TTEK TETRA TECH INC NEW

COM (common), issuer CIK 831641

Filings received so far for Q3 2026: 20 13F filers report a position in TTEK shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.

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, Q3 2026

Filers in the available 13F reports with a share position at 2026-09-30, 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.

Holder	Shares	Value	% of portfolio	Change	Source
Perpetual Ltdin group Perpetual Ltd	432,995	$14.3M	0.22%	+6,048	13F-HR Timeline Group
Sarasin & Partners LLPin group Sarasin & Partners LLP	417,446	$13.8M	0.15%	-55,456	13F-HR Timeline Group
CX Institutional	192,037	$6.33M	0.17%	+191,725	13F-HR Timeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…	94,755	$2.96M	<0.01%	+27,299	13F-HR Timeline
GATEWAY INVESTMENT ADVISERS LLC	25,124	$828K	0.01%	new	13F-HR Timeline
BAILARD, INC.	24,200	$797K	0.02%	0	13F-HR Timeline
Legacy Wealth Asset Management, LLC	22,814	$752K	0.16%	-383	13F-HR Timeline
Farther Finance Advisors, LLC	8,744	$288K	<0.01%	+3,955	13F-HR Timeline
NorthCrest Asset Manangement, LLC	6,043	$202K	<0.01%	new	13F-HR Timeline
GAMMA Investing LLC	4,243	$140K	<0.01%	+742	13F-HR Timeline
Versant Capital Management, Inc	1,255	$41.4K	<0.01%	+134	13F-HR Timeline
True Wealth Design, LLC	1,066	$35.1K	0.01%	+354	13F-HR Timeline
MassMutual Private Wealth & Trust, FSB	338	$11.1K	<0.01%	-40	13F-HR Timeline
ELEVATION WEALTH PARTNERS, LLC	279	$9.19K	<0.01%	0	13F-HR Timeline
Retirement Wealth Solutions LLC	149	$4.92K	<0.01%	0	13F-HR Timeline
CoreCap Advisors, LLC	58	$1.91K	<0.01%	+15	13F-HR Timeline
MJT & Associates Financial Advisory Gro…	47	$1.55K	<0.01%	+4	13F-HR Timeline
Marquette Asset Management, LLC	18	$594	<0.01%	0	13F-HR Timeline
TOTH FINANCIAL ADVISORY CORP	15	$495	<0.01%	new	13F-HR Timeline
Planning Strategies Inc.	3	$99	<0.01%	-3	13F-HR Timeline