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GROUP ONE TRADING LLC

Position in TTEK — Tetra Tech Inc

CIK 932540 CHICAGO, IL

Position in TTEK

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$171,955
+$133,183 QoQ
Shares Held
5,709
+393.9% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2021
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in TTEK Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $3,338,279 across 11 Engineering & Construction names. TTEK ranks #3 (5.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 TTEK
Tetra Tech Inc
This page
5,709 $171,955

All Filings in TTEK

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4 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $171,955 5,709
2025-12-31 $38,772 1,156
2025-09-30 $616,561 18,471
2021-12-31 $3,396 100