How many institutional investors hold TTEK?

4 tracked institutional investors disclosed a position in TTEK (TETRA TECH INC NEW) in their most recent 13F filing.

Who is the largest institutional holder of TTEK?

Ken Griffin, Citadel Advisors, holds the largest disclosed position in TTEK, valued at $54M.

Where does this TTEK ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

TTEK — TETRA TECH INC NEW

Name: TETRA TECH INC NEW (TTEK) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

About TETRA TECH INC NEW (TTEK)

TETRA TECH INC NEW (TTEK) appears in the most recent 13F filings of 4 tracked institutional investors. The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $54M. Across recent filings, tracked investors recorded 1 new positions, 1 increased, 0 reduced, and 0 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in TTEK

100

/100

Strong Institutional Accumulation

Added / Increased2

Reduced0

Exited0

BearishBullish

Crowded Trade Score™

How many top investors track TTEK

/100

Emerging Interest

4investors

A small number of top investors own this.

UndiscoveredCrowded

151015+

TTEK Ownership Composition

How TETRA TECH INC NEW is held across tracked investor types, based on reported 13F positions.

Dominant Type

Other

66% of tracked value

Institutions

tracked investors

Total Reported

$103.9M

combined 13F value

Other65.8%
Hedge Funds34.2%

Other(3)

65.8%

Hedge Funds(1)

34.2%

Tracked investors reporting TTEK

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	1.8M	$53.9M	0.01%	Mar 31, 2026
Steve Cohen	Point72 Asset Management	33.8M	$35.6M	0.05%	Mar 31, 2026
Izzy Englander	Millennium Management	266.6K	$8M	0.00%	Mar 31, 2026
Ray Dalio	Bridgewater Associates	213.9K	$6.4M	0.03%	Mar 31, 2026

Ken GriffinMar 31, 2026
Citadel Advisors
Shares
1.8M
Value
$53.9M
% Portfolio
0.01%
Steve CohenMar 31, 2026
Point72 Asset Management
Shares
33.8M
Value
$35.6M
% Portfolio
0.05%
Izzy EnglanderMar 31, 2026
Millennium Management
Shares
266.6K
Value
$8M
% Portfolio
0.00%
Ray DalioMar 31, 2026
Bridgewater Associates
Shares
213.9K
Value
$6.4M
% Portfolio
0.03%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Ray Dalio	Increased	232.72%	$6.4M	May 15, 2026
Ray Dalio	New	—	$2.2M	Feb 13, 2026

Ray Dalio
Increased
$6.4M(232.72%)May 15, 2026
Ray Dalio
New
$2.2MFeb 13, 2026

Frequently asked questions

How many institutional investors hold TTEK?: 4 tracked institutional investors disclosed a position in TTEK (TETRA TECH INC NEW) in their most recent 13F filing.
Who is the largest institutional holder of TTEK?: Ken Griffin, Citadel Advisors, holds the largest disclosed position in TTEK, valued at $54M.
Did institutional ownership of TTEK increase or decrease?: Across recent 13F filings, tracked investors recorded 1 new positions, 1 increased, 0 reduced, and 0 fully exited TTEK.
Where does this TTEK ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.