | 0.06% | −1,003,732−14.8% | Reduced |
| Geode Capital Management, LLC | 5,029,967 | $167.9M | 0.01% | +68,006+1.4% | Added |
| FIL Ltd | 4,286,250 | $143.1M | 0.11% | −366,149−7.9% | Reduced |
| Dimensional Fund Advisors LP | 3,593,261 | $119.9M | 0.03% | +48,163+1.4% | Added |
| Bank of America Corp | 3,012,051 | $100.5M | 0.01% | +42,406+1.4% | Added |
| LGT Group Foundation | 2,978,570 | $98.9M | 1.13% | +176,302+6.3% | Added |
| Ninety One UK Ltd | 2,870,244 | $95.8M | 0.21% | +78,332+2.8% | Added |
| Bank of New York Mellon Corp | 2,636,199 | $88.0M | 0.02% | +135,928+5.4% | Added |
| Northern Trust Corp | 2,552,207 | $85.2M | 0.01% | −43,497−1.7% | Reduced |
| Ameriprise Financial Inc | 2,536,018 | $84.7M | 0.02% | +139,037+5.8% | Added |
| M&G Plc | 2,409,574 | $79.5M | 0.42% | −6,938−0.3% | Reduced |
| Morgan Stanley | 2,381,396 | $79.5M | 0.00% | −313,270−11.6% | Reduced |
| Robeco Schweiz AG | 2,379,020 | $79.4M | 1.79% | −418,914−15.0% | Reduced |
| Invesco Ltd. | 2,310,220 | $77.1M | 0.01% | −219,965−8.7% | Reduced |
| Charles Schwab Investment Management Inc | 2,131,414 | $71.1M | 0.01% | +20,328+1.0% | Added |
| Van Berkom & Associates Inc. | 2,065,070 | $68.9M | 1.99% | +2,259+0.1% | Added |
| First Trust Advisors LP | 1,981,493 | $66.1M | 0.05% | +679,424+52.2% | Added |
| Aviva PLC | 1,944,235 | $64.9M | 0.12% | +951,724+95.9% | Added |
| Goldman Sachs Group Inc | 1,935,482 | $64.6M | 0.01% | +965,050+99.4% | Added |
| Capital Research Global Investors | 1,787,103 | $59.7M | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 1,780,768 | $59.4M | 0.10% | +24,338+1.4% | Added |
| Janus Henderson Group PLC | 1,772,864 | $59.2M | 0.03% | +1,665,639+1,553.4% | Added |
| Copeland Capital Management, LLC | 1,763,618 | $58.9M | 1.23% | −89,869−4.8% | Reduced |
| CI Private Wealth, LLC | 1,762,417 | $58.8M | 0.09% | −256,174−12.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,740,177 | $58.1M | 0.13% | −461,054−20.9% | Reduced |
| Allianz Asset Management GmbH | 1,721,206 | $57.5M | 0.07% | −298,366−14.8% | Reduced |
| King Luther Capital Management Corp | 1,646,327 | $55.0M | 0.23% | +3,170+0.2% | Added |
| Quantinno Capital Management LP | 1,532,280 | $51.1M | 0.14% | +740,131+93.4% | Added |
| Standard Life Aberdeen plc | 1,504,307 | $50.3M | 0.08% | −51,404−3.3% | Reduced |
| Premier Fund Managers Ltd | 1,420,250 | $47.8M | 1.96% | +114,588+8.8% | Added |
| Millennium Management LLC | 1,421,186 | $47.4M | 0.04% | +545,502+62.3% | Added |
| JPMorgan Chase & Co | 1,398,293 | $46.7M | 0.00% | +116,993+9.1% | Added |
| Deutsche Bank AG | 1,385,890 | $46.3M | 0.02% | +522,937+60.6% | Added |
| Bessemer Group Inc | 1,384,599 | $46.2M | 0.07% | +414,581+42.7% | Added |
| UBS Asset Management Americas Inc | 1,217,014 | $40.6M | 0.01% | −257,519−17.5% | Reduced |
| UBS Group AG | 1,190,113 | $39.7M | 0.01% | +164,756+16.1% | Added |
| Jacobs Levy Equity Management, Inc | 1,174,227 | $39.2M | 0.16% | −105,414−8.2% | Reduced |
| PGGM Investments | 1,099,907 | $36.7M | 0.59% | +268,174+32.2% | Added |
| Wellington Management Group LLP | 1,052,931 | $35.1M | 0.01% | −331,456−23.9% | Reduced |
| Fernbridge Capital Management LP | 1,015,666 | $33.9M | 1.65% | +72,243+7.7% | Added |
| Citadel Advisors LLC | 999,369 | $33.4M | 0.03% | −1,874,191−65.2% | Reduced |
| Neumeier Poma Investment Counsel LLC | 979,388 | $32.7M | 2.68% | +91,887+10.4% | Added |
| Schroder Investment Management Group | 944,703 | $31.8M | 0.02% | −121,089−11.4% | Reduced |
| iA Global Asset Management Inc. | 920,130 | $30.7M | 0.42% | −29,601−3.1% | Reduced |
| Nomura Asset Management Co Ltd | 918,103 | $30.6M | 0.08% | +53,214+6.2% | Added |
| Wells Fargo & Company | 915,911 | $30.6M | 0.01% | +620.0% | Added |
| Value Holdings Management Co. LLC | 907,325 | $30.3M | 4.85% | 00.0% | Unchanged |
| Royal Bank of Canada | 884,742 | $29.5M | 0.01% | −78,923−8.2% | Reduced |
| Managed Asset Portfolios, LLC | 869,633 | $29.0M | 3.59% | +14,067+1.6% | Added |
| Bank of Nova Scotia | 832,998 | $27.8M | 0.05% | +81,600+10.9% | Added |
| Robeco Institutional Asset Management B.V. | 771,518 | $25.8M | 0.04% | +121,020+18.6% | Added |
| BNP Paribas Arbitrage, SA | 759,341 | $25.3M | 0.02% | −10,307−1.3% | Reduced |
| Envestnet Asset Management Inc | 754,617 | $25.2M | 0.01% | +9,015+1.2% | Added |
| Arrowstreet Capital, Limited Partnership | 749,756 | $25.0M | 0.02% | −156,477−17.3% | Reduced |
| Bowen Hanes & Co Inc | 737,425 | $24.6M | 0.62% | −1,098,965−59.8% | Reduced |
| New York State Common Retirement Fund | 730,541 | $24.4M | 0.03% | +2,949+0.4% | Added |
| Rhumbline Advisers | 720,797 | $24.1M | 0.02% | −10,337−1.4% | Reduced |
| Fisher Asset Management, LLC | 709,366 | $23.7M | 0.01% | −16,258−2.2% | Reduced |
| Segall Bryant & Hamill, LLC | 677,463 | $22.6M | 0.30% | −240,448−26.2% | Reduced |
| AQR Capital Management LLC | 636,651 | $21.3M | 0.01% | +371,823+140.4% | Added |
| Allspring Global Investments Holdings, LLC | 618,862 | $20.5M | 0.03% | −361,449−36.9% | Reduced |
| Principal Financial Group Inc | 583,492 | $19.5M | 0.01% | −14,861−2.5% | Reduced |
| Rockefeller Capital Management L.P. | 577,577 | $19.3M | 0.04% | −145,453−20.1% | Reduced |
| Russell Investments Group, Ltd. | 533,390 | $17.8M | 0.02% | +35,545+7.1% | Added |
| California Public Employees Retirement System | 529,001 | $17.7M | 0.01% | +22,872+4.5% | Added |
| Nuveen, LLC | 527,111 | $17.6M | 0.00% | −385,793−42.3% | Reduced |
| Baillie Gifford & Co | 523,150 | $17.5M | 0.01% | −64,720−11.0% | Reduced |
| Renaissance Technologies LLC | 507,700 | $16.9M | 0.02% | +115,200+29.4% | Added |
| Los Angeles Capital Management LLC | 499,178 | $16.7M | 0.06% | +213,032+74.4% | Added |
| LPL Financial LLC | 496,817 | $16.6M | 0.00% | −47,078−8.7% | Reduced |
| TimesSquare Capital Management, LLC | 495,020 | $16.5M | 0.24% | −552,776−52.8% | Reduced |
| Two Sigma Investments, LP | 492,302 | $16.4M | 0.03% | +394,091+401.3% | Added |
| Gotham Asset Management, LLC | 486,869 | $16.3M | 0.07% | +388,071+392.8% | Added |
| Swiss National Bank | 485,400 | $16.2M | 0.01% | −1,100−0.2% | Reduced |
| Retirement Systems of Alabama | 477,575 | $15.9M | 0.05% | +51,748+12.2% | Added |
| Ci Investments Inc. | 474,489 | $15.8M | 0.06% | −22,987−4.6% | Reduced |
| SEI Investments Co | 468,993 | $15.7M | 0.02% | −21,805−4.4% | Reduced |
| one8zero8, LLC | 467,746 | $15.6M | 3.37% | +8,001+1.7% | Added |
| Candriam Luxembourg S.C.A. | 447,729 | $14.9M | 0.08% | −50,530−10.1% | Reduced |
| HSBC Holdings PLC | 445,007 | $14.9M | 0.01% | +80,489+22.1% | Added |
| Winslow Asset Management Inc | 442,701 | $14.8M | 2.77% | −5,161−1.2% | Reduced |
| Legal & General Group Plc | 423,199 | $14.1M | 0.00% | −17,062−3.9% | Reduced |
| Trillium Asset Management, LLC | 418,721 | $14.0M | 0.37% | −4,307−1.0% | Reduced |
| Sarasin & Partners LLP | 409,723 | $13.8M | 0.14% | −4,273,853−91.3% | Reduced |
| Ninety One North America, Inc. | 404,095 | $13.5M | 0.61% | +19,306+5.0% | Added |
| Barclays PLC | 401,860 | $13.4M | 0.00% | +168,918+72.5% | Added |
| Price T Rowe Associates Inc | 394,847 | $13.2M | 0.00% | +20,000+5.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 379,951 | $12.7M | 0.04% | +279,423+278.0% | Added |
| Jane Street Group, LLC | 371,879 | $12.4M | 0.01% | −188,683−33.7% | Reduced |
| Mackenzie Financial Corp | 352,367 | $11.8M | 0.01% | +352,367 | New |
| Thematics Asset Management | 345,750 | $11.5M | 0.52% | +30,000+9.5% | Added |
| La Banque Postale Asset Management SA | 345,230 | $11.5M | 0.14% | +140,219+68.4% | Added |