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Livermore
Livermore
ZHEN

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, Q4 2025

Institutional positions in Tetra Tech Inc as of Dec 31, 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
611
+26 vs. Q3 2025
Shares held
241.8M
−4.04M (−1.6%) vs. Q3 2025
Total value
$8.10B
−$102.0M (−1.2%) vs. Q3 2025
New holders
96
182 more added
Sold out
70
253 more reduced

12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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.

Institutional holdersQ4 2025: 611 institutions
Q1 2021: 365 institutionsQ2 2021: 366 institutionsQ3 2021: 359 institutionsQ4 2021: 401 institutionsQ1 2022: 404 institutionsQ2 2022: 415 institutionsQ3 2022: 412 institutionsQ4 2022: 470 institutionsQ1 2023: 445 institutionsQ2 2023: 455 institutionsQ3 2023: 471 institutionsQ4 2023: 510 institutionsQ1 2024: 512 institutionsQ2 2024: 600 institutionsQ3 2024: 646 institutionsQ4 2024: 638 institutionsQ1 2025: 568 institutionsQ2 2025: 590 institutionsQ3 2025: 597 institutionsQ4 2025: 611 institutionsQ1 2026: 593 institutionsQ2 2026: 555 institutions
Value heldQ4 2025: $8.10B
Q1 2021: $6.39BQ2 2021: $5.68BQ3 2021: $7.08BQ4 2021: $7.93BQ1 2022: $7.86BQ2 2022: $6.31BQ3 2022: $5.91BQ4 2022: $6.68BQ1 2023: $6.81BQ2 2023: $7.67BQ3 2023: $7.09BQ4 2023: $7.87BQ1 2024: $8.66BQ2 2024: $9.88BQ3 2024: $11.2BQ4 2024: $9.45BQ1 2025: $7.18BQ2 2025: $8.94BQ3 2025: $8.22BQ4 2025: $8.10BQ1 2026: $7.35BQ2 2026: $7.32B
Institutions holding TTEK and their total value by quarter
QuarterHoldersValue
Q2 2026555$7.32B
Q1 2026593$7.35B
Q4 2025611$8.10B
Q3 2025597$8.22B
Q2 2025590$8.94B
Q1 2025568$7.18B
Q4 2024638$9.45B
Q3 2024646$11.2B
Q2 2024600$9.88B
Q1 2024512$8.66B
Q4 2023510$7.87B
Q3 2023471$7.09B
Q2 2023455$7.67B
Q1 2023445$6.81B
Q4 2022470$6.68B
Q3 2022412$5.91B
Q2 2022415$6.31B
Q1 2022404$7.86B
Q4 2021401$7.93B
Q3 2021359$7.08B
Q2 2021366$5.68B
Q1 2021365$6.39B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q3 2025.

Institutions holding TTEK in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Strengthening Families & Communities, LLC0$20.00%0Unchanged
MV Capital Management, Inc.1$340.00%+1New
Raleigh Capital Management Inc.1$450.00%00.0%Unchanged
Optiver Holding B.V.2$670.00%+2New
American Capital Advisory, LLC3$1010.00%−1−25.0%Reduced
IMA Wealth, Inc.5$1670.00%00.0%Unchanged
United Financial Planning Group LLC7$2350.00%+7New
DV Trading LLC9$3020.00%+9New
Bare Financial Services, Inc12$4020.00%00.0%Unchanged
AdvisorNet Financial, Inc12$4020.00%+10+500.0%Added
DecisionPoint Financial, LLC13$4370.00%00.0%Unchanged
HFM Investment Advisors, LLC14$4700.00%+2+16.7%Added
Rakuten Securities, Inc.15$5030.00%−37−71.2%Reduced
Hughes Financial Services, LLC16$5370.00%00.0%Unchanged
UMA Financial Services, Inc.16$5370.00%+16New
Bay Harbor Wealth Management, LLC18$6030.00%+6+50.0%Added
Quaker Wealth Management, LLC18$6040.00%+18New
Investors Portfolio Services LLC18$6140.00%+18New
Golden State Wealth Management, LLC29$9730.00%+29New
Avion Wealth58$1.00K0.00%−14−19.4%Reduced
Cromwell Holdings LLC31$1.04K0.00%00.0%Unchanged
Bogart Wealth, LLC32$1.07K0.00%+16+100.0%Added
DiNuzzo Private Wealth, Inc.33$1.11K0.00%00.0%Unchanged
Rialto Wealth Management, LLC36$1.21K0.00%+4+12.5%Added
Bell Investment Advisors, Inc40$1.34K0.00%−14−25.9%Reduced
Financial Management Professionals, Inc.40$1.34K0.00%00.0%Unchanged
Principia Wealth Advisory, LLC40$1.34K0.00%+21+110.5%Added
Creative Financial Designs Inc41$1.38K0.00%00.0%Unchanged
CoreCap Advisors, LLC45$1.51K0.00%00.0%Unchanged
Transamerica Financial Advisors, Inc.48$1.61K0.00%+14+41.2%Added
Fortitude Family Office, LLC49$1.64K0.00%−175−78.1%Reduced
Steigerwald, Gordon & Koch Inc.49$1.64K0.00%00.0%Unchanged
Lummis Asset Management, LP50$1.68K0.00%+50New
Anchor Investment Management, LLC55$1.84K0.00%00.0%Unchanged
Rossby Financial, LCC55$1.84K0.00%+16+41.0%Added
Marquette Asset Management, LLC55$1.84K0.00%+55New
Hazlett, Burt & Watson, Inc.66$2.00K0.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc60$2.09K0.00%−23−27.7%Reduced
Dogwood Wealth Management LLC65$2.18K0.00%+23+54.8%Added
Hager Investment Management Services, LLC65$2.18K0.00%+65New
Private Wealth Management Group, LLC65$2.18K0.00%00.0%Unchanged
Armstrong Advisory Group, Inc73$2.45K0.00%00.0%Unchanged
St Germain D J Co Inc75$2.52K0.00%00.0%Unchanged
South State Corp.84$2.82K0.00%+53+171.0%Added
Wealth Enhancement Trust Services, Inc.85$2.85K0.00%+85New
SHP Wealth Management86$2.88K0.00%+86New
Capital Analysts, LLC100$3.00K0.00%00.0%Unchanged
Keating Financial Advisory Services, Inc.98$3.29K0.00%+98New
Crewe Advisors LLC108$3.62K0.00%00.0%Unchanged
Salomon & Ludwin, LLC108$3.77K0.00%+108New
SBI Securities Co., Ltd.120$4.03K0.00%−81−40.3%Reduced
High Note Wealth, LLC121$4.06K0.00%−6−4.7%Reduced
Bayban122$4.09K0.00%+122New
JFS Wealth Advisors, LLC126$4.23K0.00%+53+72.6%Added
ZRC Wealth Management, LLC127$4.26K0.00%−39−23.5%Reduced
Pinnacle Wealth Planning Services, Inc.127$4.26K0.00%+127New
Itau Unibanco Holding S.A.176$5.90K0.00%+8+4.8%Added
Clal Insurance Enterprises Holdings Ltd182$6.00K0.00%−333−64.7%Reduced
Basecamp Wealth Advisors LLC180$6.04K0.00%+180New
Dunhill Financial, LLC48$6.24K0.00%−68−58.6%Reduced
Sunbelt Securities, Inc.193$6.47K0.00%+5+2.7%Added
Gunpowder Capital Management, LLC dba Oliver Wealth Management212$7.11K0.01%+212New
N.E.W. Advisory Services LLC215$7.21K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc225$7.55K0.00%00.0%Unchanged
Signature Equity Partners, LLC228$7.64K0.00%+228New
Elequin Capital LP235$7.88K0.00%+235New
Trust Co of Vermont238$7.98K0.00%+238New
Westside Investment Management, Inc.239$8.04K0.00%00.0%Unchanged
Mascoma Wealth Management LLC250$8.38K0.00%00.0%Unchanged
Kohmann Bosshard Financial Services, LLC251$8.41K0.00%+251New
Atlantic Union Bankshares Corp256$8.60K0.00%00.0%Unchanged
ORG Partners LLC262$8.79K0.00%+262New
CWM Advisors, LLC272$9.11K0.00%+272New
Prestige Wealth Management Group LLC310$10.4K0.00%00.0%Unchanged
Smartleaf Asset Management LLC310$10.5K0.00%−265−46.1%Reduced
CX Institutional336$11.0K0.00%+26+8.4%Added
T. Rowe Price Investment Management, Inc.312$11.0K0.00%+312New
Glen Eagle Advisors, LLC332$11.1K0.00%00.0%Unchanged
Retirement Wealth Solutions LLC332$11.1K0.01%−16−4.6%Reduced
TCTC Holdings, LLC340$11.4K0.00%00.0%Unchanged
Activest Wealth Management351$11.8K0.00%+351New
Banque Cantonale Vaudoise348$12.0K0.00%00.0%Unchanged
Quent Capital, LLC362$12.1K0.00%+276+320.9%Added
Parkside Financial Bank & Trust420$14.1K0.00%+33+8.5%Added
Elyxium Wealth, LLC433$14.5K0.00%+433New
WPG Advisers, LLC453$15.2K0.01%+307+210.3%Added
Private Trust Co NA455$15.3K0.00%−447−49.6%Reduced
Bank of Jackson Hole Trust463$15.5K0.01%−128−21.7%Reduced
Guinness Asset Management LTD489$16.7K0.00%+489New
Covestor Ltd510$17.0K0.01%−1,843−78.3%Reduced
Centerpoint Advisors, LLC504$17.0K0.01%00.0%Unchanged
SageView Advisory Group, LLC510$17.1K0.00%+510New
Rexford Capital Inc525$17.6K0.01%00.0%Unchanged
Vega Investment Solutions574$19.3K0.00%+574New
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.585$19.7K0.00%00.0%Unchanged
Plante Moran Financial Advisors, LLC595$20.0K0.00%00.0%Unchanged
Manchester Capital Management LLC610$20.5K0.00%−22,555−97.4%Reduced
Root Financial Partners, LLC616$20.7K0.00%−282−31.4%Reduced
Trust Co625$21.0K0.00%00.0%Unchanged
Canton Hathaway, LLC645$21.6K0.00%00.0%Unchanged