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 |
|---|---|---|---|---|---|
| Versant Capital Management, Inc | 10,570 | $318.4K | 0.03% | +1,477+16.2% | Added |
| ELCO Management Co., LLC | 10,593 | $319.1K | 0.15% | −3,104−22.7% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 10,597 | $319.2K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 10,741 | $324.0K | 0.00% | −19,415−64.4% | Reduced |
| Trust Point Inc. | 10,961 | $330.1K | 0.03% | −1,076−8.9% | Reduced |
| Pinebridge Investments LLC | 11,006 | $331.5K | 0.00% | +11,006 | New |
| MML Investors Services, LLC | 11,035 | $332.4K | 0.00% | −8,727−44.2% | Reduced |
| Argent Trust Co | 11,051 | $332.9K | 0.01% | 00.0% | Unchanged |
| National Bank of Canada | 11,144 | $335.6K | 0.00% | −20−0.2% | Reduced |
| North Star Asset Management Inc | 11,500 | $346.4K | 0.02% | 00.0% | Unchanged |
| Kera Capital Partners, Inc. | 11,532 | $347.3K | 0.04% | +1,100+10.5% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 11,610 | $349.7K | 0.00% | +8,234+243.9% | Added |
| Mariner, LLC | 11,640 | $350.7K | 0.00% | −86,566−88.1% | Reduced |
| Nomura Holdings Inc | 11,647 | $350.8K | 0.00% | +1,462+14.4% | Added |
| Define Financial, LLC | 11,737 | $353.5K | 0.19% | +22+0.2% | Added |
| Ausdal Financial Partners, Inc. | 11,910 | $358.7K | 0.02% | +11,910 | New |
| Groupe la Francaise | 12,000 | $360.3K | 0.01% | 00.0% | Unchanged |
| TCG Advisory Services, LLC | 12,068 | $363.5K | 0.01% | +3,509+41.0% | Added |
| Baker Avenue Asset Management, LP | 12,165 | $366.4K | 0.01% | −3,395−21.8% | Reduced |
| Laird Norton Trust Company, LLC | 12,208 | $367.7K | 0.01% | −2,606−17.6% | Reduced |
| Fred Alger Management, LLC | 12,237 | $368.6K | 0.00% | 00.0% | Unchanged |
| RWC Asset Management LLP | 12,253 | $369.1K | 0.02% | 00.0% | Unchanged |
| J.W. Cole Advisors, Inc. | 12,270 | $369.6K | 0.01% | −600−4.7% | Reduced |
| Rathbone Brothers plc | 12,349 | $372.0K | 0.00% | −232−1.8% | Reduced |
| Maryland State Retirement & Pension System | 12,454 | $375.1K | 0.01% | 00.0% | Unchanged |
| Campbell & CO Investment Adviser LLC | 12,640 | $380.7K | 0.02% | −68,315−84.4% | Reduced |
| Optas, LLC | 12,803 | $385.6K | 0.06% | +330+2.6% | Added |
| We Are One Seven, LLC | 12,866 | $387.5K | 0.01% | +1,976+18.1% | Added |
| CWM Advisors, LLC | 12,971 | $390.7K | 0.02% | +12,699+4,668.8% | Added |
| DnB Asset Management AS | 12,987 | $391.2K | 0.00% | +12,987 | New |
| Steward Partners Investment Advisory, LLC | 13,047 | $393.0K | 0.00% | +2,524+24.0% | Added |
| Integrated Wealth Concepts LLC | 13,329 | $401.5K | 0.00% | +6,090+84.1% | Added |
| Clear Creek Financial Management, LLC | 13,409 | $403.9K | 0.03% | +1,819+15.7% | Added |
| Ieq Capital, LLC | 13,566 | $408.6K | 0.00% | −203,364−93.7% | Reduced |
| Virtu Financial LLC | 13,658 | $411.0K | 0.02% | +13,658 | New |
| Utah Retirement Systems | 13,800 | $415.7K | 0.00% | −316−2.2% | Reduced |
| SWP Financial LLC | 13,835 | $416.7K | 0.21% | −90−0.6% | Reduced |
| Ensign Peak Advisors, Inc | 13,845 | $417.0K | 0.00% | 00.0% | Unchanged |
| Mirabella Financial Services LLP | 13,854 | $417.3K | 0.04% | +13,854 | New |
| AdvisorShares Investments LLC | 13,856 | $417.3K | 0.08% | 00.0% | Unchanged |
| Elo Mutual Pension Insurance Co | 13,971 | $420.8K | 0.01% | −33,155−70.4% | Reduced |
| Northwestern Mutual Wealth Management Co | 14,050 | $423.2K | 0.00% | +245+1.8% | Added |
| Ballentine Partners, LLC | 14,435 | $434.8K | 0.01% | −4,394−23.3% | Reduced |
| Fifth Third Wealth Advisors LLC | 14,448 | $435.2K | 0.01% | +5,824+67.5% | Added |
| Impact Partnership Wealth, LLC | 14,454 | $435.4K | 0.05% | +14,454 | New |
| DRW Securities, LLC | 14,747 | $444.2K | 0.02% | +14,747 | New |
| Tocqueville Asset Management L.P. | 15,025 | $452.6K | 0.01% | 00.0% | Unchanged |
| Ledyard National Bank | 15,068 | $453.8K | 0.04% | 00.0% | Unchanged |
| Compass Wealth Management LLC | 15,125 | $455.6K | 0.11% | 00.0% | Unchanged |
| New Hampshire Trust | 15,179 | $457.2K | 0.09% | −586−3.7% | Reduced |
| Midwest Trust Co | 15,179 | $457.2K | 0.01% | −586−3.7% | Reduced |
| Inceptionr LLC | 15,336 | $461.9K | 0.11% | +5,905+62.6% | Added |
| Triglav Skladi, D.O.O. | 15,364 | $462.8K | 0.03% | −16,726−52.1% | Reduced |
| Diversified Trust Co | 15,563 | $468.8K | 0.01% | −2,432−13.5% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 15,845 | $474.5K | 0.00% | −2,849−15.2% | Reduced |
| Abacus Wealth Partners, LLC | 15,900 | $478.9K | 0.04% | +2,967+22.9% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 15,928 | $479.7K | 0.01% | +6,574+70.3% | Added |
| Bowen Hanes & Co Inc | 15,975 | $481.2K | 0.01% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 16,255 | $489.6K | 0.09% | +16,255 | New |
| Nwam LLC | 16,535 | $498.0K | 0.03% | +25+0.2% | Added |
| First Business Financial Services, Inc. | 16,820 | $506.6K | 0.05% | 00.0% | Unchanged |
| Lighthouse Investment Partners, LLC | 16,994 | $511.9K | 0.02% | +16,994 | New |
| AIA Group Ltd | 17,141 | $516.3K | 0.01% | −91,022−84.2% | Reduced |
| Patten Group, Inc. | 17,654 | $531.8K | 0.09% | +1,657+10.4% | Added |
| Great Lakes Advisors, LLC | 17,773 | $535.3K | 0.00% | 00.0% | Unchanged |
| First Pacific Financial | 18,018 | $542.7K | 0.07% | +267+1.5% | Added |
| American Century Companies Inc | 18,152 | $546.7K | 0.00% | +855+4.9% | Added |
| Dover Advisors, LLC | 18,180 | $547.6K | 0.23% | +4,580+33.7% | Added |
| Dynamic Advisor Solutions LLC | 18,825 | $567.0K | 0.02% | +3,361+21.7% | Added |
| Glenmede Trust Co NA | 19,088 | $574.9K | 0.00% | +12,054+171.4% | Added |
| US Bancorp | 19,190 | $578.0K | 0.00% | −1,446−7.0% | Reduced |
| Securian Asset Management, Inc | 19,224 | $579.0K | 0.02% | +173+0.9% | Added |
| Chicago Partners Investment Group LLC | 18,411 | $579.4K | 0.01% | −1,095−5.6% | Reduced |
| Coldstream Capital Management Inc | 19,552 | $588.9K | 0.01% | −5,617−22.3% | Reduced |
| Commonwealth Equity Services, LLC | 19,681 | $592.8K | 0.00% | −805−3.9% | Reduced |
| Cullen Capital Management LLC | 19,837 | $597.5K | 0.01% | +5,404+37.4% | Added |
| Advisor Group Holdings, Inc. | 19,944 | $600.8K | 0.00% | +7,419+59.2% | Added |
| Graham Capital Management, L.P. | 20,091 | $605.1K | 0.02% | +9,152+83.7% | Added |
| Qtron Investments LLC | 20,319 | $612.0K | 0.08% | +20,319 | New |
| State of Wyoming | 20,542 | $618.7K | 0.07% | +2,085+11.3% | Added |
| Arkadios Wealth Advisors | 20,603 | $620.6K | 0.01% | −623−2.9% | Reduced |
| Evexia Wealth LLC | 20,115 | $624.4K | 0.17% | +618+3.2% | Added |
| CWM, LLC | 20,968 | $631.6K | 0.00% | −29,690−58.6% | Reduced |
| First National Advisers, LLC | 21,334 | $642.6K | 0.09% | +659+3.2% | Added |
| First Wilshire Securities Management Inc | 21,500 | $647.6K | 0.15% | 00.0% | Unchanged |
| Natural Investments, LLC | 21,591 | $650.0K | 0.16% | +21,591 | New |
| Two Sigma Securities, LLC | 21,589 | $650.3K | 0.08% | +21,589 | New |
| Evergreen Capital Management LLC | 22,248 | $670.1K | 0.01% | +5,444+32.4% | Added |
| M&T Bank Corp | 22,418 | $675.1K | 0.00% | −993−4.2% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 22,477 | $677.0K | 0.02% | +746+3.4% | Added |
| Numerai GP LLC | 23,123 | $696.5K | 0.07% | −29,807−56.3% | Reduced |
| Harbour Investments, Inc. | 23,482 | $707.3K | 0.01% | +70.0% | Added |
| The PNC Financial Services Group, Inc. | 23,652 | $712.4K | 0.00% | +153+0.7% | Added |
| IMC-Chicago, LLC | 23,740 | $715.0K | 0.01% | +23,740 | New |
| Perigon Wealth Management, LLC | 23,838 | $718.0K | 0.01% | −5,562−18.9% | Reduced |
| Baird Financial Group, Inc. | 23,909 | $720.1K | 0.00% | +3,810+19.0% | Added |
| Bailard, Inc. | 24,200 | $728.9K | 0.02% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 24,206 | $729.1K | 0.01% | +16,787+226.3% | Added |
| Axq Capital, LP | 24,442 | $736.2K | 0.09% | +7,348+43.0% | Added |
| Quadrant Capital Group LLC | 24,611 | $741.3K | 0.02% | −1,180−4.6% | Reduced |