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 |
|---|---|---|---|---|---|
| The PNC Financial Services Group, Inc. | 23,652 | $712.4K | 0.00% | +153+0.7% | Added |
| Harbour Investments, Inc. | 23,482 | $707.3K | 0.01% | +70.0% | Added |
| Numerai GP LLC | 23,123 | $696.5K | 0.07% | −29,807−56.3% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 22,477 | $677.0K | 0.02% | +746+3.4% | Added |
| M&T Bank Corp | 22,418 | $675.1K | 0.00% | −993−4.2% | Reduced |
| Evergreen Capital Management LLC | 22,248 | $670.1K | 0.01% | +5,444+32.4% | Added |
| Two Sigma Securities, LLC | 21,589 | $650.3K | 0.08% | +21,589 | New |
| Natural Investments, LLC | 21,591 | $650.0K | 0.16% | +21,591 | New |
| First Wilshire Securities Management Inc | 21,500 | $647.6K | 0.15% | 00.0% | Unchanged |
| First National Advisers, LLC | 21,334 | $642.6K | 0.09% | +659+3.2% | Added |
| CWM, LLC | 20,968 | $631.6K | 0.00% | −29,690−58.6% | Reduced |
| Evexia Wealth LLC | 20,115 | $624.4K | 0.17% | +618+3.2% | Added |
| Arkadios Wealth Advisors | 20,603 | $620.6K | 0.01% | −623−2.9% | Reduced |
| State of Wyoming | 20,542 | $618.7K | 0.07% | +2,085+11.3% | Added |
| Qtron Investments LLC | 20,319 | $612.0K | 0.08% | +20,319 | New |
| Graham Capital Management, L.P. | 20,091 | $605.1K | 0.02% | +9,152+83.7% | Added |
| Advisor Group Holdings, Inc. | 19,944 | $600.8K | 0.00% | +7,419+59.2% | Added |
| Cullen Capital Management LLC | 19,837 | $597.5K | 0.01% | +5,404+37.4% | Added |
| Commonwealth Equity Services, LLC | 19,681 | $592.8K | 0.00% | −805−3.9% | Reduced |
| Coldstream Capital Management Inc | 19,552 | $588.9K | 0.01% | −5,617−22.3% | Reduced |
| Chicago Partners Investment Group LLC | 18,411 | $579.4K | 0.01% | −1,095−5.6% | Reduced |
| Securian Asset Management, Inc | 19,224 | $579.0K | 0.02% | +173+0.9% | Added |
| US Bancorp | 19,190 | $578.0K | 0.00% | −1,446−7.0% | Reduced |
| Glenmede Trust Co NA | 19,088 | $574.9K | 0.00% | +12,054+171.4% | Added |
| Dynamic Advisor Solutions LLC | 18,825 | $567.0K | 0.02% | +3,361+21.7% | Added |
| Dover Advisors, LLC | 18,180 | $547.6K | 0.23% | +4,580+33.7% | Added |
| American Century Companies Inc | 18,152 | $546.7K | 0.00% | +855+4.9% | Added |
| First Pacific Financial | 18,018 | $542.7K | 0.07% | +267+1.5% | Added |
| Great Lakes Advisors, LLC | 17,773 | $535.3K | 0.00% | 00.0% | Unchanged |
| Patten Group, Inc. | 17,654 | $531.8K | 0.09% | +1,657+10.4% | Added |
| AIA Group Ltd | 17,141 | $516.3K | 0.01% | −91,022−84.2% | Reduced |
| Lighthouse Investment Partners, LLC | 16,994 | $511.9K | 0.02% | +16,994 | New |
| First Business Financial Services, Inc. | 16,820 | $506.6K | 0.05% | 00.0% | Unchanged |
| Nwam LLC | 16,535 | $498.0K | 0.03% | +25+0.2% | Added |
| Caitong International Asset Management Co., Ltd | 16,255 | $489.6K | 0.09% | +16,255 | New |
| Bowen Hanes & Co Inc | 15,975 | $481.2K | 0.01% | 00.0% | Unchanged |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 15,928 | $479.7K | 0.01% | +6,574+70.3% | Added |
| Abacus Wealth Partners, LLC | 15,900 | $478.9K | 0.04% | +2,967+22.9% | Added |
| Wiley Bros.-Aintree Capital, LLC | 15,845 | $474.5K | 0.00% | −2,849−15.2% | Reduced |
| Diversified Trust Co | 15,563 | $468.8K | 0.01% | −2,432−13.5% | Reduced |
| Triglav Skladi, D.O.O. | 15,364 | $462.8K | 0.03% | −16,726−52.1% | Reduced |
| Inceptionr LLC | 15,336 | $461.9K | 0.11% | +5,905+62.6% | Added |
| 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 |
| Compass Wealth Management LLC | 15,125 | $455.6K | 0.11% | 00.0% | Unchanged |
| Ledyard National Bank | 15,068 | $453.8K | 0.04% | 00.0% | Unchanged |
| Tocqueville Asset Management L.P. | 15,025 | $452.6K | 0.01% | 00.0% | Unchanged |
| DRW Securities, LLC | 14,747 | $444.2K | 0.02% | +14,747 | New |
| Impact Partnership Wealth, LLC | 14,454 | $435.4K | 0.05% | +14,454 | New |
| Fifth Third Wealth Advisors LLC | 14,448 | $435.2K | 0.01% | +5,824+67.5% | Added |
| Ballentine Partners, LLC | 14,435 | $434.8K | 0.01% | −4,394−23.3% | Reduced |
| Northwestern Mutual Wealth Management Co | 14,050 | $423.2K | 0.00% | +245+1.8% | Added |
| Elo Mutual Pension Insurance Co | 13,971 | $420.8K | 0.01% | −33,155−70.4% | Reduced |
| AdvisorShares Investments LLC | 13,856 | $417.3K | 0.08% | 00.0% | Unchanged |
| Mirabella Financial Services LLP | 13,854 | $417.3K | 0.04% | +13,854 | New |
| Ensign Peak Advisors, Inc | 13,845 | $417.0K | 0.00% | 00.0% | Unchanged |
| SWP Financial LLC | 13,835 | $416.7K | 0.21% | −90−0.6% | Reduced |
| Utah Retirement Systems | 13,800 | $415.7K | 0.00% | −316−2.2% | Reduced |
| Virtu Financial LLC | 13,658 | $411.0K | 0.02% | +13,658 | New |
| Ieq Capital, LLC | 13,566 | $408.6K | 0.00% | −203,364−93.7% | Reduced |
| Clear Creek Financial Management, LLC | 13,409 | $403.9K | 0.03% | +1,819+15.7% | Added |
| Integrated Wealth Concepts LLC | 13,329 | $401.5K | 0.00% | +6,090+84.1% | Added |
| Steward Partners Investment Advisory, LLC | 13,047 | $393.0K | 0.00% | +2,524+24.0% | Added |
| DnB Asset Management AS | 12,987 | $391.2K | 0.00% | +12,987 | New |
| CWM Advisors, LLC | 12,971 | $390.7K | 0.02% | +12,699+4,668.8% | Added |
| We Are One Seven, LLC | 12,866 | $387.5K | 0.01% | +1,976+18.1% | Added |
| Optas, LLC | 12,803 | $385.6K | 0.06% | +330+2.6% | Added |
| Campbell & CO Investment Adviser LLC | 12,640 | $380.7K | 0.02% | −68,315−84.4% | Reduced |
| Maryland State Retirement & Pension System | 12,454 | $375.1K | 0.01% | 00.0% | Unchanged |
| Rathbone Brothers plc | 12,349 | $372.0K | 0.00% | −232−1.8% | Reduced |
| J.W. Cole Advisors, Inc. | 12,270 | $369.6K | 0.01% | −600−4.7% | Reduced |
| RWC Asset Management LLP | 12,253 | $369.1K | 0.02% | 00.0% | Unchanged |
| Fred Alger Management, LLC | 12,237 | $368.6K | 0.00% | 00.0% | Unchanged |
| Laird Norton Trust Company, LLC | 12,208 | $367.7K | 0.01% | −2,606−17.6% | Reduced |
| Baker Avenue Asset Management, LP | 12,165 | $366.4K | 0.01% | −3,395−21.8% | Reduced |
| TCG Advisory Services, LLC | 12,068 | $363.5K | 0.01% | +3,509+41.0% | Added |
| Groupe la Francaise | 12,000 | $360.3K | 0.01% | 00.0% | Unchanged |
| Ausdal Financial Partners, Inc. | 11,910 | $358.7K | 0.02% | +11,910 | New |
| Define Financial, LLC | 11,737 | $353.5K | 0.19% | +22+0.2% | Added |
| Nomura Holdings Inc | 11,647 | $350.8K | 0.00% | +1,462+14.4% | Added |
| Mariner, LLC | 11,640 | $350.7K | 0.00% | −86,566−88.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 11,610 | $349.7K | 0.00% | +8,234+243.9% | Added |
| Kera Capital Partners, Inc. | 11,532 | $347.3K | 0.04% | +1,100+10.5% | Added |
| North Star Asset Management Inc | 11,500 | $346.4K | 0.02% | 00.0% | Unchanged |
| National Bank of Canada | 11,144 | $335.6K | 0.00% | −20−0.2% | Reduced |
| Argent Trust Co | 11,051 | $332.9K | 0.01% | 00.0% | Unchanged |
| MML Investors Services, LLC | 11,035 | $332.4K | 0.00% | −8,727−44.2% | Reduced |
| Pinebridge Investments LLC | 11,006 | $331.5K | 0.00% | +11,006 | New |
| Trust Point Inc. | 10,961 | $330.1K | 0.03% | −1,076−8.9% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 10,741 | $324.0K | 0.00% | −19,415−64.4% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 10,597 | $319.2K | 0.00% | 00.0% | Unchanged |
| ELCO Management Co., LLC | 10,593 | $319.1K | 0.15% | −3,104−22.7% | Reduced |
| Versant Capital Management, Inc | 10,570 | $318.4K | 0.03% | +1,477+16.2% | Added |
| ProShare Advisors LLC | 10,461 | $315.1K | 0.00% | −22−0.2% | Reduced |
| Malaga Cove Capital, LLC | 10,441 | $314.5K | 0.11% | +1,316+14.4% | Added |
| Huntington National Bank | 10,311 | $310.6K | 0.00% | −50.0% | Reduced |
| Oxford Asset Management LLP | 10,161 | $306.0K | 0.12% | +10,161 | New |
| Simplex Trading, LLC | 10,061 | $303.0K | 0.01% | +10,061 | New |
| VARCOV Co. | 9,938 | $299.3K | 0.11% | +9,938 | New |
| Tower Research Capital LLC (TRC) | 9,801 | $295.2K | 0.01% | −4,569−31.8% | Reduced |