테트라테크(주)
MX ˙ BMV ˙ US88162G1031
SecurityMX:TTEK / Tetra Tech, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership21,983 shares
Latest Disclosed Value $ 662,127
M&t Bank Corp reports 6.10% decrease in ownership of TTEK / Tetra Tech, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 21,983 shares of Tetra Tech, Inc. (MX:TTEK) valued at $662,127 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 23,411 shares of Tetra Tech, Inc.. This represents a change in shares of -6.10% 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)
2026-05-12 2026-03-31 13F TETRA TECH INC COM 88162G103 21,983 -1,428 -6.10 662 -15.67 0.0005
2026-01-30 2025-12-31 13F/A-1 TETRA TECH INC COM 88162G103 23,411 3,423 17.13 786 17.69 0.0025
2026-01-28 2025-12-31 13F TETRA TECH INC COM 88162G103 41,734 21,746 3,765 0.0022
2025-11-14 2025-09-30 13F TETRA TECH INC COM 88162G103 19,988 -20,190 -50.25 668 -53.84 0.0022
2025-08-13 2025-06-30 13F TETRA TECH INC COM 88162G103 40,178 966 2.46 1,445 25.98 0.0050
2025-04-30 2025-03-31 13F TETRA TECH INC COM 88162G103 39,212 16,093 69.61 1,147 24.54 0.0042
2025-02-06 2024-12-31 13F TETRA TECH INC COM 88162G103 23,119 799 3.58 921 -12.45 0.0031
2024-11-19 2024-09-30 13F/A-1 TETRA TECH INC COM 88162G103 22,320 17,811 395.01 1,053 14.22 0.0035
2024-11-15 2024-09-30 13F TETRA TECH INC COM 88162G103 22,320 17,811 1,053 0.0006
2024-07-31 2024-06-30 13F TETRA TECH INC COM 88162G103 4,509 317 7.56 922 19.15 0.0031
2024-05-07 2024-03-31 13F TETRA TECH INC COM 88162G103 4,192 56 1.35 774 12.03 0.0027
2024-02-06 2023-12-31 13F TETRA TECH INC COM 88162G103 4,136 -65 -1.55 690 7.98 0.0025
2023-11-02 2023-09-30 13F TETRA TECH INC COM 88162G103 4,201 25 0.60 639 -6.44 0.0025
2023-08-09 2023-06-30 13F TETRA TECH INC COM 88162G103 4,176 23 0.55 684 11.97 0.0026
2023-05-11 2023-03-31 13F TETRA TECH INC COM 88162G103 4,153 232 5.92 610 7.21 0.0024
2023-02-13 2022-12-31 13F/A-1 TETRA TECH INC COM 88162G103 3,921 3,921 569 0.0023
2023-02-13 2022-12-31 13F TESLA COM 88162G103 1,470 1,470 211 0.0008
2022-05-09 2022-03-31 13F TETRA TECH INC COM 88162G103 0 -2,603 -100.00 0 -100.00
2022-02-07 2021-12-31 13F TETRA TECH INC COM 88162G103 2,603 0 0.00 442 13.62 0.0019
2021-10-28 2021-09-30 13F TETRA TECH INC COM 88162G103 2,603 -200 -7.14 389 13.74 0.0018
2021-08-13 2021-06-30 13F TETRA TECH INC COM 88162G103 2,803 103 3.81 342 -6.56 0.0015
2021-05-06 2021-03-31 13F TETRA TECH INC COM 88162G103 2,700 -127 -4.49 366 11.93 0.0016
2021-02-12 2020-12-31 13F TETRA TECH INC COM 88162G103 2,827 3 0.11 327 21.11 0.0014
2020-11-06 2020-09-30 13F TETRA TECH INC COM 88162G103 2,824 -4 -0.14 270 20.54 0.0013
2020-07-29 2020-06-30 13F TETRA TECH INC COM 88162G103 2,828 -232 -7.58 224 3.70 0.0012
2020-05-14 2020-03-31 13F TETRA TECH INC COM 88162G103 3,060 -30 -0.97 216 -18.80 0.0013
2020-02-07 2019-12-31 13F TETRA TECH INC COM 88162G103 3,090 -600 -16.26 266 -16.87 0.0012
2019-11-12 2019-09-30 13F TETRA TECH INC COM 88162G103 3,690 -380 -9.34 320 0.00 0.0016
2019-08-12 2019-06-30 13F TETRA TECH INC COM 88162G103 4,070 -307 -7.01 320 22.61 0.0017
2019-05-15 2019-03-31 13F TETRA TECH INC COM 88162G103 4,377 42 0.97 261 16.00 0.0014
2019-02-01 2018-12-31 13F TETRA TECH INC COM 88162G103 4,335 -835 -16.15 225 -36.26 0.0013
2018-11-09 2018-09-30 13F TETRA TECH INC COM 88162G103 5,170 -3,607 -41.10 353 -31.19 0.0018
2018-08-10 2018-06-30 13F TETRA TECH INC COM 88162G103 8,777 -1,013 -10.35 513 7.10 0.0028
2018-05-04 2018-03-31 13F TETRA TECH INC COM 88162G103 9,790 -253 -2.52 479 -0.83 0.0026
2018-02-06 2017-12-31 13F TETRA TECH INC COM 88162G103 10,043 -4 -0.04 483 3.21 0.0025
2017-11-13 2017-09-30 13F TETRA TECH INC COM 88162G103 10,047 691 7.39 468 9.35 0.0025
2017-08-11 2017-06-30 13F TETRA TECH INC COM 88162G103 9,356 2,975 46.62 428 63.98 0.0025
2017-05-10 2017-03-31 13F TETRA TECH INC COM 88162G103 6,381 -447 -6.55 261 -11.22 0.0016
2017-02-14 2016-12-31 13F TETRA TECH INC COM 88162G103 6,828 -21,687 -76.05 294 -70.92 0.0018
2016-11-04 2016-09-30 13F TETRA TECH INC COM 88162G103 28,515 -10,590 -27.08 1,011 -15.89 0.0064
2016-08-04 2016-06-30 13F TETRA TECH INC COM 88162G103 39,105 -4,717 -10.76 1,202 -8.03 0.0081
2016-05-11 2016-03-31 13F TETRA TECH INC COM 88162G103 43,822 -497 -1.12 1,307 13.36 0.0088
2016-02-12 2015-12-31 13F TETRA TECH INC COM 88162G103 44,319 1,746 4.10 1,153 11.51 0.0077
2015-11-13 2015-09-30 13F TETRA TECH INC COM 88162G103 42,573 -2,055 -4.60 1,034 -9.62 0.0070
2015-08-14 2015-06-30 13F TETRA TECH INC COM 88162G103 44,628 -1,177 -2.57 1,144 3.91 0.0069
2015-05-14 2015-03-31 13F TETRA TECH INC COM 88162G103 45,805 5,520 13.70 1,101 2.32 0.0069
2015-02-12 2014-12-31 13F TETRA TECH INC COM 88162G103 40,285 34,874 644.50 1,076 697.04 0.0067
2014-11-14 2014-09-30 13F TETRA TECH INC COM 88162G103 5,411 5,411 135 0.0009
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.