Tetra Tech, Inc.
MX ˙ BMV ˙ US88162G1031
SecurityMX:TTEK / Tetra Tech, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership70,995 shares
Latest Disclosed Value $ 2,138,369
Trexquant Investment LP reports 31.82% decrease in ownership of TTEK / Tetra Tech, Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 70,995 shares of Tetra Tech, Inc. (MX:TTEK) valued at $2,138,369 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 104,131 shares of Tetra Tech, Inc.. This represents a change in shares of -31.82% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F TETRA TECH INC COM 88162G103 70,995 -33,136 -31.82 2,138 -38.77 0.0154
2026-02-17 2025-12-31 13F TETRA TECH INC COM 88162G103 104,131 -238,026 -69.57 3,493 -69.42 0.0311
2025-11-14 2025-09-30 13F TETRA TECH INC COM 88162G103 342,157 342,157 11,421 0.1176
2025-05-14 2025-03-31 13F TETRA TECH INC COM 88162G103 0 -279,406 -100.00 0 -100.00
2025-02-12 2024-12-31 13F TETRA TECH INC COM 88162G103 279,406 145,736 109.03 11,132 76.60 0.1297
2024-11-12 2024-09-30 13F TETRA TECH INC COM 88162G103 133,670 111,150 493.56 6,304 36.90 0.0798
2024-08-13 2024-06-30 13F TETRA TECH INC COM 88162G103 22,520 17,546 352.75 4,605 401.53 0.0702
2024-05-14 2024-03-31 13F TETRA TECH INC COM 88162G103 4,974 -19,368 -79.57 919 -77.41 0.0183
2024-02-09 2023-12-31 13F TETRA TECH INC COM 88162G103 24,342 -1,454 -5.64 4,063 3.62 0.0914
2023-11-13 2023-09-30 13F TETRA TECH INC COM 88162G103 25,796 25,796 3,922 0.0984
2023-05-15 2023-03-31 13F TETRA TECH INC COM 88162G103 0 -12,577 -100.00 0 -100.00
2023-02-13 2022-12-31 13F TETRA TECH INC COM 88162G103 12,577 -7,798 -38.27 1,826 -30.28 0.0518
2022-11-14 2022-09-30 13F TETRA TECH INC COM 88162G103 20,375 16,431 416.61 2,619 385.90 0.0921
2022-08-11 2022-06-30 13F TETRA TECH INC COM 88162G103 3,944 3,944 539 0.0242
2022-05-13 2022-03-31 13F TETRA TECH INC COM 88162G103 0 -5,942 -100.00 0 -100.00
2022-02-14 2021-12-31 13F TETRA TECH INC COM 88162G103 5,942 5,942 1,009 0.0623
2021-05-13 2021-03-31 13F TETRA TECH INC COM 88162G103 0 -4,506 -100.00 0 -100.00
2021-02-11 2020-12-31 13F TETRA TECH INC COM 88162G103 4,506 1,930 74.92 522 112.20 0.0553
2020-11-06 2020-09-30 13F TETRA TECH INC COM 88162G103 2,576 2,576 246 0.0158
2019-08-09 2019-06-30 13F TETRA TECH INC COM 88162G103 0 -21,152 -100.00 0 -100.00
2019-05-13 2019-03-31 13F TETRA TECH INC COM 88162G103 21,152 11,007 108.50 1,260 140.00 0.0895
2019-02-13 2018-12-31 13F TETRA TECH INC COM 88162G103 10,145 10,145 525 0.0328
2018-05-03 2018-03-31 13F TETRA TECH INC COM 88162G103 0 -6,878 -100.00 0 -100.00
2018-02-08 2017-12-31 13F TETRA TECH INC COM 88162G103 6,878 6,878 331 0.0363
2017-05-08 2017-03-31 13F TETRA TECH INC COM 88162G103 0 -20,096 -100.00 0 -100.00
2017-02-10 2016-12-31 13F TETRA TECH INC COM 88162G103 20,096 20,096 867 0.1371
2015-05-13 2015-03-31 13F TETRA TECH INC COM 88162G103 0 -9,077 -100.00 0 -100.00
2015-02-13 2014-12-31 13F TETRA TECH INC COM 88162G103 9,077 9,077 242 0.0428
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.