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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 2024

Institutional positions in Tetra Tech Inc as of Sep 30, 2024. 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
646
+53 vs. Q2 2024
Shares held
238.2M
+22.3M (+10.3%) vs. Q2 2024Converted for a 5-for-1 split
Total value
$11.2B
+$2.43B (+27.7%) vs. Q2 2024
New holders
95
189 more added
Sold out
42
234 more reduced

7 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2024: 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 holdersQ3 2024: 646 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 heldQ3 2024: $11.2B
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, Q3 2024

Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q2 2024.

Institutions holding TTEK in Q3 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Osprey Private Wealth LLC170,325$8.03M5.63%+170,325New
Castleark Management LLC173,550$8.18M0.33%−6,300−3.5%ReducedConverted for a 5-for-1 split
Bank of Montreal176,550$8.19M0.00%−8,695−4.7%ReducedConverted for a 5-for-1 split
S&T Bank179,687$8.47M2.22%−11,083−5.8%ReducedConverted for a 5-for-1 split
Scholtz & Company, LLC186,245$8.78M4.14%−5,305−2.8%ReducedConverted for a 5-for-1 split
Raymond James & Associates187,676$8.85M0.01%+38,571+25.9%AddedConverted for a 5-for-1 split
Sumitomo Mitsui DS Asset Management Company, Ltd189,723$8.95M0.10%+58,163+44.2%AddedConverted for a 5-for-1 split
Perpetual Ltd196,200$9.25M0.10%00.0%UnchangedConverted for a 5-for-1 split
GHP Investment Advisors, Inc.197,248$9.30M0.43%00.0%UnchangedConverted for a 5-for-1 split
Kingdon Capital Management, L.L.C.200,000$9.43M1.38%00.0%UnchangedConverted for a 5-for-1 split
Russell Investments Group, Ltd.201,583$9.51M0.01%−10,402−4.9%ReducedConverted for a 5-for-1 split
State Board of Administration of Florida Retirement System202,102$9.53M0.02%00.0%UnchangedConverted for a 5-for-1 split
Thornburg Investment Management Inc205,021$9.67M0.13%−119,134−36.8%ReducedConverted for a 5-for-1 split
Lombard Odier Asset Management (Europe) Ltd206,910$9.76M0.44%−5,335−2.5%ReducedConverted for a 5-for-1 split
Janus Henderson Group PLC213,123$10.0M0.01%+1,788+0.8%AddedConverted for a 5-for-1 split
Daiwa Securities Group Inc.213,900$10.1M0.05%−12,000−5.3%ReducedConverted for a 5-for-1 split
Nicholas Company, Inc.214,190$10.1M0.16%−21,385−9.1%ReducedConverted for a 5-for-1 split
Aptus Capital Advisors, LLC216,438$10.2M0.16%+29,303+15.7%AddedConverted for a 5-for-1 split
National Bank of Canada217,313$10.2M0.01%−3,897−1.8%ReducedConverted for a 5-for-1 split
Bahl & Gaynor Inc218,300$10.3M0.05%+1,555+0.7%AddedConverted for a 5-for-1 split
Jane Street Group, LLC218,333$10.3M0.02%−86,702−28.4%ReducedConverted for a 5-for-1 split
Los Angeles Capital Management LLC220,235$10.4M0.04%+47,355+27.4%AddedConverted for a 5-for-1 split
Moran Wealth Management, LLC220,955$10.4M0.32%−5,990−2.6%ReducedConverted for a 5-for-1 split
Manufacturers Life Insurance Company, The223,952$10.6M0.01%−8,163−3.5%ReducedConverted for a 5-for-1 split
Van Eck Associates Corp218,850$10.6M0.01%+36,865+20.3%AddedConverted for a 5-for-1 split
Systematic Financial Management LP226,156$10.7M0.27%+1,641+0.7%AddedConverted for a 5-for-1 split
Mercer Global Advisors Inc226,848$10.7M0.02%+1,633+0.7%AddedConverted for a 5-for-1 split
Great West Life Assurance Co227,436$10.7M0.02%+12,191+5.7%AddedConverted for a 5-for-1 split
Engineers Gate Manager LP230,932$10.9M0.21%+27,197+13.3%AddedConverted for a 5-for-1 split
Dana Investment Advisors, Inc.239,372$11.3M0.37%−27,963−10.5%ReducedConverted for a 5-for-1 split
Jacobs Levy Equity Management, Inc248,001$11.7M0.05%+248,001New
California State Teachers Retirement System253,094$11.9M0.01%−7,881−3.0%ReducedConverted for a 5-for-1 split
Renaissance Technologies LLC261,600$12.3M0.02%+222,500+569.1%AddedConverted for a 5-for-1 split
Ninety One North America, Inc.265,745$12.5M0.85%−21,955−7.6%ReducedConverted for a 5-for-1 split
DekaBank Deutsche Girozentrale279,017$12.8M0.02%−1,130,198−80.2%ReducedConverted for a 5-for-1 split
Thematics Asset Management273,750$12.9M0.51%−15,000−5.2%ReducedConverted for a 5-for-1 split
New York State Teachers Retirement System284,945$13.4M0.03%−20,100−6.6%ReducedConverted for a 5-for-1 split
Skandinaviska Enskilda Banken AB (publ)285,515$13.5M0.06%00.0%UnchangedConverted for a 5-for-1 split
Asset Management One Co.,Ltd.296,121$13.9M0.05%−5,154−1.7%ReducedConverted for a 5-for-1 split
Cubist Systematic Strategies, LLC300,285$14.2M0.21%+9,210+3.2%AddedConverted for a 5-for-1 split
King Luther Capital Management Corp301,485$14.2M0.06%+103,815+52.5%AddedConverted for a 5-for-1 split
Qube Research & Technologies Ltd302,538$14.3M0.03%−23,932−7.3%ReducedConverted for a 5-for-1 split
Arrowstreet Capital, Limited Partnership308,262$14.5M0.01%+287,927+1,415.9%AddedConverted for a 5-for-1 split
Corebridge Financial, Inc.316,978$14.9M0.08%−22,047−6.5%ReducedConverted for a 5-for-1 split
Natixis317,990$15.0M0.09%−56,510−15.1%ReducedConverted for a 5-for-1 split
Renaissance Investment Group LLC333,328$15.7M3.27%−3,142−0.9%ReducedConverted for a 5-for-1 split
Winton Group Ltd335,270$15.8M1.11%+335,270New
Williams Jones Wealth Management, LLC.348,912$16.5M0.19%+183,102+110.4%AddedConverted for a 5-for-1 split
State of Wisconsin Investment Board350,530$16.5M0.04%+22,845+7.0%AddedConverted for a 5-for-1 split
HSBC Holdings PLC367,944$17.3M0.01%+41,784+12.8%AddedConverted for a 5-for-1 split
UBS Group AG369,991$17.4M0.00%−16,734−4.3%ReducedConverted for a 5-for-1 split
Deutsche Bank AG378,203$17.8M0.01%+236,308+166.5%AddedConverted for a 5-for-1 split
Kennedy Capital Management, Inc.380,718$18.0M0.40%−110,642−22.5%ReducedConverted for a 5-for-1 split
Macquarie Group Ltd384,455$18.1M0.02%+21,930+6.0%AddedConverted for a 5-for-1 split
Retirement Systems of Alabama390,476$18.4M0.07%−5,214−1.3%ReducedConverted for a 5-for-1 split
Waratah Capital Advisors Ltd.393,491$18.6M1.11%+159,116+67.9%AddedConverted for a 5-for-1 split
Two Sigma Investments, LP406,601$19.2M0.04%+6,061+1.5%AddedConverted for a 5-for-1 split
Legal & General Group Plc408,064$19.2M0.01%+3,314+0.8%AddedConverted for a 5-for-1 split
Agf Management Ltd411,143$19.4M0.10%−39,817−8.8%ReducedConverted for a 5-for-1 split
Cookson Peirce & Co Inc432,616$20.4M0.96%+393,566+1,007.9%AddedConverted for a 5-for-1 split
Winslow Asset Management Inc446,357$21.1M3.89%−3,103−0.7%ReducedConverted for a 5-for-1 split
Fernbridge Capital Management LP451,402$21.3M1.31%−237,688−34.5%ReducedConverted for a 5-for-1 split
Citadel Advisors LLC465,447$22.0M0.02%−357,238−43.4%ReducedConverted for a 5-for-1 split
Blair William & Co467,923$22.1M0.06%+99,548+27.0%AddedConverted for a 5-for-1 split
Martingale Asset Management L P470,761$22.2M0.51%−31,429−6.3%ReducedConverted for a 5-for-1 split
Bank of Nova Scotia517,241$24.4M0.05%−79,194−13.3%ReducedConverted for a 5-for-1 split
Swiss National Bank522,500$24.6M0.02%−3,500−0.7%ReducedConverted for a 5-for-1 split
Trillium Asset Management, LLC530,457$25.0M0.61%−8,013−1.5%ReducedConverted for a 5-for-1 split
California Public Employees Retirement System542,576$25.6M0.02%+16,401+3.1%AddedConverted for a 5-for-1 split
Zacks Investment Management545,693$25.7M0.22%+58,308+12.0%AddedConverted for a 5-for-1 split
Aviva PLC562,825$26.5M0.07%00.0%UnchangedConverted for a 5-for-1 split
Teacher Retirement System of Texas599,289$28.3M0.13%+548,359+1,076.7%AddedConverted for a 5-for-1 split
New York State Common Retirement Fund615,095$29.0M0.04%−95,865−13.5%ReducedConverted for a 5-for-1 split
Managed Asset Portfolios, LLC627,506$29.6M4.18%−254,529−28.9%ReducedConverted for a 5-for-1 split
Duff & Phelps Investment Management Co630,960$29.8M0.34%−102,680−14.0%ReducedConverted for a 5-for-1 split
SEI Investments Co642,218$30.3M0.04%+193,473+43.1%AddedConverted for a 5-for-1 split
BNP Paribas Arbitrage, SA642,531$30.3M0.03%−248,044−27.9%ReducedConverted for a 5-for-1 split
LPL Financial LLC655,440$30.9M0.01%+39,885+6.5%AddedConverted for a 5-for-1 split
Segall Bryant & Hamill, LLC661,134$31.2M0.43%−119,901−15.4%ReducedConverted for a 5-for-1 split
Rheos Capital Works Inc.684,000$32.3M1.68%00.0%UnchangedConverted for a 5-for-1 split
Millennium Management LLC689,236$32.5M0.03%+186,966+37.2%AddedConverted for a 5-for-1 split
Federated Hermes, Inc.692,242$32.6M0.07%−171,998−19.9%ReducedConverted for a 5-for-1 split
TimesSquare Capital Management, LLC715,705$33.8M0.51%−65,520−8.4%ReducedConverted for a 5-for-1 split
Fisher Asset Management, LLC737,394$34.8M0.01%+135,184+22.4%AddedConverted for a 5-for-1 split
Neumeier Poma Investment Counsel LLC746,885$35.2M3.36%−255,970−25.5%ReducedConverted for a 5-for-1 split
Ameriprise Financial Inc747,133$35.2M0.01%00.0%UnchangedConverted for a 5-for-1 split
Principal Financial Group Inc754,702$35.6M0.02%−239,863−24.1%ReducedConverted for a 5-for-1 split
Rhumbline Advisers795,190$37.5M0.03%−6,020−0.8%ReducedConverted for a 5-for-1 split
UBS Asset Management Americas Inc798,465$37.7M0.01%−62,320−7.2%ReducedConverted for a 5-for-1 split
Lord, Abbett & Co. LLC804,341$37.9M0.12%−227,709−22.1%ReducedConverted for a 5-for-1 split
Schroder Investment Management Group836,617$38.8M0.04%+10,087+1.2%AddedConverted for a 5-for-1 split
Cerity Partners LLC856,842$40.4M0.09%−8,218−0.9%ReducedConverted for a 5-for-1 split
Envestnet Asset Management Inc865,913$40.8M0.01%−10,112−1.2%ReducedConverted for a 5-for-1 split
Value Holdings Management Co. LLC894,825$42.2M7.38%−50,000−5.3%ReducedConverted for a 5-for-1 split
Royal Bank of Canada897,679$42.3M0.01%−17,626−1.9%ReducedConverted for a 5-for-1 split
Nomura Asset Management Co Ltd914,550$43.1M0.13%−93,350−9.3%ReducedConverted for a 5-for-1 split
Goldman Sachs Group Inc925,296$43.6M0.01%−521,374−36.0%ReducedConverted for a 5-for-1 split
Wells Fargo & Company932,140$44.0M0.01%−6,450−0.7%ReducedConverted for a 5-for-1 split
Loomis Sayles & Co L P962,192$45.4M0.06%00.0%UnchangedConverted for a 5-for-1 split
Bain Capital Public Equity Management II, LLC965,989$45.6M2.07%−64,511−6.3%ReducedConverted for a 5-for-1 split