테트라테크(주)
MX ˙ BMV ˙ US88162G1031
SecurityMX:TTEK / Tetra Tech, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership713,767 shares
Latest Disclosed Value $ 21,498,607
Rhumbline Advisers reports 2.04% increase in ownership of TTEK / Tetra Tech, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 713,767 shares of Tetra Tech, Inc. (MX:TTEK) valued at $21,498,607 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 699,465 shares of Tetra Tech, Inc.. This represents a change in shares of 2.04% 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)
2026-05-12 2026-03-31 13F TETRA TECH INC NEW COM COM 88162G103 713,767 14,302 2.04 21,499 -8.36 0.0184
2026-02-13 2025-12-31 13F TETRA TECH INC NEW COM COM 88162G103 699,465 -21,332 -2.96 23,460 -2.50 0.0190
2025-11-06 2025-09-30 13F TETRA TECH INC NEW COM COM 88162G103 720,797 -10,337 -1.41 24,060 -8.49 0.0193
2025-08-12 2025-06-30 13F TETRA TECH INC NEW COM COM 88162G103 731,134 -13,277 -1.78 26,292 20.75 0.0225
2025-05-29 2025-03-31 13F/A-1 TETRA TECH INC NEW COM COM 88162G103 744,411 -5,911 -0.79 21,774 -27.16 0.0204
2025-04-08 2025-03-31 13F TETRA TECH INC NEW COM COM 88162G103 744,411 -5,911 21,774 0.0204
2025-05-29 2024-12-31 13F/A-1 TETRA TECH INC NEW COM COM 88162G103 750,322 -44,868 -5.64 29,893 -20.29 0.0267
2025-01-30 2024-12-31 13F TETRA TECH INC NEW COM COM 88162G103 750,322 -44,868 29,893 0.0267
2024-11-12 2024-09-30 13F TETRA TECH INC NEW COM COM 88162G103 795,190 634,948 396.24 37,501 14.45 0.0338
2024-08-01 2024-06-30 13F TETRA TECH INC NEW COM COM 88162G103 160,242 -3,218 -1.97 32,766 8.53 0.0308
2024-05-09 2024-03-31 13F TETRA TECH INC NEW COM COM 88162G103 163,460 -17,959 -9.90 30,193 -0.30 0.0290
2024-02-08 2023-12-31 13F TETRA TECH INC NEW COM COM 88162G103 181,419 -6,393 -3.40 30,284 6.07 0.0317
2023-11-09 2023-09-30 13F TETRA TECH INC NEW COM COM 88162G103 187,812 6,816 3.77 28,553 -3.66 0.0331
2023-08-08 2023-06-30 13F TETRA TECH INC NEW COM COM 88162G103 180,996 12,663 7.52 29,636 123,383.33 0.0332
2023-05-11 2023-03-31 13F TETRA TECH INC NEW COM COM 88162G103 168,333 793 0.47 25 -99.90 0.0305
2023-02-14 2022-12-31 13F TETRA TECH INC NEW COM COM 88162G103 167,540 6,237 3.87 24,325 17.33 0.0327
2022-11-10 2022-09-30 13F TETRA TECH INC NEW COM COM 88162G103 161,303 2,856 1.80 20,732 -4.18 0.0309
2022-08-11 2022-06-30 13F TETRA TECH INC NEW COM COM 88162G103 158,447 595 0.38 21,636 -16.90 0.0316
2022-05-12 2022-03-31 13F TETRA TECH INC NEW COM COM 88162G103 157,852 3,349 2.17 26,036 -0.76 0.0335
2022-02-10 2021-12-31 13F TETRA TECH INC NEW COM COM 88162G103 154,503 -184 -0.12 26,235 13.57 0.0322
2021-11-12 2021-09-30 13F TETRA TECH INC NEW COM COM 88162G103 154,687 194 0.13 23,101 22.53 0.0313
2021-08-05 2021-06-30 13F TETRA TECH INC NEW COM COM 88162G103 154,493 -2,592 -1.65 18,854 -11.57 0.0247
2021-05-06 2021-03-31 13F TETRA TECH INC NEW COM COM 88162G103 157,085 -6,341 -3.88 21,320 12.68 0.0290
2021-02-10 2020-12-31 13F TETRA TECH INC NEW COM COM 88162G103 163,426 -811 -0.49 18,921 20.63 0.0261
2020-11-12 2020-09-30 13F TETRA TECH INC NEW COM COM 88162G103 164,237 -19,043 -10.39 15,685 8.16 0.0246
2020-08-13 2020-06-30 13F TETRA TECH INC NEW COM COM 88162G103 183,280 7,623 4.34 14,501 16.90 0.0242
2020-05-06 2020-03-31 13F TETRA TECH INC NEW COM COM 88162G103 175,657 -1,822 -1.03 12,405 -18.88 0.0260
2020-02-05 2019-12-31 13F TETRA TECH INC NEW COM COM 88162G103 177,479 4,495 2.60 15,292 1.89 0.0256
2019-10-23 2019-09-30 13F TETRA TECH INC NEW COM COM 88162G103 172,984 1,654 0.97 15,008 11.52 0.0274
2019-08-14 2019-06-30 13F TETRA TECH INC NEW COM COM 88162G103 171,330 2,046 1.21 13,458 33.41 0.0253
2019-05-01 2019-03-31 13F TETRA TECH INC NEW COM COM 88162G103 169,284 1,219 0.73 10,088 15.94 0.0195
2019-01-31 2018-12-31 13F TETRA TECH INC NEW COM COM 88162G103 168,065 27,478 19.55 8,701 -9.38 0.0189
2018-11-07 2018-09-30 13F TETRA TECH INC NEW COM COM 88162G103 140,587 -3,895 -2.70 9,602 13.61 0.0185
2018-08-06 2018-06-30 13F TETRA TECH INC NEW COM COM 88162G103 144,482 3,299 2.34 8,452 22.30 0.0170
2018-05-02 2018-03-31 13F TETRA TECH INC NEW COM COM 88162G103 141,183 1,855 1.33 6,911 3.01 0.0144
2018-02-09 2017-12-31 13F TETRA TECH INC NEW COM COM 88162G103 139,328 16,849 13.76 6,709 17.68 0.0136
2017-11-06 2017-09-30 13F TETRA TECH INC NEW COM COM 88162G103 122,479 1,820 1.51 5,701 3.28 0.0124
2017-08-02 2017-06-30 13F TETRA TECH INC NEW COM COM 88162G103 120,659 -9,498 -7.30 5,520 3.82 0.0126
2017-05-02 2017-03-31 13F TETRA TECH INC NEW COM COM 88162G103 130,157 30,523 30.64 5,317 23.68 0.0124
2017-01-27 2016-12-31 13F TETRA TECH INC NEW COM COM 88162G103 99,634 -3,370 -3.27 4,299 17.65 0.0109
2016-11-08 2016-09-30 13F TETRA TECH INC NEW COM COM 88162G103 103,004 7,041 7.34 3,654 23.86 0.0101
2016-08-11 2016-06-30 13F TETRA TECH INC NEW COM COM 88162G103 95,963 -19,439 -16.84 2,950 -14.27 0.0087
2016-05-02 2016-03-31 13F TETRA TECH INC US COM 88162G103 115,402 9,145 8.61 3,441 24.45 0.0107
2016-02-03 2015-12-31 13F TETRA TECH INC US COM 88162G103 106,257 4,315 4.23 2,765 11.58 0.0089
2015-11-04 2015-09-30 13F TETRA TECH INC US COM 88162G103 101,942 4,632 4.76 2,478 -0.68 0.0084
2015-08-04 2015-06-30 13F TETRA TECH INC US COM 88162G103 97,310 -5,220 -5.09 2,495 1.30 0.0080
2015-05-12 2015-03-31 13F TETRA TECH INC US COM 88162G103 102,530 -50 -0.05 2,463 -10.08 0.0071
2015-02-06 2014-12-31 13F TETRA TECH INC US COM 88162G103 102,580 337 0.33 2,739 7.24 0.0080
2014-11-12 2014-09-30 13F TETRA TECH INC US COM 88162G103 102,243 130 0.13 2,554 -9.05 0.0077
2014-08-06 2014-06-30 13F TETRA TECH INC US COM 88162G103 102,113 -1,692 -1.63 2,808 -8.59 0.0082
2014-05-06 2014-03-31 13F TETRA TECH INC US COM 88162G103 103,805 -2,762 -2.59 3,072 3.02 0.0091
2014-02-03 2013-12-31 13F TETRA TECH INC US COM 88162G103 106,567 -5,440 -4.86 2,982 2.83 0.0088
2013-11-05 2013-09-30 13F TETRA TECH INC US COM 88162G103 112,007 -2,587 -2.26 2,900 7.65 0.0090
2013-08-07 2013-06-30 13F TETRA TECH INC US COM 88162G103 114,594 114,594 2,694 0.0087
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.