DOSSIER · 13F Holders · Q1 2026Technology · Services-Engineering Services
TTEK

TETRA TECH INC NEW

614 institutions still hold TETRA TECH INC NEW as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 88162G103·Services-Engineering Services·614 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$4.3B
visible holders
Holders
614
filers reporting
Concentration
18.67%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

614 institutions reported TTEK in Q1 2026. BlackRock, Inc. leads at 18.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$807M26.8M0.01%Q1 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$381M12.6M0.02%Q1 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$353M11.7M0.01%Q1 2026
04
Capital International Investors
CIK 0001562230
$343M11.4M0.08%Q1 2026
05
Pictet Asset Management Holding SA
CIK 0001993888
$290M9.6M0.31%Q1 2026
06
STATE STREET CORP
CIK 0000093751
$290M9.6M0.01%Q1 2026
07
Neuberger Berman Group LLC
CIK 0001465109
$219M7.3M0.17%Q1 2026
08
SANDS CAPITAL MANAGEMENT, LLC
CIK 0001020066
$201M6.7M0.79%Q1 2026
09
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$157M5.2M0.01%Q1 2026
10
FIL Ltd
CIK 0000318989
$146M4.8M0.11%Q1 2026
11
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$145M4.8M0.03%Q1 2026
12
Amundi
CIK 0001330387
$143M4.7M0.04%Q1 2026
13
Van Berkom & Associates Inc.
CIK 0001524408
$138M4.6M2.26%Q1 2026
14
Impax Asset Management Group plc
CIK 0001749768
$115M3.8M0.80%Q1 2026
15
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$114M3.8M0.02%Q1 2026
16
FERNBRIDGE CAPITAL MANAGEMENT LP
CIK 0001827734
$102M3.4M6.56%Q1 2026
17
FULLER & THALER ASSET MANAGEMENT, INC.
CIK 0001082327
$100M3.3M0.34%Q1 2026
18
LGT Group Foundation
CIK 0001911278
$95M3.2M1.16%Q1 2026
19
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$94M2.8M0.03%Q1 2026
20
Invesco Ltd.
CIK 0000914208
$88M2.9M0.01%Q1 2026
Page 1 of 31
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Insiders at TETRA TECH INC NEW
Batrack Dan LVolpi Kirsten MFeeler Jeffrey RThornburg Eric WRitrievi Kimberly EArgus Roger RObiaya ChristianaBirkenbeuel Gary