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 |
|---|---|---|---|---|---|
| Merit Financial Group, LLC | 9,783 | $294.7K | 0.00% | −8,394−46.2% | Reduced |
| Dakota Wealth Management | 9,665 | $291.1K | 0.01% | −531−5.2% | Reduced |
| AE Wealth Management LLC | 9,599 | $289.1K | 0.00% | +1,333+16.1% | Added |
| Brevan Howard Capital Management LP | 9,504 | $286.3K | 0.00% | −4,420−31.7% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 9,500 | $286.1K | 0.00% | 00.0% | Unchanged |
| AlphaGrep UK Ltd | 9,186 | $276.7K | 0.08% | −9,616−51.1% | Reduced |
| Aaron Wealth Advisors | 9,181 | $276.5K | 0.02% | −12,989−58.6% | Reduced |
| Camden Capital, LLC | 9,119 | $274.7K | 0.02% | +2,618+40.3% | Added |
| Blueshift Asset Management, LLC | 9,028 | $271.9K | 0.08% | +9,028 | New |
| Diametric Capital, LP | 9,025 | $271.8K | 0.07% | −9,045−50.1% | Reduced |
| Prelude Capital Management, LLC | 8,951 | $269.6K | 0.02% | −8,732−49.4% | Reduced |
| Sanctuary Advisors, LLC | 8,811 | $265.4K | 0.00% | −7,817−47.0% | Reduced |
| HB Wealth Management, LLC | 8,773 | $264.2K | 0.00% | −3,614−29.2% | Reduced |
| Shelton Capital Management | 8,767 | $264.1K | 0.01% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 8,716 | $262.5K | 0.00% | +1,318+17.8% | Added |
| CIBC Asset Management Inc | 8,488 | $255.7K | 0.00% | 00.0% | Unchanged |
| Umb Bank N A | 8,329 | $250.9K | 0.00% | +594+7.7% | Added |
| Everence Capital Management Inc | 8,060 | $243.0K | 0.01% | −1,320−14.1% | Reduced |
| KBC Group NV | 7,936 | $239.0K | 0.00% | +1,120+16.4% | Added |
| Sequoia Financial Advisors, LLC | 7,723 | $232.6K | 0.00% | −2,943−27.6% | Reduced |
| North Dakota State Investment Board | 7,675 | $231.2K | 0.01% | −1,610−17.3% | Reduced |
| Kestra Advisory Services, LLC | 7,597 | $228.8K | 0.00% | +202+2.7% | Added |
| NewEdge Wealth, LLC | 7,556 | $227.6K | 0.00% | −2,338−23.6% | Reduced |
| Crestwood Advisors Group LLC | 7,548 | $227.3K | 0.00% | +1,354+21.9% | Added |
| Marex Group plc | 7,526 | $226.7K | 0.00% | +7,526 | New |
| Philadelphia Trust Co | 7,500 | $226.0K | 0.02% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 7,444 | $224.2K | 0.00% | −5,551−42.7% | Reduced |
| New England Professional Planning Group Inc. | 7,415 | $223.3K | 0.09% | 00.0% | Unchanged |
| Vise Technologies, Inc. | 6,564 | $220.2K | 0.00% | 00.0% | Unchanged |
| Pinnacle Financial Partners, Inc. | 7,305 | $220.0K | 0.00% | 00.0% | Unchanged |
| Fiduciary Trust Co | 7,225 | $217.6K | 0.00% | −250−3.3% | Reduced |
| Vident Advisory, LLC | 7,149 | $215.3K | 0.00% | +7,149 | New |
| Novem Group | 7,106 | $214.0K | 0.02% | −2,239−24.0% | Reduced |
| Keebeck Alpha, LP | 7,062 | $212.7K | 0.65% | +7,062 | New |
| EP Wealth Advisors, LLC | 6,982 | $210.3K | 0.00% | −1,569−18.3% | Reduced |
| Skopos Labs, Inc. | 6,901 | $207.9K | 0.01% | +804+13.2% | Added |
| RSM US Wealth Management LLC | 6,896 | $207.7K | 0.00% | +162+2.4% | Added |
| Modern Wealth Management, LLC | 6,547 | $201.2K | 0.00% | −2,595−28.4% | Reduced |
| GAMMA Investing LLC | 6,584 | $198.3K | 0.01% | −1,520−18.8% | Reduced |
| Farther Finance Advisors, LLC | 6,361 | $195.5K | 0.00% | −1,391−17.9% | Reduced |
| STRS Ohio | 6,215 | $187.2K | 0.00% | −74−1.2% | Reduced |
| TD Private Client Wealth LLC | 6,136 | $184.8K | 0.00% | +4,873+385.8% | Added |
| Group One Trading, L.P. | 5,709 | $172.0K | 0.01% | +4,553+393.9% | Added |
| Ronald Blue Trust, Inc. | 5,706 | $171.9K | 0.00% | +4,104+256.2% | Added |
| IFP Advisors, Inc | 4,912 | $147.9K | 0.00% | −3,446−41.2% | Reduced |
| Parallel Advisors, LLC | 4,799 | $144.6K | 0.00% | +359+8.1% | Added |
| Hantz Financial Services, Inc. | 4,792 | $144.0K | 0.00% | −313−6.1% | Reduced |
| Vestcor Inc | 4,699 | $142.0K | 0.00% | +4,699 | New |
| Assetmark, Inc | 4,697 | $141.5K | 0.00% | +733+18.5% | Added |
| Signaturefd, LLC | 4,689 | $141.2K | 0.00% | −1,487−24.1% | Reduced |
| Quarry LP | 4,182 | $126.0K | 0.03% | +4,182 | New |
| Brown Brothers Harriman & Co | 3,877 | $116.8K | 0.00% | +104+2.8% | Added |
| Compagnie Lombard Odier SCmA | 3,800 | $114.5K | 0.00% | 00.0% | Unchanged |
| Horizon Investments, LLC | 3,724 | $112.2K | 0.00% | −51,967−93.3% | Reduced |
| Eurizon Capital SGR S.p.A. | 3,729 | $111.5K | 0.00% | +574+18.2% | Added |
| Albion Financial Group | 3,625 | $109.2K | 0.01% | 00.0% | Unchanged |
| Allworth Financial LP | 3,597 | $108.3K | 0.00% | −1,011−21.9% | Reduced |
| SRS Capital Advisors, Inc. | 3,453 | $103.8K | 0.00% | −901−20.7% | Reduced |
| Jones Financial Companies LLLP | 3,379 | $100.6K | 0.00% | +354+11.7% | Added |
| Palladiem, LLC | 2,950 | $91.0K | 0.09% | 00.0% | Unchanged |
| Leonteq Securities AG | 2,671 | $80.5K | 0.00% | −1,461−35.4% | Reduced |
| Monetary Management Group Inc | 2,500 | $75.3K | 0.02% | −2,000−44.4% | Reduced |
| Globeflex Capital L P | 2,500 | $75.3K | 0.01% | 00.0% | Unchanged |
| CVA Family Office, LLC | 2,472 | $74.5K | 0.01% | +237+10.6% | Added |
| Larson Financial Group LLC | 2,087 | $62.9K | 0.00% | +396+23.4% | Added |
| Clearstead Advisors, LLC | 2,075 | $62.5K | 0.00% | −1,221−37.0% | Reduced |
| Whittier Trust Co | 1,915 | $59.7K | 0.00% | −31,000−94.2% | Reduced |
| Harvest Fund Management Co., Ltd | 1,932 | $58.0K | 0.00% | +1,338+225.3% | Added |
| Massmutual Trust Co FSB | 1,925 | $58.0K | 0.00% | −328−14.6% | Reduced |
| Cullen/Frost Bankers, Inc. | 1,877 | $56.5K | 0.00% | −1,019−35.2% | Reduced |
| Central Trust Co | 1,875 | $56.5K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 1,802 | $55.4K | 0.00% | −540−23.1% | Reduced |
| Bryn Mawr Trust Co | 1,631 | $49.1K | 0.00% | 00.0% | Unchanged |
| Golden State Wealth Management, LLC | 1,529 | $46.1K | 0.01% | +1,500+5,172.4% | Added |
| EverSource Wealth Advisors, LLC | 1,408 | $42.4K | 0.00% | −1,539−52.2% | Reduced |
| Wolverine Asset Management LLC | 1,306 | $39.3K | 0.00% | +1,306 | New |
| Capital Advisors, Ltd. LLC | 1,290 | $39.0K | 0.00% | −1,982−60.6% | Reduced |
| MAI Capital Management | 1,272 | $38.3K | 0.00% | +180+16.5% | Added |
| HM Payson & Co | 1,250 | $37.6K | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 1,184 | $35.7K | 0.00% | −8−0.7% | Reduced |
| Evelyn Partners Investment Management Services Ltd | 1,155 | $34.8K | 0.00% | +1,155 | New |
| Spire Wealth Management | 1,152 | $34.7K | 0.00% | −318−21.6% | Reduced |
| OP Asset Management Ltd | 1,134 | $34.2K | 0.00% | 00.0% | Unchanged |
| Asset Planning,Inc | 1,000 | $30.1K | 0.02% | 00.0% | Unchanged |
| CX Institutional | 994 | $30.0K | 0.00% | +658+195.8% | Added |
| Strategic Wealth Partners, Ltd. | 947 | $28.5K | 0.00% | −100−9.6% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 900 | $27.2K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 875 | $26.4K | 0.01% | −5−0.6% | Reduced |
| Manchester Capital Management LLC | 796 | $24.0K | 0.00% | +186+30.5% | Added |
| Financial Consulate, Inc | 775 | $23.3K | 0.00% | 00.0% | Unchanged |
| BFSG, LLC | 750 | $22.6K | 0.00% | 00.0% | Unchanged |
| Sound Income Strategies, LLC | 730 | $22.4K | 0.00% | +1+0.1% | Added |
| Wilkerson Advisory Group LLC | 744 | $22.4K | 0.01% | −5,954−88.9% | Reduced |
| Essential Investment Partners LLC | 660 | $19.9K | 0.02% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 650 | $19.6K | 0.00% | +230+54.8% | Added |
| Twin Tree Management, LP | 645 | $19.4K | 0.00% | +645 | New |
| Trust Co | 626 | $18.9K | 0.00% | +1+0.2% | Added |
| Root Financial Partners, LLC | 600 | $18.1K | 0.00% | −16−2.6% | Reduced |
| Plante Moran Financial Advisors, LLC | 595 | $17.9K | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 585 | $17.6K | 0.00% | 00.0% | Unchanged |