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, Q2 2026
Institutional positions in Tetra Tech Inc as of Jun 30, 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
- 555
- −32 vs. Q1 2026
- Shares held
- 253.3M
- +10.9M (+4.5%) vs. Q1 2026
- Total value
- $7.32B
- +$6.63M (+0.1%) vs. Q1 2026
- New holders
- 54
- 206 more added
- Sold out
- 86
- 214 more reduced
6 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Edmond de Rothschild Holding S.A. | 107,892 | $3.12M | 0.04% | +7,567+7.5% | Added |
| Portman Square Capital LLP | 113,409 | $3.28M | 0.56% | −30,652−21.3% | Reduced |
| River Wealth Advisors LLC | 116,271 | $3.36M | 0.35% | −16,989−12.7% | Reduced |
| Louisbourg Investments Inc. | 147,261 | $3.36M | 0.62% | +27,291+22.7% | Added |
| Police & Firemen's Retirement System of New Jersey | 116,707 | $3.37M | 0.03% | +7,413+6.8% | Added |
| Amalgamated Bank | 116,898 | $3.38M | 0.02% | −1,886−1.6% | Reduced |
| Rice Hall James & Associates, LLC | 122,112 | $3.53M | 0.17% | −843−0.7% | Reduced |
| MetLife Investment Management | 124,960 | $3.61M | 0.02% | −5,501−4.2% | Reduced |
| Crown Advisors Management, Inc. | 125,000 | $3.61M | 1.98% | 00.0% | Unchanged |
| Capital International Ltd | 133,039 | $3.84M | 0.13% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 134,670 | $3.89M | 0.02% | +93,800+229.5% | Added |
| Susquehanna International Group, LLP | 135,137 | $3.90M | 0.00% | −25,099−15.7% | Reduced |
| Crossmark Global Holdings, Inc. | 135,317 | $3.91M | 0.05% | −17,067−11.2% | Reduced |
| Treasurer of the State of North Carolina | 139,189 | $4.02M | 0.01% | +27,944+25.1% | Added |
| Russell Investments Group, Ltd. | 139,498 | $4.03M | 0.00% | −190,447−57.7% | Reduced |
| Creative Planning | 140,335 | $4.05M | 0.00% | −11,288−7.4% | Reduced |
| Bleakley Financial Group, LLC | 143,737 | $4.15M | 0.05% | −4,201−2.8% | Reduced |
| Future Fund LLC | 143,967 | $4.16M | 1.19% | +6,620+4.8% | Added |
| Great West Life Assurance Co | 147,472 | $4.26M | 0.01% | −3,263−2.2% | Reduced |
| Rock Point Advisors, LLC | 151,137 | $4.37M | 1.07% | +32,086+27.0% | Added |
| Two Sigma Investments, LP | 154,365 | $4.46M | 0.00% | −29,400−16.0% | Reduced |
| Bahl & Gaynor Inc | 154,884 | $4.47M | 0.02% | −106,073−40.6% | Reduced |
| Blair William & Co | 157,326 | $4.55M | 0.01% | −1,116−0.7% | Reduced |
| Voya Investment Management LLC | 162,155 | $4.68M | 0.00% | +103,415+176.1% | Added |
| Holocene Advisors, LP | 162,164 | $4.68M | 0.01% | +162,164 | New |
| New York State Common Retirement Fund | 170,257 | $4.92M | 0.01% | −15,800−8.5% | Reduced |
| SFE Investment Counsel | 176,857 | $5.11M | 0.70% | +29,426+20.0% | Added |
| Y-Intercept (Hong Kong) Ltd | 184,885 | $5.34M | 0.11% | −59,607−24.4% | Reduced |
| Manufacturers Life Insurance Company, The | 187,838 | $5.43M | 0.00% | +1,575+0.8% | Added |
| Raymond James Financial Inc | 190,245 | $5.50M | 0.00% | +12,378+7.0% | Added |
| Duff & Phelps Investment Management Co | 193,486 | $5.59M | 0.05% | −17,552−8.3% | Reduced |
| Advisors Asset Management, Inc. | 193,625 | $5.59M | 0.09% | +49,446+34.3% | Added |
| AlpenGlobal Capital LLC | 103,668 | $5.73M | 3.67% | −3,647−3.4% | Reduced |
| Vanguard Asset Management, Ltd | 202,270 | $5.84M | 0.00% | +12,323+6.5% | Added |
| Nicholas Company, Inc. | 204,390 | $5.90M | 0.11% | +850.0% | Added |
| State Board of Administration of Florida Retirement System | 204,583 | $5.91M | 0.01% | −4,000−1.9% | Reduced |
| Dana Investment Advisors, Inc. | 211,613 | $6.11M | 0.16% | −3,467−1.6% | Reduced |
| GHP Investment Advisors, Inc. | 216,113 | $6.24M | 0.23% | −10,326−4.6% | Reduced |
| Capital International Sarl | 221,429 | $6.40M | 0.09% | +9,952+4.7% | Added |
| Citigroup Inc | 221,604 | $6.40M | 0.00% | +167,998+313.4% | Added |
| Rockefeller Capital Management L.P. | 223,673 | $6.46M | 0.01% | −402,860−64.3% | Reduced |
| Jupiter Topco LLC | 231,029 | $6.67M | 0.00% | +231,029 | New |
| Bank of Montreal | 235,638 | $6.81M | 0.00% | −16,640−6.6% | Reduced |
| SEI Investments Co | 249,271 | $7.20M | 0.01% | −66,013−20.9% | Reduced |
| Candriam Luxembourg S.C.A. | 251,587 | $7.26M | 0.03% | −7,778−3.0% | Reduced |
| New York State Teachers Retirement System | 263,019 | $7.60M | 0.01% | −1,648−0.6% | Reduced |
| Foresight Group Ltd Liability Partnership | 269,580 | $7.68M | 1.38% | +269,580 | New |
| Public Sector Pension Investment Board | 277,517 | $8.02M | 0.02% | +142,629+105.7% | Added |
| Man Group plc | 279,108 | $8.06M | 0.01% | +61,563+28.3% | Added |
| State of Wisconsin Investment Board | 279,367 | $8.07M | 0.02% | −19,538−6.5% | Reduced |
| DekaBank Deutsche Girozentrale | 279,017 | $8.27M | 0.01% | 00.0% | Unchanged |
| California State Teachers Retirement System | 289,716 | $8.37M | 0.01% | −781−0.3% | Reduced |
| Renaissance Investment Group LLC | 293,841 | $8.49M | 1.67% | −1,176−0.4% | Reduced |
| Nomura Asset Management International Inc. | 301,601 | $8.71M | 0.01% | −9,790−3.1% | Reduced |
| Prudential Financial Inc | 305,545 | $8.83M | 0.01% | +141,325+86.1% | Added |
| Canada Pension Plan Investment Board | 319,600 | $9.23M | 0.01% | +159,400+99.5% | Added |
| Intech Investment Management LLC | 334,455 | $9.66M | 0.09% | +24,944+8.1% | Added |
| Alliancebernstein L.P. | 335,361 | $10.1M | 0.00% | −2,472,104−88.1% | Reduced |
| Van Eck Associates Corp | 352,058 | $10.2M | 0.01% | +5,085+1.5% | Added |
| Osprey Private Wealth LLC | 363,295 | $10.5M | 2.71% | −1200.0% | Reduced |
| Envestnet Asset Management Inc | 373,426 | $10.8M | 0.00% | −46,846−11.1% | Reduced |
| Mackenzie Financial Corp | 401,964 | $11.6M | 0.01% | +271,653+208.5% | Added |
| Premier Fund Managers Ltd | 408,394 | $11.8M | 1.07% | −397,195−49.3% | Reduced |
| Nicola Wealth Management Ltd. | 411,000 | $11.9M | 1.37% | 00.0% | Unchanged |
| Algert Global LLC | 415,099 | $12.0M | 0.14% | +212,990+105.4% | Added |
| Voloridge Investment Management, LLC | 419,712 | $12.1M | 0.05% | +63,892+18.0% | Added |
| Perpetual Ltd | 426,947 | $12.3M | 0.18% | +54,942+14.8% | Added |
| Retirement Systems of Alabama | 428,289 | $12.4M | 0.04% | −51,315−10.7% | Reduced |
| Winslow Asset Management Inc | 437,305 | $12.6M | 2.20% | +4,767+1.1% | Added |
| one8zero8, LLC | 440,672 | $12.7M | 2.52% | −10,800−2.4% | Reduced |
| Barclays PLC | 440,903 | $12.7M | 0.00% | −3,094−0.7% | Reduced |
| Handelsbanken Fonder AB | 449,922 | $13.0M | 0.04% | +31,147+7.4% | Added |
| SG Americas Securities, LLC | 451,073 | $13.0M | 0.01% | +15,898+3.7% | Added |
| Balyasny Asset Management LLC | 456,640 | $13.2M | 0.02% | +22,169+5.1% | Added |
| Sarasin & Partners LLP | 472,902 | $13.7M | 0.16% | +36,732+8.4% | Added |
| Systematic Financial Management LP | 481,101 | $13.9M | 0.28% | +194,450+67.8% | Added |
| Ninety One North America, Inc. | 485,767 | $14.0M | 0.66% | +72,618+17.6% | Added |
| Swiss National Bank | 497,200 | $14.4M | 0.01% | +6,200+1.3% | Added |
| HRT Financial LP | 502,154 | $14.5M | 0.03% | +502,154 | New |
| California Public Employees Retirement System | 528,661 | $15.3M | 0.01% | +30,416+6.1% | Added |
| King Luther Capital Management Corp | 569,160 | $16.4M | 0.07% | −1,216,305−68.1% | Reduced |
| Schroder Investment Management Group | 578,614 | $16.7M | 0.01% | −286,175−33.1% | Reduced |
| Principal Financial Group Inc | 589,240 | $17.0M | 0.01% | +5,988+1.0% | Added |
| Bridgewater Associates, LP | 608,211 | $17.6M | 0.07% | +394,266+184.3% | Added |
| HSBC Holdings PLC | 628,625 | $18.0M | 0.01% | +197,653+45.9% | Added |
| Bank of Nova Scotia | 629,088 | $18.2M | 0.03% | +39,634+6.7% | Added |
| Squarepoint Ops LLC | 641,945 | $18.5M | 0.04% | +224,602+53.8% | Added |
| Fisher Asset Management, LLC | 647,795 | $18.7M | 0.01% | +35,193+5.7% | Added |
| Trillium Asset Management, LLC | 647,910 | $18.7M | 0.58% | +47,525+7.9% | Added |
| Mirova | 669,611 | $19.3M | 0.71% | +57,889+9.5% | Added |
| Rhumbline Advisers | 693,805 | $20.0M | 0.02% | −19,962−2.8% | Reduced |
| Gotham Asset Management, LLC | 708,634 | $20.5M | 0.05% | +513,608+263.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 712,884 | $20.6M | 0.04% | +110,216+18.3% | Added |
| Robeco Institutional Asset Management B.V. | 743,831 | $21.5M | 0.03% | +36,702+5.2% | Added |
| Price T Rowe Associates Inc | 767,634 | $22.2M | 0.00% | +183,172+31.3% | Added |
| BNP Paribas Arbitrage, SA | 833,747 | $24.1M | 0.01% | +138,543+19.9% | Added |
| Wells Fargo & Company | 841,158 | $24.3M | 0.00% | −39,638−4.5% | Reduced |
| Royal Bank of Canada | 887,837 | $25.6M | 0.00% | +43,393+5.1% | Added |
| Value Holdings Management Co. LLC | 907,325 | $26.2M | 4.38% | 00.0% | Unchanged |
| Pacer Advisors, Inc. | 910,227 | $26.3M | 0.07% | +838,184+1,163.4% | Added |