Tetra Tech, Inc.
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionTocqueville Asset Management L.p.
Latest Disclosed Ownership15,025 shares
Latest Disclosed Value $ 452,553
Tocqueville Asset Management L.p. ownership in TTEK / Tetra Tech, Inc.

On May 12, 2026 - Tocqueville Asset Management L.p. filed a 13F-HR form disclosing ownership of 15,025 shares of Tetra Tech, Inc. (US:TTEK) valued at $452,553 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 15,025 shares of Tetra Tech, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $419,198 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)
2026-05-12 2026-03-31 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 453 -10.14 0.0067
2026-02-12 2025-12-31 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 504 0.40 0.0074
2025-11-13 2025-09-30 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 502 -7.22 0.0073
2025-08-12 2025-06-30 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 540 23.01 0.0082
2025-05-13 2025-03-31 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 439 -26.59 0.0072
2025-02-10 2024-12-31 13F TETRA TECH INC COM 88162G103 15,025 0 0.00 599 -15.54 0.0094
2024-11-08 2024-09-30 13F TETRA TECH INC COM 88162G103 15,025 12,020 400.00 709 15.31 0.0111
2024-08-12 2024-06-30 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 614 10.63 0.0101
2024-05-09 2024-03-31 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 555 10.78 0.0091
2024-02-12 2023-12-31 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 502 9.87 0.0091
2023-11-09 2023-09-30 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 457 -7.32 0.0087
2023-08-11 2023-06-30 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 492 11.56 0.0088
2023-05-10 2023-03-31 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 441 1.15 0.0083
2023-02-09 2022-12-31 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 436 12.95 0.0083
2022-11-10 2022-09-30 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 386 -5.85 0.0079
2022-08-12 2022-06-30 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 410 -17.34 0.0075
2022-05-16 2022-03-31 13F Tetra Tech COM 88162G103 3,005 0 0.00 496 -2.75 0.0075
2022-02-14 2021-12-31 13F TETRA TECH INC COM 88162G103 3,005 0 0.00 510 13.59 0.0070
2021-11-15 2021-09-30 13F TETRA TECH INC COM 88162G103 3,005 -220 -6.82 449 13.96 0.0067
2021-08-16 2021-06-30 13F TETRA TECH INC COM 88162G103 3,225 0 0.00 394 -10.05 0.0057
2021-05-17 2021-03-31 13F TETRA TECH INC COM 88162G103 3,225 -107 -3.21 438 13.47 0.0067
2021-02-16 2020-12-31 13F TETRA TECH INC COM 88162G103 3,332 -224 -6.30 386 13.53 0.0064
2020-11-16 2020-09-30 13F TETRA TECH COM 88162G103 3,556 -314 -8.11 340 11.11 0.0065
2020-08-12 2020-06-30 13F TETRA TECH INC COM 88162G103 3,870 -117 -2.93 306 8.51 0.0064
2020-05-15 2020-03-31 13F TETRA TECH INC COM 88162G103 3,987 -47 -1.17 282 -18.97 0.0070
2020-01-14 2019-12-31 13F Tetra Tech COM 88162G103 4,034 84 2.13 348 1.46 0.0051
2019-10-31 2019-09-30 13F Tetra Tech COM 88162G103 3,950 450 12.86 343 24.73 0.0047
2019-07-31 2019-06-30 13F Tetra Tech COM 88162G103 3,500 0 0.00 275 31.58 0.0036
2019-04-30 2019-03-31 13F Tetra Tech COM 88162G103 3,500 3,500 209 0.0028
2019-02-08 2018-12-31 13F Tetra Tech COM 88162G103 0 -3,500 -100.00 0 -100.00
2018-11-13 2018-09-30 13F Tetra Tech COM 88162G103 3,500 0 0.00 239 16.59 0.0030
2018-08-13 2018-06-30 13F Tetra Tech COM 88162G103 3,500 3,500 205 0.0026
2018-02-13 2017-12-31 13F Tetra Tech COM 88162G103 0 -4,500 -100.00 0 -100.00
2017-10-30 2017-09-30 13F Tetra Tech COM 88162G103 4,500 0 0.00 209 1.46 0.0024
2017-08-04 2017-06-30 13F Tetra Tech COM 88162G103 4,500 4,500 206 0.0025
2017-04-28 2017-03-31 13F Tetra Tech COM 88162G103 0 -6,900 -100.00 0 -100.00
2017-01-30 2016-12-31 13F Tetra Tech COM 88162G103 6,900 1,075 18.45 298 43.96 0.0038
2016-10-31 2016-09-30 13F Tetra Tech COM 88162G103 5,825 5,825 0.00 207 0.0025
2015-01-30 2014-12-31 13F Tetra Tech COM 88162G103 0 -26,500 -100.00 0 -100.00
2014-10-30 2014-09-30 13F Tetra Tech COM 88162G103 26,500 25,000 1,666.67 662 1,514.63 0.0073
2014-09-18 2014-06-30 13F/A-1 Tetra Tech COM 88162G103 1,500 0 0.00 41 -6.82 0.0004
2014-07-30 2014-06-30 13F Tetra Tech COM 88162G103 1,500 41
2014-04-30 2014-03-31 13F Tetra Tech COM 88162G103 1,500 -22,829 -93.83 44 -93.54 0.0006
2014-01-30 2013-12-31 13F Tetra Tech COM 88162G103 24,329 -92,221 -79.13 681 -77.43 0.0092
2013-10-30 2013-09-30 13F Tetra Tech COM 88162G103 116,550 -80,700 -40.91 3,017 -34.94 0.0376
2013-07-30 2013-06-30 13F Tetra Tech COM 88162G103 197,250 197,250 4,637 0.0628
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.