Tetra Tech, Inc.
MX ˙ BMV ˙ US88162G1031
SecurityMX:TTEK / Tetra Tech, Inc.
InstitutionHighTower Advisors, LLC
Latest Disclosed Ownership72,484 shares
Latest Disclosed Value $ 2,183,202
HighTower Advisors, LLC reports 3.82% decrease in ownership of TTEK / Tetra Tech, Inc.

On May 5, 2026 - HighTower Advisors, LLC filed a 13F-HR form disclosing ownership of 72,484 shares of Tetra Tech, Inc. (MX:TTEK) valued at $2,183,202 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 75,366 shares of Tetra Tech, Inc.. This represents a change in shares of -3.82% 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)
2026-05-05 2026-03-31 13F TETRA TECH INC COM 88162G103 72,484 -2,882 -3.82 2,183 -13.61 0.0023
2026-02-06 2025-12-31 13F TETRA TECH INC COM 88162G103 75,366 -11,469 -13.21 2,528 -12.80 0.0028
2025-11-07 2025-09-30 13F TETRA TECH INC COM 88162G103 86,835 -2,497 -2.80 2,899 -9.78 0.0033
2025-08-11 2025-06-30 13F TETRA TECH INC COM 88162G103 89,332 -21,494 -19.39 3,212 -0.89 0.0040
2025-05-13 2025-03-31 13F TETRA TECH INC COM 88162G103 110,826 -31,239 -21.99 3,242 -42.73 0.0044
2025-02-07 2024-12-31 13F TETRA TECH INC COM 88162G103 142,065 17,658 14.19 5,660 -3.81 0.0077
2024-11-14 2024-09-30 13F TETRA TECH INC COM 88162G103 124,407 101,208 436.26 5,883 24.98 0.0084
2024-08-13 2024-06-30 13F TETRA TECH INC COM 88162G103 23,199 -5,306 -18.61 4,707 -11.14 0.0073
2024-05-06 2024-03-31 13F TETRA TECH INC COM 88162G103 28,505 -9,288 -24.58 5,297 -16.74 0.0086
2024-02-12 2023-12-31 13F TETRA TECH INC COM 88162G103 37,793 21 0.06 6,362 10.82 0.0107
2023-11-08 2023-09-30 13F TETRA TECH INC COM 88162G103 37,772 -3,681 -8.88 5,741 -15.31 0.0108
2023-08-14 2023-06-30 13F TETRA TECH INC COM 88162G103 41,453 -7,880 -15.97 6,779 -6.28 0.0133
2023-05-12 2023-03-31 13F TETRA TECH INC COM 88162G103 49,333 13,486 37.62 7,233 38.78 0.0158
2023-02-09 2022-12-31 13F TETRA TECH INC COM 88162G103 35,847 -5,475 -13.25 5,212 -2.32 0.0119
2022-11-09 2022-09-30 13F TETRA TECH INC COM 88162G103 41,322 -18,944 -31.43 5,336 -35.38 0.0143
2022-08-10 2022-06-30 13F TETRA TECH INC COM 88162G103 60,266 -8,203 -11.98 8,257 -26.77 0.0213
2022-05-12 2022-03-31 13F TETRA TECH INC COM 88162G103 68,469 -2,051 -2.91 11,275 -5.71 0.0251
2022-02-10 2021-12-31 13F TETRA TECH INC COM 88162G103 70,520 -16,304 -18.78 11,958 -7.67 0.0262
2021-11-12 2021-09-30 13F TETRA TECH INC COM 88162G103 86,824 19,985 29.90 12,951 58.42 0.0347
2021-08-06 2021-06-30 13F TETRA TECH INC COM 88162G103 66,839 32,794 96.33 8,175 78.07 0.0237
2021-05-10 2021-03-31 13F TETRA TECH INC COM 88162G103 34,045 -9,203 -21.28 4,591 -8.01 0.0145
2021-02-10 2020-12-31 13F TETRA TECH INC COM 88162G103 43,248 -11,161 -20.51 4,991 -4.02 0.0208
2020-11-13 2020-09-30 13F TETRA TECH INC COM 88162G103 54,409 10,668 24.39 5,200 49.55 0.0251
2020-08-10 2020-06-30 13F TETRA TECH INC COM 88162G103 43,741 22,557 106.48 3,477 133.83 0.0190
2020-05-21 2020-03-31 13F TETRA TECH INC COM 88162G103 21,184 18,218 614.23 1,487 485.43 0.0096
2020-02-14 2019-12-31 13F TETRA TECH INC COM 88162G103 2,966 -1,260 -29.82 254 -30.79 0.0015
2019-11-12 2019-09-30 13F TETRA TECH INC COM 88162G103 4,226 -48,210 -91.94 367 -91.12 0.0020
2019-08-13 2019-06-30 13F TETRA TECH INC COM 88162G103 52,436 -1,627 -3.01 4,131 27.58 0.0246
2019-05-15 2019-03-31 13F TETRA TECH INC COM 88162G103 54,063 2,059 3.96 3,238 20.33 0.0216
2019-02-14 2018-12-31 13F TETRA TECH INC COM 88162G103 52,004 -5,156 -9.02 2,691 -31.05 0.0206
2018-11-09 2018-09-30 13F TETRA TECH INC COM 88162G103 57,160 6,619 13.10 3,903 31.24 0.0281
2018-08-14 2018-06-30 13F TETRA TECH INC COM 88162G103 50,541 -1,780 -3.40 2,974 16.13 0.0233
2018-05-15 2018-03-31 13F TETRA TECH INC COM 88162G103 52,321 2,701 5.44 2,561 6.98 0.0215
2018-02-14 2017-12-31 13F TETRA TECH INC COM 88162G103 49,620 -1,252 -2.46 2,394 1.96 0.0197
2017-11-14 2017-09-30 13F TETRA TECH INC COM 88162G103 50,872 -3,998 -7.29 2,348 -6.64 0.0200
2017-09-22 2017-06-30 13F/A-1 TETRA TECH INC COM 88162G103 54,870 2,074 3.93 2,515 18.35 0.0225
2017-08-14 2017-06-30 13F TETRA TECH INC COM 88162G103 54,870 2,074 2,515
2017-05-15 2017-03-31 13F TETRA TECH INC COM 88162G103 52,796 47,555 907.37 2,125 832.02 0.0203
2017-02-10 2016-12-31 13F TETRA TECH INC COM 88162G103 5,241 -716 -12.02 228 8.57 0.0025
2016-11-14 2016-09-30 13F TETRA TECH INC COM 88162G103 5,957 5,957 210 0.0024
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.