Tetra Tech, Inc.
IT ˙ BIT ˙ US88162G1031
24,22 € ↑0,95 (4,08%)
2026-06-05
AKTIENPREIS
SecurityIT:1TTEK / Tetra Tech, Inc.
InstitutionNorges Bank
Latest Disclosed Ownership1,645,776 shares
Ownership 4.76%
Norges Bank ownership in 1TTEK / Tetra Tech, Inc.

2017-04-27 - Norges Bank has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,645,776 shares of Tetra Tech, Inc. (IT:1TTEK). This represents 4.76 percent ownership of the company. In their previous filing dated 2017-02-23 , Norges Bank had reported owning 1,925,123 shares, indicating a decrease of -14.51 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2017-04-27 2017-04-27 13G/A 1,925,123 1,645,776 -14.51 4.76 -14.54
2017-02-23 2017-02-23 13G/A 2,167,760 1,925,123 -11.19 5.57 -11.16
2016-02-11 2016-02-11 13G/A 1,761,850 2,167,760 23.04 6.27 23.18
2015-08-12 2015-08-12 13G/A 2,946,426 4.89
2015-02-09 2015-02-09 13G 3,111,518 5.05

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-02-10 2025-12-31 13F TETRA TECH INC COM 88162G103 3,433,575 3,433,575 115,162 0.0123
2025-11-13 2025-09-30 13F TETRA TECH INC COM 88162G103 0 -2,915,542 -100.00 0 -100.00
2025-08-13 2025-06-30 13F TETRA TECH INC COM 88162G103 2,915,542 -152,721 -4.98 104,843 16.82 0.0131
2026-05-11 2025-03-31 13F/A-1 TETRA TECH INC COM 88162G103 3,068,263 21,324 0.70 89,747 -26.07 0.0126
2025-02-12 2024-12-31 13F TETRA TECH INC COM 88162G103 3,046,939 2,939 0.10 121,390 -15.44 0.0159
2025-11-12 2024-09-30 13F/A-1 TETRA TECH INC COM 88162G103 3,044,000 2,431,603 397.06 143,555 14.64 0.0201
2024-08-14 2024-06-30 13F TETRA TECH INC COM 88162G103 612,397 9,322 1.55 125,223 12.41 0.0187
2025-05-14 2024-03-31 13F/A-1 TETRA TECH INC COM 88162G103 603,075 24,058 4.15 111,394 15.25 0.0176
2024-02-09 2023-12-31 13F TETRA TECH INC COM 88162G103 579,017 82,217 16.55 96,655 27.97 0.0169
2024-11-13 2023-09-30 13F/A-1 TETRA TECH INC COM 88162G103 496,800 -2,493 -0.50 75,529 -7.62 0.0153
2024-08-14 2023-06-30 13F/A-1 TETRA TECH INC COM 88162G103 499,293 -177,997 -26.28 81,754 -17.84 0.0161
2024-05-15 2023-03-31 13F/A-1 TETRA TECH INC COM 88162G103 677,290 -235,085 -25.77 99,501 -24.89 0.0218
2023-02-14 2022-12-31 13F TETRA TECH INC COM 88162G103 912,375 90,127 10.96 132,468 25.34 0.0319
2023-11-13 2022-09-30 13F/A-1 TETRA TECH INC COM 88162G103 822,248 2,272 0.28 105,684 -5.61 0.0281
2023-08-14 2022-06-30 13F/A-1 TETRA TECH INC COM 88162G103 819,976 -505,308 -38.13 111,968 -48.78 0.0289
2023-05-12 2022-03-31 13F/A-1 TETRA TECH INC COM 88162G103 1,325,284 -2,896 -0.22 218,592 -3.07 0.0476
2022-03-09 2021-12-31 13F/A-1 TETRA TECH INC COM 88162G103 1,328,180 -188,715 -12.44 225,525 -0.44 0.0464
2022-11-14 2021-09-30 13F/A-1 TETRA TECH INC COM 88162G103 1,516,895 -4,397 -0.29 226,533 22.02 0.0501
2022-08-15 2021-06-30 13F/A-1 TETRA TECH INC COM 88162G103 1,521,292 -19,237 -1.25 185,658 -11.20 0.0402
2022-05-09 2021-03-31 13F/A-1 TETRA TECH INC COM 88162G103 1,540,529 -289,638 -15.83 209,081 -1.33 0.0479
2021-03-02 2020-12-31 13F/A-1 TETRA TECH INC COM 88162G103 1,830,167 -24,194 -1.30 211,897 19.65 0.0495
2021-11-12 2020-09-30 13F/A-1 TETRA TECH INC COM 88162G103 1,854,361 -20,180 -1.08 177,091 19.40 0.0470
2021-08-13 2020-06-30 13F/A-1 TETRA TECH INC COM 88162G103 1,874,541 10,458 0.56 148,314 12.66 0.0427
2021-05-07 2020-03-31 13F/A-1 TETRA TECH INC COM 88162G103 1,864,083 0 0.00 131,642 -18.04 0.0469
2020-03-03 2019-12-31 13F/A-1 TETRA TECH INC COM 88162G103 1,864,083 0 0.00 160,609 -0.69 0.0448
2020-11-13 2019-09-30 13F/A-1 TETRA TECH COM 88162G103 1,864,083 -76,736 -3.95 161,728 6.09 0.0495
2020-08-13 2019-06-30 13F/A-1 TETRA TECH COM 88162G103 1,940,819 0 0.00 152,451 31.82 0.0471
2020-05-11 2019-03-31 13F/A-2 TETRA TECH COM 88162G103 1,940,819 38,378 2.02 115,653 17.43 0.0374
2019-03-04 2018-12-31 13F/A-1 TETRA TECH COM 88162G103 1,902,441 51,165 2.76 98,489 -22.11 0.0366
2019-12-02 2018-09-30 13F/A-3 TETRA TECH COM 88162G103 1,851,276 -140,000 -7.03 126,441 8.54 0.0411
2019-12-02 2018-09-30 13F/A-2 TETRA TECH COM 88162G103 1,851,276 -140,000 126,441 0.0411
2019-11-12 2018-09-30 13F/A-1 TETRA TECH COM 88162G103 1,851,276 -140,000 126,441 0.0411
2019-08-12 2018-06-30 13F/A-1 TETRA TECH COM 88162G103 1,991,276 0 0.00 116,490 19.51 0.0400
2019-05-15 2018-03-31 13F/A-2 TETRA TECH COM 88162G103 1,991,276 -79,549 -3.84 97,473 -2.24 0.0353
2018-03-05 2017-12-31 13F/A-1 TETRA TECH COM 88162G103 2,070,825 -303,843 -12.80 99,711 -9.80 0.0357
2018-11-13 2017-09-30 13F/A-1 TETRA TECH COM 88162G103 2,374,668 476,854 25.13 110,541 27.31 0.0419
2018-07-24 2017-06-30 13F/A-1 TETRA TECH COM 88162G103 1,897,814 260,289 15.90 86,825 29.80 0.0345
2018-05-11 2017-03-31 13F/A-1 TETRA TECH COM 88162G103 1,637,525 -308,688 -15.86 66,893 -20.35 0.0274
2017-03-02 2016-12-31 13F/A-1 TETRA TECH COM 88162G103 1,946,213 91,757 4.95 83,979 33.67 0.0367
2017-11-13 2016-09-30 13F/A-1 TETRA TECH COM 88162G103 1,854,456 -20,200 -1.08 62,824 9.00 0.0297
2017-08-09 2016-06-30 13F/A-1 TETRA TECH COM 88162G103 1,874,656 -282,613 -13.10 57,636 -10.41 0.0274
2017-05-10 2016-03-31 13F/A-1 TETRA TECH COM 88162G103 2,157,269 -25,000 -1.15 64,330 13.29 0.0316
2016-04-18 2015-12-31 13F/A-2 TETRA TECH COM 88162G103 2,182,269 0 0.00 56,782 7.03 0.0282
2016-03-16 2015-12-31 13F/A-1 TETRA TECH COM 88162G103 2,182,269 0 56,782 0.0285
2016-11-14 2015-09-30 13F/A-2 TETRA TECH COM 88162G103 2,182,269 -1,319,118 -37.67 53,051 -40.91 0.0278
2016-08-12 2015-06-30 13F/A-1 TETRA TECH COM 88162G103 3,501,387 -46,449 -1.31 89,775 5.35 0.0449
2016-05-13 2015-03-31 13F/A-1 TETRA TECH COM 88162G103 3,547,836 818,097 29.97 85,219 16.92 0.0418
2015-03-19 2014-12-31 13F/A-1 TETRA TECH COM 88162G103 2,729,739 756,377 72,884 0.0372
2016-04-18 2014-12-31 13F/A-2 TETRA TECH COM 88162G103 2,729,739 756,377 38.33 72,884 47.85 0.0370
2015-11-12 2014-09-30 13F/A-1 TETRA TECH COM 88162G103 1,973,362 1,272,186 181.44 49,295 155.64 0.0267
2015-08-10 2014-06-30 13F/A-1 TETRA TECH COM 88162G103 701,176 -134,400 -16.08 19,283 -22.01 0.0104
2015-05-12 2014-03-31 13F/A-1 TETRA TECH COM 88162G103 835,576 -39,400 -4.50 24,724 0.99 0.0140
2014-03-07 2013-12-31 13F/A-1 TETRA TECH COM 88162G103 874,976 0 24,481 0.0150
2014-03-20 2013-12-31 13F/A-2 TETRA TECH COM 88162G103 874,976 0 24,481 0.0144
2014-05-12 2013-12-31 13F/A-3 TETRA TECH COM 88162G103 874,976 0 0.00 24,481 8.07 0.0141
2014-11-14 2013-09-30 13F/A-1 TETRA TECH COM 88162G103 874,976 -475,309 -35.20 22,653 -28.64 0.0132
2014-08-14 2013-06-30 13F/A-1 TETRA TECH COM 88162G103 1,350,285 796,569 143.86 31,745 88.03 0.0197
2014-04-04 2013-03-31 13F/A-1 TETRA TECH COM 88162G103 553,716 51,401 16,883 0.0112
2014-05-12 2013-03-31 13F/A-2 TETRA TECH COM 88162G103 553,716 51,401 10.23 16,883 27.99 0.0109
2013-11-14 2012-09-30 13F/A-1 TETRA TECH COM 88162G103 502,315 0 0.00 13,191 2.14 0.0089
2013-08-15 2012-06-30 13F/A-1 TETRA TECH COM 88162G103 502,315 502,315 12,914 0.0104
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.