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Disclosery

TTEK TETRA TECH INC NEW

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COM (common), issuer CIK 831641

535 managers (555 13F filers) reported a position in TTEK shares at 2026-06-30, 253,342,466 shares in all. 48 filers opened a position and 86 filers sold out during the quarter.

Managers
535
13F filers
555
New
48
Added
206
Reduced
214
Sold out
86
Shares held by filers
253,342,466

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
STATE OF MICHIGAN RETIREMENT SYSTEM60,740$1.75M0.01%-2,00013F-HRTimeline
ICON ADVISERS INC/CO60,000$1.73M0.33%new13F-HRTimeline
New Age Alpha Advisors, LLC56,441$1.63M0.07%-1,16313F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA55,884$1.61M0.01%+36,79613F-HRTimelineGroup
Penserra Capital Management LLCin group Penserra Capital Management L…55,672$1.61M0.01%new13F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS55,254$1.6M<0.01%+11,44313F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD54,500$1.57M0.04%013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND53,625$1.55M0.02%+10013F-HRTimeline
Vest Financial, LLC53,612$1.55M0.02%+72313F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC51,511$1.49M0.01%+2,58313F-HR/ATimeline
Tributary Capital Management, LLC51,292$1.48M0.12%+18,69313F-HRTimeline
Engineers Gate Manager LP50,310$1.45M0.02%-18,85113F-HRTimeline
Hillsdale Investment Management Inc.48,450$1.4M0.03%+15,10013F-HRTimeline
South Dakota Investment Council48,172$1.39M0.02%+1,10013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…47,505$1.37M0.02%+38,00113F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS47,220$1.36M<0.01%-8,40713F-HRTimeline
IQ EQ FUND MANAGEMENT (IRELAND) Ltd47,210$1.36M0.09%+5,72313F-HRTimeline
Regal Investment Advisors LLC45,299$1.31M0.07%+16,04913F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC44,075$1.27M<0.01%-30,29513F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources42,811$1.24M<0.01%-18,73113F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC41,812$1.21M<0.01%+15313F-HRTimeline
Advisory Services Network, LLC40,936$1.18M0.01%+1,81913F-HRTimeline
FORMULA GROWTH LTD39,050$1.13M0.4%013F-HRTimeline
Vancity Investment Management Ltd38,372$1.11M0.17%+7,14613F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC37,481$1.08M0.01%-2,17113F-HRTimeline
EVEXIA WEALTH LLC31,923$1.08M0.29%+11,80813F-HRTimeline
Kestra Advisory Services, LLCgroup of 2 filers holding37,188$1.07M-6,955Timeline
XPONANCE LLC36,147$1.04M0.01%-8,78513F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS35,255$1.02M0.05%+5,87113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
MARSHALL WACE, LLPin group MARSHALL WACE, LLP35,094$1.01M<0.01%-684,52413F-HRTimelineGroup
GROUP ONE TRADING LLC33,974$982K0.03%+28,26513F-HRTimeline
WCM INVESTMENT MANAGEMENT, LLC33,914$979K<0.01%-14,75113F-HRTimeline
Atria Investments, Inc33,401$965K0.01%-53413F-HRTimeline
Lazard Freres Gestion S.A.S.33,330$962K0.02%+7,50013F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…32,182$930K0.01%+1,10513F-HRTimelineGroup
PFG Investments, LLC31,137$900K0.03%+7913F-HRTimeline
Summit Trail Advisors, LLC30,971$895K0.01%-30,73013F-HRTimeline
D.A. DAVIDSON & CO.29,965$866K<0.01%-1513F-HRTimeline
CAXTON ASSOCIATES LLP29,865$863K0.02%-105,94813F-HRTimeline
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…29,452$847K0.1%-10,74213F-HRTimeline
Penobscot Investment Management Company…28,785$832K0.06%-34,24513F-HRTimeline
NATURAL INVESTMENTS, LLC28,409$820K0.18%+6,81813F-HRTimeline
Hunter Perkins Capital Management, LLC27,809$803K0.18%new13F-HRTimeline
INCEPTIONR LLC27,391$791K0.19%+12,05513F-HRTimeline
Cetera Investment Advisers27,388$791K<0.01%-10,07013F-HRTimeline
Ridge Creek Global, Inc26,545$767K0.6%-51013F-HRTimeline
SEGALL BRYANT & HAMILL, LLC26,267$759K0.01%-12013F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…26,162$756K0.01%+15,56513F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…25,946$750K<0.01%013F-HRTimeline
CAPITAL GROUP INVESTMENT MANAGEMENT PTE…in group CAPITAL GROUP INVESTMENT MANA…25,906$748K0.11%013F-HRTimelineGroup
State of Alaska, Department of Revenue25,429$734K0.01%-67313F-HRTimeline
BAILARD, INC.24,200$699K0.01%013F-HRTimeline
Perigon Wealth Management, LLC23,868$690K0.01%+3013F-HRTimeline
HARBOUR INVESTMENTS, INC.23,475$678K0.01%-713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…23,348$675K<0.01%-30413F-HRTimelineGroup
CenterBook Partners LP23,233$671K0.03%-22,80613F-HRTimeline
Legacy Wealth Asset Management, LLC23,197$670K0.15%-9,86313F-HRTimeline
Cullen Capital Management, LLC23,096$667K0.01%+3,25913F-HRTimeline
M&T Bank Corpin group M&T Bank Corp23,005$665K<0.01%+58713F-HRTimelineGroup
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…23,000$664K0.04%-25,05913F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.22,753$657K<0.01%-8,43513F-HRTimelineGroup
COLDSTREAM CAPITAL MANAGEMENT INC22,625$654K0.01%+3,07313F-HRTimeline
State of Wyoming22,178$641K0.06%+1,63613F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.21,698$627K<0.01%-2,21113F-HRTimelineGroup
Caprock Group, LLC21,617$625K0.01%-9,67613F-HRTimeline
FIRST WILSHIRE SECURITIES MANAGEMENT INC21,500$621K0.13%013F-HRTimeline
SECURIAN ASSET MANAGEMENT, INC19,139$605K0.02%-8513F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC20,867$603K<0.01%+2,71513F-HRTimelineGroup
Impact Partnership Wealth, LLC20,832$602K0.06%+6,37813F-HRTimeline
Dynamic Advisor Solutions LLC20,443$591K0.02%+1,61813F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP20,096$581K<0.01%new13F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP20,074$580K<0.01%-28,87913F-HRTimelineGroup
Graham Capital Management, L.P.19,806$572K0.02%-28513F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…19,617$567K0.01%+9,81613F-HRTimelineGroup
Focus Partners Wealthin group Focus Partners Wealth19,532$564K<0.01%-30,49413F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC19,404$561K<0.01%-27713F-HRTimeline
Ausdal Financial Partners, Inc.19,165$554K0.02%+7,25513F-HRTimeline
Campbell & CO Investment Adviser LLC18,491$534K0.03%+5,85113F-HRTimeline
Chicago Partners Investment Group LLC17,300$529K0.01%-1,11113F-HRTimeline
Ballentine Partners, LLC18,085$522K0.01%+3,65013F-HRTimeline
Qtron Investments LLC17,922$518K0.07%-2,39713F-HRTimeline
First Pacific Financial17,615$509K0.06%-40313F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding17,293$500K+16,708Timeline
AIA Group Ltdin group AIA Group Ltd17,141$495K0.01%013F-HR/ATimelineGroup
First Business Financial Services, Inc.16,820$486K0.04%013F-HRTimeline
BOWEN HANES & CO INC15,975$481K0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd16,618$480K0.01%-68,32213F-HRTimelineGroup
NWAM LLC16,553$478K0.02%+1813F-HRTimeline
AlphaGrep UK Ltd16,350$472K0.14%+7,16413F-HRTimeline
Arkadios Wealth Advisors16,261$470K0.01%-4,34213F-HRTimeline
DOVER ADVISORS, LLC13,600$456K0.19%-4,58013F-HRTimeline
SYON CAPITAL LLC15,699$454K0.02%-16,80713F-HRTimeline
GREAT LAKES ADVISORS, LLC15,325$443K<0.01%-2,44813F-HRTimeline
PINEBRIDGE INVESTMENTS LLC15,279$441K<0.01%+4,27313F-HRTimeline
New Hampshire Trust15,179$439K0.08%013F-HRTimeline
Midwest Trust Co15,179$439K<0.01%013F-HRTimeline
Compass Wealth Management LLC15,125$437K0.08%013F-HRTimeline
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …15,025$434K0.01%013F-HRTimelineGroup
Inspire Investing, LLCin group Inspire Investing, LLC14,966$432K0.02%+1,99513F-HRTimelineGroup
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC14,957$432K<0.01%+2,72013F-HRTimelineGroup
MAI Capital Management14,876$430K<0.01%+13,60413F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\14,721$425K<0.01%-4,46913F-HRTimelineGroup
Trexquant Investment LP14,712$425K<0.01%-56,28313F-HRTimeline
DIVERSIFIED TRUST CO14,502$419K0.01%-1,06113F-HRTimeline
Ethic Inc.14,348$415K0.01%new13F-HRTimeline
Patten Group, Inc.14,226$411K0.06%-3,42813F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.14,016$405K<0.01%-5,92813F-HRTimelineGroup
Ensign Peak Advisors, Inc13,895$401K<0.01%+5013F-HRTimeline
SWP FINANCIAL LLC13,842$400K0.18%+713F-HRTimeline
Trium Capital LLP13,810$399K0.25%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Utah Retirement Systems13,800$399K<0.01%013F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC13,752$397K0.01%-8,49613F-HRTimeline
Integrated Wealth Concepts LLC13,352$386K<0.01%+2313F-HR/ATimeline
ALLSTATE CORPin group ALLSTATE CORP13,229$382K<0.01%-13,53113F-HRTimelineGroup
Williams Jones Wealth Management, LLC.13,150$380K<0.01%-243,14013F-HRTimeline
HUB Investment Partners, LLC13,125$379K0.01%+1,05713F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS12,987$375K<0.01%013F-HRTimelineGroup
Maryland State Retirement & Pension Sys…12,454$360K0.01%013F-HRTimeline
NewEdge Wealth, LLC12,381$358K<0.01%+4,82513F-HRTimeline
AZZAD ASSET MANAGEMENT INC /ADV12,291$355K0.03%new13F-HRTimeline
Janney Montgomery Scott LLC12,256$354K<0.01%new13F-HRTimeline
RWC Asset Management LLPin group RWC ASSET ADVISORS (US) LLC12,253$354K0.01%013F-HRTimelineGroup
Arax Advisory Partners12,223$353K<0.01%+8,77013F-HRTimeline
J.W. COLE ADVISORS, INC.12,156$351K0.01%-11413F-HRTimeline
ELCO Management Co., LLC12,141$351K0.15%+1,54813F-HRTimeline
Radnor Capital Management, LLC12,125$350K0.05%-32,09513F-HRTimeline
MGO ONE SEVEN LLC12,068$349K0.01%-79813F-HRTimeline
Ledyard National Bank12,035$348K0.03%-3,03313F-HRTimeline
Groupe la Francaisein group Groupe la Francaise12,000$347K<0.01%013F-HRTimelineGroup
DEFINE FINANCIAL, LLC11,766$340K0.16%+2913F-HRTimeline
Clear Creek Financial Management, LLC11,752$340K0.02%-1,65713F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC11,669$337K<0.01%+4,52013F-HRTimelineGroup
Centiva Capital, LP11,615$336K0.01%new13F-HRTimeline
NORTH STAR ASSET MANAGEMENT INC11,500$332K0.01%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC11,498$332K<0.01%-255,07513F-HRTimelineGroup
&PARTNERS11,063$320K<0.01%-4,78213F-HRTimeline
AE Wealth Management LLC11,056$319K<0.01%+1,45713F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …11,023$318K<0.01%-58713F-HRTimelineGroup
HB Wealth Management, LLC10,998$318K<0.01%+2,22513F-HRTimeline
MML INVESTORS SERVICES, LLC10,822$313K<0.01%-21313F-HRTimeline
Jain Global LLC10,580$306K<0.01%new13F-HRTimeline
Laird Norton Wetherby Trust Company, LLCin group Laird Norton Wetherby Trust C…10,548$305K0.01%-1,66013F-HRTimelineGroup
Steward Partners Investment Advisory, L…10,523$304K<0.01%-2,52413F-HRTimeline
ProShare Advisors LLC10,236$296K<0.01%-22513F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK10,235$296K<0.01%-7613F-HRTimelineGroup
Vise Technologies, Inc.10,185$294K<0.01%+3,62113F-HRTimeline
Baker Avenue Asset Management, LP10,096$292K0.01%-2,06913F-HRTimeline
Savant Capital, LLCin group Savant Capital, LLC9,734$291K<0.01%new13F-HRTimelineGroup
IMC-Chicago, LLC10,023$290K<0.01%-13,71713F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/9,939$287K<0.01%-1,20513F-HRTimelineGroup
Malaga Cove Capital, LLC9,713$281K0.09%-72813F-HRTimeline
Dakota Wealth Management9,656$279K0.01%-913F-HRTimeline
Modern Wealth Management, LLC9,529$275K<0.01%+2,98213F-HRTimeline
Bank Julius Baer & Co. Ltd, Zurich9,500$274K<0.01%013F-HRTimeline
Y.D. More Investments Ltdin group Y.D. More Investments Ltd9,457$273K0.01%new13F-HRTimelineGroup
Abacus Wealth Partners, LLC9,405$272K0.03%-6,49513F-HRTimeline
Marex Group Ltdin group Marex Group Ltd9,100$263K<0.01%+1,57413F-HRTimelineGroup
Merit Financial Group, LLC8,975$259K<0.01%-80813F-HR/ATimeline
Empirical Financial Services, LLC d.b.a…8,974$259K<0.01%-6,95413F-HRTimeline
Sanctuary Advisors, LLC8,941$258K<0.01%+13013F-HRTimeline
MQS Management LLC8,827$255K0.31%new13F-HRTimeline
Kera Capital Partners, Inc.8,790$254K0.02%-2,74213F-HRTimeline
Bridgefront Capital, LLC8,784$254K0.07%-39,68713F-HRTimeline
SHELTON CAPITAL MANAGEMENT8,767$253K<0.01%013F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC8,476$245K<0.01%+2,34013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC8,401$243K<0.01%-198,40513F-HRTimelineGroup
OneDigital Investment Advisors LLC8,399$243K<0.01%new13F-HRTimeline
Mariner, LLCin group Mariner, LLC8,291$240K<0.01%-3,34913F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.8,286$239K<0.01%new13F-HRTimelineGroup
Rathbones Group PLC8,250$238K<0.01%-4,09913F-HRTimeline
Cambridge Investment Research Advisors,…8,248$238K<0.01%-2,49313F-HR/ATimeline
STRS OHIO8,143$235K<0.01%+1,92813F-HRTimeline
CIBC Asset Management Inc8,066$233K<0.01%-42213F-HRTimeline
KBC Group NVin group KBC Group NV7,936$229K<0.01%013F-HRTimelineGroup
Claret Asset Management Corp7,813$226K0.02%new13F-HRTimeline
Sterling Capital Management LLC7,821$226K<0.01%+37713F-HRTimeline
Aaron Wealth Advisors LLC7,751$224K0.01%-1,43013F-HRTimeline
North Dakota State Investment Board7,727$223K0.01%+5213F-HRTimeline
UMB Bank, n.a.7,582$219K<0.01%-74713F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Krilogy Financial LLC7,522$217K0.01%new13F-HRTimeline
Blue Trust, Inc.7,518$217K<0.01%+1,81213F-HRTimeline
PHILADELPHIA TRUST CO7,500$217K0.01%013F-HRTimeline
Ground Swell Capital, LLC7,451$215K0.23%new13F-HRTimeline
New England Professional Planning Group…7,415$214K0.08%013F-HRTimeline
AlphaCore Capital LLC7,372$213K<0.01%new13F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP7,359$213K0.02%-6,49513F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC7,313$211K0.01%-74713F-HRTimeline
Pinnacle Financial Partners, Inc.in group Pinnacle Financial Partners, …7,260$210K<0.01%-4513F-HRTimelineGroup
Fiduciary Trust Coin group Fiduciary Trust Co7,225$209K<0.01%013F-HRTimelineGroup
Global Retirement Partners, LLC7,109$205K<0.01%13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC7,068$204K<0.01%-28,15013F-HRTimelineGroup
BRIGHTON JONES LLC6,951$201K<0.01%new13F-HRTimeline
Bayesian Capital Management, LP6,934$200K0.13%new13F-HRTimeline
Vestmark Advisory Solutions, Inc.6,930$200K<0.01%new13F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.6,046$175K<0.01%+1,25413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Nykredit A/Sin group Nykredit A/S5,871$170K<0.01%13F-HR/ATimelineGroup
Allworth Financial LP5,645$163K<0.01%+2,04813F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management5,375$155K<0.01%+4,22313F-HRTimelineGroup
Farther Finance Advisors, LLC4,789$138K<0.01%-1,57213F-HRTimeline
Vestcor Inc4,699$136K<0.01%013F-HRTimeline