Tetra Tech, Inc.
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionCresset Asset Management, LLC
Latest Disclosed Ownership8,716 shares
Latest Disclosed Value $ 262,526
Cresset Asset Management, LLC reports 17.82% increase in ownership of TTEK / Tetra Tech, Inc.

On May 15, 2026 - Cresset Asset Management, LLC filed a 13F-HR form disclosing ownership of 8,716 shares of Tetra Tech, Inc. (US:TTEK) valued at $262,526 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,398 shares of Tetra Tech, Inc.. This represents a change in shares of 17.82% during the quarter. The current value of the position is $243,176 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)
2026-05-15 2026-03-31 13F TETRA TECH INC COM 88162G103 8,716 1,318 17.82 263 5.65 0.0011
2026-02-17 2025-12-31 13F TETRA TECH INC COM 88162G103 7,398 -1,692 -18.61 248 -18.15 0.0010
2026-01-22 2025-09-30 13F/A-1 TETRA TECH INC COM 88162G103 9,090 1,929 26.94 303 17.90 0.0013
2025-11-12 2025-09-30 13F TETRA TECH INC COM 88162G103 18,686 11,525 624 0.0023
2026-01-22 2025-06-30 13F/A-1 TETRA TECH INC COM 88162G103 7,161 7,161 258 0.0013
2025-08-13 2025-06-30 13F TETRA TECH INC COM 88162G103 13,647 13,647 491 0.0021
2025-05-13 2025-03-31 13F TETRA TECH INC COM 88162G103 0 -7,745 -100.00 0 -100.00
2025-02-14 2024-12-31 13F TETRA TECH INC COM 88162G103 7,745 -28,423 -78.59 309 -81.94 0.0015
2024-11-14 2024-09-30 13F TETRA TECH INC COM 88162G103 36,168 31,290 641.45 1,706 71.01 0.0066
2024-08-14 2024-06-30 13F TETRA TECH INC COM 88162G103 4,878 919 23.21 997 36.39 0.0042
2024-05-15 2024-03-31 13F TETRA TECH INC COM 88162G103 3,959 172 4.54 731 15.66 0.0035
2024-02-14 2023-12-31 13F TETRA TECH INC COM 88162G103 3,787 354 10.31 632 21.31 0.0038
2023-11-14 2023-09-30 13F TETRA TECH INC COM 88162G103 3,433 -276 -7.44 522 -14.17 0.0020
2023-08-14 2023-06-30 13F TETRA TECH INC COM 88162G103 3,709 3,709 607 0.0008
2023-05-12 2023-03-31 13F TETRA TECH INC COM 88162G103 0 -3,427 -100.00 0 -100.00
2023-02-14 2022-12-31 13F TETRA TECH INC COM 88162G103 3,427 -166 -4.62 498 7.58 0.0063
2022-11-14 2022-09-30 13F TETRA TECH INC COM 88162G103 3,593 0 0.00 462 -5.91 0.0058
2022-08-15 2022-06-30 13F TETRA TECH INC COM 88162G103 3,593 -119 -3.21 491 -19.77 0.0060
2022-05-16 2022-03-31 13F TETRA TECH INC COM 88162G103 3,712 3,712 612 0.0064
2022-02-10 2021-12-31 13F TETRA TECH INC COM 88162G103 0 -2,343 -100.00 0 -100.00
2021-11-15 2021-09-30 13F TETRA TECH INC COM 88162G103 2,343 -239 -9.26 350 11.11 0.0047
2021-08-10 2021-06-30 13F TETRA TECH INC COM 88162G103 2,582 611 31.00 315 17.98 0.0045
2021-05-12 2021-03-31 13F TETRA TECH INC COM 88162G103 1,971 -53 -2.62 267 14.10 0.0042
2021-02-11 2020-12-31 13F TETRA TECH INC COM 88162G103 2,024 -1,636 -44.70 234 -32.95 0.0038
2020-11-13 2020-09-30 13F TETRA TECH INC COM 88162G103 3,660 45 1.24 349 22.03 0.0065
2020-08-04 2020-06-30 13F TETRA TECH INC COM 88162G103 3,615 -3,588 -49.81 286 -43.81 0.0063
2020-05-15 2020-03-31 13F TETRA TECH INC COM 88162G103 7,203 463 6.87 509 -12.39 0.0155
2020-02-10 2019-12-31 13F TETRA TECH INC COM 88162G103 6,740 203 3.11 581 2.47 0.0157
2019-11-13 2019-09-30 13F TETRA TECH INC COM 88162G103 6,537 3,348 104.99 567 125.90 0.0173
2019-08-20 2019-06-30 13F/A-1 TETRA TECH INC COM 88162G103 3,189 2,129 200.85 251 298.41 0.0078
2019-08-12 2019-06-30 13F TETRA TECH INC COM 88162G103 3,189 2,129 251
2019-05-15 2019-03-31 13F TETRA TECH INC COM 88162G103 1,060 921 662.59 63 800.00 0.0024
2019-05-21 2018-12-31 13F/A-1 TETRA TECH INC COM 88162G103 139 139 7 0.0004
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.