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, Q3 2025
Institutional positions in Tetra Tech Inc as of Sep 30, 2025. 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
- 597
- +14 vs. Q2 2025
- Shares held
- 246.3M
- −56.3K (0.0%) vs. Q2 2025
- Total value
- $8.22B
- −$607.6M (−6.9%) vs. Q2 2025
- New holders
- 74
- 231 more added
- Sold out
- 60
- 202 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rheos Capital Works Inc. | 0 | $0 | 0.00% | −269,000−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −169,026−100.0% | Sold out |
| Lombard Odier Asset Management (Europe) Ltd | 0 | $0 | 0.00% | −145,323−100.0% | Sold out |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −110,687−100.0% | Sold out |
| Waratah Capital Advisors Ltd. | 0 | $0 | 0.00% | −107,734−100.0% | Sold out |
| UniSuper Management Pty Ltd | 0 | $0 | 0.00% | −87,232−100.0% | Sold out |
| Andra AP-fonden | 0 | $0 | 0.00% | −72,408−100.0% | Sold out |
| Argent Capital Management LLC | 0 | $0 | 0.00% | −62,521−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −39,240−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −37,145−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −33,100−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −32,836−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −31,015−100.0% | Sold out |
| Nicola Wealth Management Ltd. | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Martingale Asset Management L P | 0 | $0 | 0.00% | −28,320−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −25,279−100.0% | Sold out |
| 111 Capital | 0 | $0 | 0.00% | −18,106−100.0% | Sold out |
| Alamea Verwaltungs GmbH | 0 | $0 | 0.00% | −17,765−100.0% | Sold out |
| New England Research & Management, Inc. | 0 | $0 | 0.00% | −14,525−100.0% | Sold out |
| Clear Creek Financial Management, LLC | 0 | $0 | 0.00% | −12,609−100.0% | Sold out |
| Maridea Wealth Management LLC | 0 | $0 | 0.00% | −12,556−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −11,095−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −10,775−100.0% | Sold out |
| Lindenwold Advisors | 0 | $0 | 0.00% | −10,302−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −7,133−100.0% | Sold out |
| Whalen Wealth Management Inc. | 0 | $0 | 0.00% | −7,001−100.0% | Sold out |
| Savant Capital, LLC | 0 | $0 | 0.00% | −6,276−100.0% | Sold out |
| Applied Finance Capital Management, LLC | 0 | $0 | 0.00% | −6,273−100.0% | Sold out |
| Pitcairn Co | 0 | $0 | 0.00% | −6,150−100.0% | Sold out |
| Buckingham Strategic Partners | 0 | $0 | 0.00% | −6,141−100.0% | Sold out |
| Focus Financial Network, Inc. | 0 | $0 | 0.00% | −5,950−100.0% | Sold out |
| Stephens Inc | 0 | $0 | 0.00% | −5,853−100.0% | Sold out |
| Wisconsin Capital Management LLC | 0 | $0 | 0.00% | −5,825−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −4,094−100.0% | Sold out |
| BI Asset Management Fondsmaeglerselskab A/S | 0 | $0 | 0.00% | −3,792−100.0% | Sold out |
| GeoWealth Management, LLC | 0 | $0 | 0.00% | −3,390−100.0% | Sold out |
| Bokf, NA | 0 | $0 | 0.00% | −2,500−100.0% | Sold out |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 0 | $0 | 0.00% | −1,880−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −1,878−100.0% | Sold out |
| Atticus Wealth Management, LLC | 0 | $0 | 0.00% | −1,680−100.0% | Sold out |
| Geneos Wealth Management Inc. | 0 | $0 | 0.00% | −1,433−100.0% | Sold out |
| Central Pacific Bank - Trust Division | 0 | $0 | 0.00% | −880−100.0% | Sold out |
| Clark Wealth Partners | 0 | $0 | 0.00% | −450−100.0% | Sold out |
| Cetera Trust Company, N.A | 0 | $0 | 0.00% | −250−100.0% | Sold out |
| Riggs Asset Managment Co. Inc. | 0 | $0 | 0.00% | −225−100.0% | Sold out |
| Colonial Trust Advisors | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| PFS Partners, LLC | 0 | $0 | 0.00% | −182−100.0% | Sold out |
| Total Investment Management Inc | 0 | $0 | 0.00% | −117−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −92−100.0% | Sold out |
| Whipplewood Advisors, LLC | 0 | $0 | 0.00% | −90−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Beacon Capital Management, LLC | 0 | $0 | 0.00% | −70−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −49−100.0% | Sold out |
| Smallwood Wealth Investment Management, LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| WealthTrak Capital Management LLC | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| LGT Financial Advisors LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Kozak & Associates, Inc. | 0 | $0 | 0.00% | 0 | Sold out |
| Norges Bank | – | – | – | – | Not filed |
| AlpenGlobal Capital LLC | – | – | – | – | Not filed |
| Avantax Advisory Services, Inc. | – | – | – | – | Not filed |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |
| Vega Investment Solutions | – | – | – | – | Not filed |
| Parkworth Wealth Management, Inc. | – | – | – | – | Not filed |
| Capital A Wealth Management, LLC | – | – | – | – | Not filed |