利樂科技公司
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership646,671 shares
Latest Disclosed Value $ 19,477,731
UBS Group AG reports 2.86% decrease in ownership of TTEK / Tetra Tech, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 646,671 shares of Tetra Tech, Inc. (US:TTEK) valued at $19,477,731 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 665,738 shares of Tetra Tech, Inc.. This represents a change in shares of -2.86% during the quarter. The current value of the position is $18,087,388 USD.

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 646,671 -19,067 -2.86 19,478 -12.77 0.0005
2026-01-29 2025-12-31 13F TETRA TECH INC COM 88162G103 665,738 -524,375 -44.06 22,329 -43.79 0.0036
2025-11-13 2025-09-30 13F TETRA TECH INC COM 88162G103 1,190,113 164,756 16.07 39,726 7.74 0.0062
2025-08-14 2025-06-30 13F TETRA TECH INC COM 88162G103 1,025,357 -53,151 -4.93 36,872 16.88 0.0064
2025-05-13 2025-03-31 13F TETRA TECH INC COM 88162G103 1,078,508 443,305 69.79 31,546 24.66 0.0058
2025-02-14 2024-12-31 13F TETRA TECH INC COM 88162G103 635,203 265,212 71.68 25,306 45.04 0.0047
2024-11-14 2024-09-30 13F TETRA TECH INC COM 88162G103 369,991 292,646 378.36 17,449 10.33 0.0038
2024-08-14 2024-06-30 13F TETRA TECH INC COM 88162G103 77,345 9,810 14.53 15,816 26.78 0.0039
2024-05-13 2024-03-31 13F TETRA TECH INC COM 88162G103 67,535 30,854 84.11 12,474 103.72 0.0031
2024-02-09 2023-12-31 13F TETRA TECH INC COM 88162G103 36,681 3,600 10.88 6,123 21.75 0.0018
2023-11-09 2023-09-30 13F TETRA TECH INC COM 88162G103 33,081 -1,188 -3.47 5,029 -10.37 0.0017
2023-08-11 2023-06-30 13F TETRA TECH INC COM 88162G103 34,269 -2,175 -5.97 5,611 4.82 0.0019
2023-05-12 2023-03-31 13F TETRA TECH INC COM 88162G103 36,444 742 2.08 5,354 3.28 0.0020
2023-02-08 2022-12-31 13F TETRA TECH INC COM 88162G103 35,702 6,095 20.59 5,184 36.18 0.0019
2022-11-10 2022-09-30 13F TETRA TECH INC COM 88162G103 29,607 -23,637 -44.39 3,806 -47.66 0.0017
2022-08-10 2022-06-30 13F TETRA TECH INC COM 88162G103 53,244 21,730 68.95 7,271 39.91 0.0030
2022-05-16 2022-03-31 13F TETRA TECH INC COM 88162G103 31,514 -30,644 -49.30 5,197 -50.76 0.0017
2022-02-14 2021-12-31 13F TETRA TECH INC COM 88162G103 62,158 30,031 93.48 10,554 120.01 0.0030
2021-11-15 2021-09-30 13F TETRA TECH INC COM 88162G103 32,127 -263 -0.81 4,797 21.35 0.0015
2021-08-13 2021-06-30 13F TETRA TECH INC COM 88162G103 32,390 -21,699 -40.12 3,953 -46.15 0.0013
2021-05-12 2021-03-31 13F TETRA TECH INC COM 88162G103 54,089 17,839 49.21 7,341 74.91 0.0024
2021-02-11 2020-12-31 13F TETRA TECH INC COM 88162G103 36,250 -7,775 -17.66 4,197 -0.17 0.0014
2020-11-12 2020-09-30 13F TETRA TECH INC COM 88162G103 44,025 13,334 43.45 4,204 73.15 0.0016
2020-07-31 2020-06-30 13F TETRA TECH INC COM 88162G103 30,691 -26,705 -46.53 2,428 -40.09 0.0010
2020-05-01 2020-03-31 13F TETRA TECH INC COM 88162G103 57,396 -95,503 -62.46 4,053 -69.23 0.0019
2020-02-14 2019-12-31 13F TETRA TECH INC COM 88162G103 152,899 68,275 80.68 13,173 79.42 0.0046
2019-11-14 2019-09-30 13F TETRA TECH INC COM 88162G103 84,624 6,818 8.76 7,342 20.12 0.0028
2019-08-14 2019-06-30 13F TETRA TECH INC COM 88162G103 77,806 26,978 53.08 6,112 101.78 0.0024
2019-05-14 2019-03-31 13F TETRA TECH INC COM 88162G103 50,828 -28,721 -36.10 3,029 -26.44 0.0013
2019-02-14 2018-12-31 13F TETRA TECH INC COM 88162G103 79,549 7,704 10.72 4,118 -16.08 0.0019
2018-11-14 2018-09-30 13F TETRA TECH INC COM 88162G103 71,845 5,447 8.20 4,907 26.31 0.0019
2018-08-14 2018-06-30 13F TETRA TECH INC COM 88162G103 66,398 13,898 26.47 3,885 51.17 0.0017
2018-05-15 2018-03-31 13F TETRA TECH INC COM 88162G103 52,500 -9,185 -14.89 2,570 -13.47 0.0011
2018-02-14 2017-12-31 13F TETRA TECH INC COM 88162G103 61,685 5,273 9.35 2,970 13.10 0.0012
2017-11-14 2017-09-30 13F TETRA TECH INC COM 88162G103 56,412 -11,337 -16.73 2,626 -15.29 0.0012
2017-11-14 2017-06-30 13F/A-1 TETRA TECH INC COM 88162G103 67,749 -171,473 -71.68 3,100 -68.28 0.0016
2017-08-14 2017-06-30 13F TETRA TECH INC COM 88162G103 67,749 -171,473 3,100
2017-11-14 2017-03-31 13F/A-1 TETRA TECH INC COM 88162G103 239,222 1,729 0.73 9,772 -4.64 0.0053
2017-05-12 2017-03-31 13F TETRA TECH INC COM 88162G103 239,222 1,729 9,772
2017-02-14 2016-12-31 13F TETRA TECH INC COM 88162G103 237,493 45,834 23.91 10,248 50.75 0.0057
2016-11-14 2016-09-30 13F TETRA TECH INC COM 88162G103 191,659 -73,094 -27.61 6,798 -16.49 0.0041
2016-08-12 2016-06-30 13F TETRA TECH INC COM 88162G103 264,753 -4,182 -1.56 8,140 1.50 0.0051
2016-05-12 2016-03-31 13F TETRA TECH INC COM 88162G103 268,935 2,603 0.98 8,020 15.71 0.0054
2016-02-16 2015-12-31 13F TETRA TECH INC COM 88162G103 266,332 22,068 9.03 6,931 16.70 0.0045
2015-11-13 2015-09-30 13F TETRA TECH INC COM 88162G103 244,264 -7,519 -2.99 5,939 -8.01 0.0042
2015-08-14 2015-06-30 13F TETRA TECH INC COM 88162G103 251,783 190,088 308.11 6,456 335.92 0.0043
2015-05-14 2015-03-31 13F TETRA TECH INC COM 88162G103 61,695 1,734 2.89 1,481 -7.50 0.0010
2015-02-17 2014-12-31 13F TETRA TECH INC COM 88162G103 59,961 59,961 1,601 0.0011
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.