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BLAIR WILLIAM & CO/IL

Position in TTEK — Tetra Tech Inc

CIK 902367 CHICAGO, IL

Position in TTEK

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$4,545,148
-$227,125 QoQ
Shares Held
157,326
-0.7% QoQ
Ownership
0.061%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#131
of 549 holders
Holding Since
Jun 2024
9 quarters on record
Voting authority Sole 76% Shared 0% None 24%

Common Shares in TTEK Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $221,709,884 across 15 Engineering & Construction names. TTEK ranks #7 (2.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
7 TTEK
Tetra Tech Inc
This page
157,326 $4,545,148

All Filings in TTEK

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9 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,545,148 157,326
2026-03-31 $4,772,273 158,442
2025-12-31 $4,142,760 123,517
2025-09-30 $7,875,977 235,949
2025-06-30 $8,356,169 232,374
2025-03-31 $3,684,388 125,962
2024-12-31 $7,246,656 181,894
2024-09-30 $22,067,248 467,923
2024-06-30 $15,065,064 73,675