테트라테크(주)
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership6,215 shares
Latest Disclosed Value $ 187,196
Strs Ohio reports 1.18% decrease in ownership of TTEK / Tetra Tech, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 6,215 shares of Tetra Tech, Inc. (US:TTEK) valued at $187,196 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 6,289 shares of Tetra Tech, Inc.. This represents a change in shares of -1.18% during the quarter. The current value of the position is $173,834 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)
2026-04-24 2026-03-31 13F TETRA TECH COM_STK 88162G103 6,215 -74 -1.18 187 -10.95 0.0007
2026-02-02 2025-12-31 13F TETRA TECH COM_STK 88162G103 6,289 11 0.18 211 0.48 0.0008
2025-10-30 2025-09-30 13F TETRA TECH COM_STK 88162G103 6,278 -105 -1.64 210 -8.73 0.0008
2025-08-04 2025-06-30 13F TETRA TECH COM_STK 88162G103 6,383 6,383 230 0.0009
2025-05-28 2025-03-31 13F TETRA TECH COM_STK 88162G103 0 -44,140 -100.00 0 -100.00
2025-05-28 2024-12-31 13F TETRA TECH COM_STK 88162G103 44,140 584 1.34 1,759 -14.41 0.0070
2024-11-01 2024-09-30 13F TETRA TECH COM_STK 88162G103 43,556 35,016 410.02 2,054 17.64 0.0079
2024-08-05 2024-06-30 13F TETRA TECH COM_STK 88162G103 8,540 -20 -0.23 1,746 174,500.00 0.0069
2024-05-13 2024-03-31 13F TETRA TECH COM_STK 88162G103 8,560 352 4.29 2 0.00 0.0063
2024-01-30 2023-12-31 13F TETRA TECH COM 88162G103 8,208 -842 -9.30 1 0.00 0.0057
2023-10-26 2023-09-30 13F/A-1 TETRA TECH COM 88162G103 9,050 2,291 33.90 1 0.00 0.0061
2023-10-26 2023-09-30 13F TETRA TECH COM 88162G103 9,050 2,291 1 0.0061
2023-07-31 2023-06-30 13F TETRA TECH COM 88162G103 6,759 -921 -11.99 1 0.00 0.0047
2023-08-02 2023-03-31 13F/A-2 TETRA TECH COM 88162G103 7,680 -1,943 -20.19 1 0.00 0.0049
2023-08-02 2023-03-31 13F/A-1 TETRA TECH COM 88162G103 7,680 1
2023-04-27 2023-03-31 13F TETRA TECH COM 88162G103 7,680 -1,943 1 0.0058
2023-01-26 2022-12-31 13F TETRA TECH COM 88162G103 9,623 9,623 1 0.0063
2022-10-27 2022-09-30 13F TETRA TECH COM 88162G103 0 -7,576 -100.00 0 -100.00
2022-07-25 2022-06-30 13F TETRA TECH COM 88162G103 7,576 -9,024 -54.36 1,034 -62.24 0.0047
2022-04-21 2022-03-31 13F TETRA TECH COM 88162G103 16,600 5,500 49.55 2,738 45.33 0.0100
2022-01-24 2021-12-31 13F TETRA TECH COM 88162G103 11,100 600 5.71 1,884 20.15 0.0065
2021-10-22 2021-09-30 13F TETRA TECH COM 88162G103 10,500 -100 -0.94 1,568 21.27 0.0059
2021-07-26 2021-06-30 13F TETRA TECH COM 88162G103 10,600 -7,500 -41.44 1,293 -47.35 0.0047
2021-04-23 2021-03-31 13F TETRA TECH COM 88162G103 18,100 8,300 84.69 2,456 116.58 0.0092
2021-01-25 2020-12-31 13F TETRA TECH COM 88162G103 9,800 900 10.11 1,134 33.57 0.0044
2020-12-14 2020-09-30 13F TETRA TECH COM 88162G103 8,900 -3,100 -25.83 849 -10.54 0.0036
2020-07-23 2020-06-30 13F TETRA TECH COM 88162G103 12,000 -6,800 -36.17 949 -28.49 0.0041
2020-04-23 2020-03-31 13F TETRA TECH COM 88162G103 18,800 -1,400 -6.93 1,327 -23.74 0.0070
2020-01-24 2019-12-31 13F TETRA TECH COM 88162G103 20,200 -300 -1.46 1,740 -2.14 0.0073
2019-10-21 2019-09-30 13F/A-1 TETRA TECH COM 88162G103 20,500 300 1.49 1,778 12.11 0.0078
2019-10-21 2019-09-30 13F TETRA TECH COM 88162G103 20,500 300 1,778 7,869.5266
2019-07-25 2019-06-30 13F TETRA TECH COM 88162G103 20,200 11,900 143.37 1,586 221.05 0.0071
2019-04-19 2019-03-31 13F TETRA TECH COM 88162G103 8,300 1,000 13.70 494 31.03 0.0022
2019-01-23 2018-12-31 13F TETRA TECH COM 88162G103 7,300 1,400 23.73 377 -6.22 0.0019
2018-10-19 2018-09-30 13F TETRA TECH COM 88162G103 5,900 1,200 25.53 402 46.72 0.0018
2018-08-06 2018-06-30 13F TETRA TECH COM 88162G103 4,700 900 23.68 274 47.31 0.0012
2018-04-20 2018-03-31 13F TETRA TECH COM 88162G103 3,800 200 5.56 186 7.51 0.0008
2018-01-23 2017-12-31 13F TETRA TECH COM 88162G103 3,600 400 12.50 173 16.89 0.0007
2017-10-23 2017-09-30 13F TETRA TECH COM 88162G103 3,200 -1,300 -28.89 148 -27.80 0.0006
2017-07-26 2017-06-30 13F TETRA TECH COM 88162G103 4,500 1,400 45.16 205 62.70 0.0009
2017-04-26 2017-03-31 13F TETRA TECH COM 88162G103 3,100 -1,200 -27.91 126 -31.89 0.0005
2017-01-24 2016-12-31 13F TETRA TECH COM 88162G103 4,300 1,600 59.26 185 94.74 0.0008
2016-10-27 2016-09-30 13F TETRA TECH COM 88162G103 2,700 1,000 58.82 95 82.69 0.0004
2016-07-26 2016-06-30 13F TETRA TECH COM 88162G103 1,700 0 0.00 52 4.00 0.0002
2016-04-25 2016-03-31 13F/A-1 TETRA TECH COM 88162G103 1,700 1,700 0.00 50 0.0002
2015-04-21 2015-03-31 13F TETRA TECH COM 88162G103 0 -200 -100.00 0 -100.00
2015-01-23 2014-12-31 13F TETRA TECH COM 88162G103 200 0 0.00 5 0.00 0.0000
2014-10-29 2014-09-30 13F/A-1 TETRA TECH COM 88162G103 200 0 0.00 5 -16.67 0.0000
2014-10-20 2014-09-30 13F TETRA TECH COM 88162G103 200 5
2014-07-24 2014-06-30 13F TETRA TECH COM 88162G103 200 -2,300 -92.00 6 -91.89 0.0000
2014-04-28 2014-03-31 13F TETRA TECH COM 88162G103 2,500 800 47.06 74 54.17 0.0003
2014-01-30 2013-12-31 13F TETRA TECH COM 88162G103 1,700 -200 -10.53 48 -2.04 0.0002
2013-10-24 2013-09-30 13F TETRA TECH COM 88162G103 1,900 -20,631 -91.57 49 -90.75 0.0002
2013-08-12 2013-06-30 13F TETRA TECH COM 88162G103 22,531 22,531 530 0.0023
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.