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 |
|---|---|---|---|---|---|
| Wilkerson Advisory Group LLC | 744 | $22.4K | 0.01% | −5,954−88.9% | Reduced |
| Sound Income Strategies, LLC | 730 | $22.4K | 0.00% | +1+0.1% | Added |
| BFSG, LLC | 750 | $22.6K | 0.00% | 00.0% | Unchanged |
| Financial Consulate, Inc | 775 | $23.3K | 0.00% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 796 | $24.0K | 0.00% | +186+30.5% | Added |
| True Wealth Design, LLC | 875 | $26.4K | 0.01% | −5−0.6% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 900 | $27.2K | 0.00% | 00.0% | Unchanged |
| Strategic Wealth Partners, Ltd. | 947 | $28.5K | 0.00% | −100−9.6% | Reduced |
| CX Institutional | 994 | $30.0K | 0.00% | +658+195.8% | Added |
| Asset Planning,Inc | 1,000 | $30.1K | 0.02% | 00.0% | Unchanged |
| OP Asset Management Ltd | 1,134 | $34.2K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 1,152 | $34.7K | 0.00% | −318−21.6% | Reduced |
| Evelyn Partners Investment Management Services Ltd | 1,155 | $34.8K | 0.00% | +1,155 | New |
| SJS Investment Consulting Inc. | 1,184 | $35.7K | 0.00% | −8−0.7% | Reduced |
| HM Payson & Co | 1,250 | $37.6K | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 1,272 | $38.3K | 0.00% | +180+16.5% | Added |
| Capital Advisors, Ltd. LLC | 1,290 | $39.0K | 0.00% | −1,982−60.6% | Reduced |
| Wolverine Asset Management LLC | 1,306 | $39.3K | 0.00% | +1,306 | New |
| EverSource Wealth Advisors, LLC | 1,408 | $42.4K | 0.00% | −1,539−52.2% | Reduced |
| Golden State Wealth Management, LLC | 1,529 | $46.1K | 0.01% | +1,500+5,172.4% | Added |
| Bryn Mawr Trust Co | 1,631 | $49.1K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 1,802 | $55.4K | 0.00% | −540−23.1% | Reduced |
| Central Trust Co | 1,875 | $56.5K | 0.00% | 00.0% | Unchanged |
| Cullen/Frost Bankers, Inc. | 1,877 | $56.5K | 0.00% | −1,019−35.2% | Reduced |
| Massmutual Trust Co FSB | 1,925 | $58.0K | 0.00% | −328−14.6% | Reduced |
| Harvest Fund Management Co., Ltd | 1,932 | $58.0K | 0.00% | +1,338+225.3% | Added |
| Whittier Trust Co | 1,915 | $59.7K | 0.00% | −31,000−94.2% | Reduced |
| Clearstead Advisors, LLC | 2,075 | $62.5K | 0.00% | −1,221−37.0% | Reduced |
| Larson Financial Group LLC | 2,087 | $62.9K | 0.00% | +396+23.4% | Added |
| CVA Family Office, LLC | 2,472 | $74.5K | 0.01% | +237+10.6% | Added |
| 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 |
| Leonteq Securities AG | 2,671 | $80.5K | 0.00% | −1,461−35.4% | Reduced |
| Palladiem, LLC | 2,950 | $91.0K | 0.09% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 3,379 | $100.6K | 0.00% | +354+11.7% | Added |
| SRS Capital Advisors, Inc. | 3,453 | $103.8K | 0.00% | −901−20.7% | Reduced |
| Allworth Financial LP | 3,597 | $108.3K | 0.00% | −1,011−21.9% | Reduced |
| Albion Financial Group | 3,625 | $109.2K | 0.01% | 00.0% | Unchanged |
| Eurizon Capital SGR S.p.A. | 3,729 | $111.5K | 0.00% | +574+18.2% | Added |
| Horizon Investments, LLC | 3,724 | $112.2K | 0.00% | −51,967−93.3% | Reduced |
| Compagnie Lombard Odier SCmA | 3,800 | $114.5K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 3,877 | $116.8K | 0.00% | +104+2.8% | Added |
| Quarry LP | 4,182 | $126.0K | 0.03% | +4,182 | New |
| Signaturefd, LLC | 4,689 | $141.2K | 0.00% | −1,487−24.1% | Reduced |
| Assetmark, Inc | 4,697 | $141.5K | 0.00% | +733+18.5% | Added |
| Vestcor Inc | 4,699 | $142.0K | 0.00% | +4,699 | New |
| Hantz Financial Services, Inc. | 4,792 | $144.0K | 0.00% | −313−6.1% | Reduced |
| Parallel Advisors, LLC | 4,799 | $144.6K | 0.00% | +359+8.1% | Added |
| IFP Advisors, Inc | 4,912 | $147.9K | 0.00% | −3,446−41.2% | Reduced |
| Ronald Blue Trust, Inc. | 5,706 | $171.9K | 0.00% | +4,104+256.2% | Added |
| Group One Trading, L.P. | 5,709 | $172.0K | 0.01% | +4,553+393.9% | Added |
| TD Private Client Wealth LLC | 6,136 | $184.8K | 0.00% | +4,873+385.8% | Added |
| STRS Ohio | 6,215 | $187.2K | 0.00% | −74−1.2% | Reduced |
| Farther Finance Advisors, LLC | 6,361 | $195.5K | 0.00% | −1,391−17.9% | Reduced |
| GAMMA Investing LLC | 6,584 | $198.3K | 0.01% | −1,520−18.8% | Reduced |
| Modern Wealth Management, LLC | 6,547 | $201.2K | 0.00% | −2,595−28.4% | Reduced |
| RSM US Wealth Management LLC | 6,896 | $207.7K | 0.00% | +162+2.4% | Added |
| Skopos Labs, Inc. | 6,901 | $207.9K | 0.01% | +804+13.2% | Added |
| EP Wealth Advisors, LLC | 6,982 | $210.3K | 0.00% | −1,569−18.3% | Reduced |
| Keebeck Alpha, LP | 7,062 | $212.7K | 0.65% | +7,062 | New |
| Novem Group | 7,106 | $214.0K | 0.02% | −2,239−24.0% | Reduced |
| Vident Advisory, LLC | 7,149 | $215.3K | 0.00% | +7,149 | New |
| Fiduciary Trust Co | 7,225 | $217.6K | 0.00% | −250−3.3% | Reduced |
| Pinnacle Financial Partners, Inc. | 7,305 | $220.0K | 0.00% | 00.0% | Unchanged |
| Vise Technologies, Inc. | 6,564 | $220.2K | 0.00% | 00.0% | Unchanged |
| New England Professional Planning Group Inc. | 7,415 | $223.3K | 0.09% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 7,444 | $224.2K | 0.00% | −5,551−42.7% | Reduced |
| Philadelphia Trust Co | 7,500 | $226.0K | 0.02% | 00.0% | Unchanged |
| Marex Group plc | 7,526 | $226.7K | 0.00% | +7,526 | New |
| Crestwood Advisors Group LLC | 7,548 | $227.3K | 0.00% | +1,354+21.9% | Added |
| NewEdge Wealth, LLC | 7,556 | $227.6K | 0.00% | −2,338−23.6% | Reduced |
| Kestra Advisory Services, LLC | 7,597 | $228.8K | 0.00% | +202+2.7% | Added |
| North Dakota State Investment Board | 7,675 | $231.2K | 0.01% | −1,610−17.3% | Reduced |
| Sequoia Financial Advisors, LLC | 7,723 | $232.6K | 0.00% | −2,943−27.6% | Reduced |
| KBC Group NV | 7,936 | $239.0K | 0.00% | +1,120+16.4% | Added |
| Everence Capital Management Inc | 8,060 | $243.0K | 0.01% | −1,320−14.1% | Reduced |
| Umb Bank N A | 8,329 | $250.9K | 0.00% | +594+7.7% | Added |
| CIBC Asset Management Inc | 8,488 | $255.7K | 0.00% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 8,716 | $262.5K | 0.00% | +1,318+17.8% | Added |
| Shelton Capital Management | 8,767 | $264.1K | 0.01% | 00.0% | Unchanged |
| HB Wealth Management, LLC | 8,773 | $264.2K | 0.00% | −3,614−29.2% | Reduced |
| Sanctuary Advisors, LLC | 8,811 | $265.4K | 0.00% | −7,817−47.0% | Reduced |
| Prelude Capital Management, LLC | 8,951 | $269.6K | 0.02% | −8,732−49.4% | Reduced |
| Diametric Capital, LP | 9,025 | $271.8K | 0.07% | −9,045−50.1% | Reduced |
| Blueshift Asset Management, LLC | 9,028 | $271.9K | 0.08% | +9,028 | New |
| Camden Capital, LLC | 9,119 | $274.7K | 0.02% | +2,618+40.3% | Added |
| Aaron Wealth Advisors | 9,181 | $276.5K | 0.02% | −12,989−58.6% | Reduced |
| AlphaGrep UK Ltd | 9,186 | $276.7K | 0.08% | −9,616−51.1% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 9,500 | $286.1K | 0.00% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 9,504 | $286.3K | 0.00% | −4,420−31.7% | Reduced |
| AE Wealth Management LLC | 9,599 | $289.1K | 0.00% | +1,333+16.1% | Added |
| Dakota Wealth Management | 9,665 | $291.1K | 0.01% | −531−5.2% | Reduced |
| Merit Financial Group, LLC | 9,783 | $294.7K | 0.00% | −8,394−46.2% | Reduced |
| Tower Research Capital LLC (TRC) | 9,801 | $295.2K | 0.01% | −4,569−31.8% | Reduced |
| VARCOV Co. | 9,938 | $299.3K | 0.11% | +9,938 | New |
| Simplex Trading, LLC | 10,061 | $303.0K | 0.01% | +10,061 | New |
| Oxford Asset Management LLP | 10,161 | $306.0K | 0.12% | +10,161 | New |
| Huntington National Bank | 10,311 | $310.6K | 0.00% | −50.0% | Reduced |
| Malaga Cove Capital, LLC | 10,441 | $314.5K | 0.11% | +1,316+14.4% | Added |
| ProShare Advisors LLC | 10,461 | $315.1K | 0.00% | −22−0.2% | Reduced |