利樂科技公司
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionInvesco Ltd.
Latest Disclosed Ownership2,864,603 shares
Ownership 4.50%
Invesco Ltd. ownership in TTEK / Tetra Tech, Inc.

2012-04-09 - Invesco Ltd. has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,864,603 shares of Tetra Tech, Inc. (US:TTEK). This represents 4.5 percent ownership of the company.

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)
2012-04-09 2012-04-09 13G/A 2,864,603 4.50
2012-02-10 2012-02-10 13G/A 3,596,670 5.80

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)
2026-05-12 2026-03-31 13F TETRA TECH INC COM 88162G103 2,934,900 364,793 14.19 88,399 2.55 0.0017
2026-02-19 2025-12-31 13F TETRA TECH INC COM 88162G103 2,570,107 259,887 11.25 86,201 11.78 0.0132
2025-11-13 2025-09-30 13F TETRA TECH INC COM 88162G103 2,310,220 -219,965 -8.69 77,115 -15.24 0.0121
2025-08-13 2025-06-30 13F TETRA TECH INC COM 88162G103 2,530,185 -1,105,541 -30.41 90,985 -14.44 0.0155
2025-05-12 2025-03-31 13F TETRA TECH INC COM 88162G103 3,635,726 719,326 24.66 106,345 -8.47 0.0201
2025-02-13 2024-12-31 13F TETRA TECH INC COM 88162G103 2,916,400 -295,060 -9.19 116,189 -23.28 0.0215
2024-11-12 2024-09-30 13F TETRA TECH INC COM 88162G103 3,211,460 2,572,230 402.40 151,452 15.87 0.0292
2024-08-13 2024-06-30 13F TETRA TECH INC COM 88162G103 639,230 -278,939 -30.38 130,710 -22.93 0.0276
2024-05-14 2024-03-31 13F TETRA TECH INC COM 88162G103 918,169 -36,497 -3.82 169,595 6.42 0.0364
2024-02-13 2023-12-31 13F TETRA TECH INC COM 88162G103 954,666 75,028 8.53 159,362 19.17 0.0379
2023-11-13 2023-09-30 13F TETRA TECH INC COM 88162G103 879,638 51,139 6.17 133,731 -1.42 0.0360
2023-08-11 2023-06-30 13F TETRA TECH INC COM 88162G103 828,499 13,871 1.70 135,658 13.35 0.0356
2023-05-12 2023-03-31 13F TETRA TECH INC COM 88162G103 814,628 47,139 6.14 119,677 7.40 0.0334
2023-02-13 2022-12-31 13F TETRA TECH INC COM 88162G103 767,489 -188,137 -19.69 111,432 -9.28 0.0326
2022-11-14 2022-09-30 13F TETRA TECH INC COM 88162G103 955,626 -14,246 -1.47 122,827 -7.26 0.0395
2022-08-15 2022-06-30 13F TETRA TECH INC COM 88162G103 969,872 52,255 5.69 132,436 -12.50 0.0401
2022-05-16 2022-03-31 13F TETRA TECH INC COM 88162G103 917,617 64,168 7.52 151,353 4.44 0.0386
2022-02-14 2021-12-31 13F TETRA TECH INC COM 88162G103 853,449 20,319 2.44 144,916 16.47 0.0349
2021-11-15 2021-09-30 13F TETRA TECH INC COM 88162G103 833,130 -81,360 -8.90 124,420 11.48 0.0315
2021-08-17 2021-06-30 13F TETRA TECH INC COM 88162G103 914,490 -9,071 -0.98 111,605 -10.96 0.0274
2021-05-17 2021-03-31 13F TETRA TECH INC COM 88162G103 923,561 -24,936 -2.63 125,346 14.14 0.0335
2021-02-16 2020-12-31 13F TETRA TECH INC COM 88162G103 948,497 7,777 0.83 109,816 22.24 0.0320
2020-11-16 2020-09-30 13F TETRA TECH INC COM 88162G103 940,720 69,878 8.02 89,838 30.39 0.0304
2020-08-14 2020-06-30 13F TETRA TECH INC COM 88162G103 870,842 120,160 16.01 68,901 29.97 0.0246
2020-05-15 2020-03-31 13F TETRA TECH INC COM 88162G103 750,682 14,439 1.96 53,013 -16.43 0.0223
2020-02-14 2019-12-31 13F TETRA TECH INC COM 88162G103 736,243 -147,104 -16.65 63,434 -17.23 0.0197
2019-11-14 2019-09-30 13F TETRA TECH INC COM 88162G103 883,347 20,377 2.36 76,639 13.06 0.0200
2019-08-14 2019-06-30 13F/A-1 TETRA TECH INC COM 88162G103 862,970 -183,482 -17.53 67,787 8.71 0.0174
2019-08-14 2019-06-30 13F TETRA TECH INC COM 88162G103 862,970 -1,022,395 67,787
2019-05-15 2019-03-31 13F TETRA TECH INC COM 88162G103 1,046,452 -81,317 -7.21 62,358 6.81 0.0210
2019-02-14 2018-12-31 13F TETRA TECH INC COM 88162G103 1,127,769 188,335 20.05 58,384 -9.01 0.0223
2018-11-14 2018-09-30 13F TETRA TECH INC COM 88162G103 939,434 96,507 11.45 64,163 30.12 0.0202
2018-08-14 2018-06-30 13F TETRA TECH INC COM 88162G103 842,927 -187,639 -18.21 49,311 -2.25 0.0163
2018-05-15 2018-03-31 13F TETRA TECH INC COM 88162G103 1,030,566 106,561 11.53 50,447 13.39 0.0189
2018-02-14 2017-12-31 13F TETRA TECH INC COM 88162G103 924,005 -151,817 -14.11 44,491 -11.16 0.0160
2017-11-14 2017-09-30 13F TETRA TECH INC COM 88162G103 1,075,822 -99,265 -8.45 50,080 -6.85 0.0185
2017-08-14 2017-06-30 13F TETRA TECH INC COM 88162G103 1,175,087 212,029 22.02 53,760 36.65 0.0167
2017-05-15 2017-03-31 13F TETRA TECH INC COM 88162G103 963,058 -38,497 -3.84 39,341 -8.97 0.0129
2017-02-14 2016-12-31 13F TETRA TECH INC COM 88162G103 1,001,555 259,707 35.01 43,217 64.24 0.0145
2016-11-14 2016-09-30 13F TETRA TECH INC COM 88162G103 741,848 43,034 6.16 26,313 22.47 0.0090
2016-08-15 2016-06-30 13F TETRA TECH INC COM 88162G103 698,814 -227,770 -24.58 21,485 -22.24 0.0079
2016-05-16 2016-03-31 13F TETRA TECH INC COM 88162G103 926,584 67,583 7.87 27,630 23.61 0.0112
2016-02-16 2015-12-31 13F TETRA TECH INC COM 88162G103 859,001 -177,241 -17.10 22,352 -11.27 0.0089
2015-11-16 2015-09-30 13F TETRA TECH INC COM 88162G103 1,036,242 80,062 8.37 25,191 2.75 0.0107
2015-08-14 2015-06-30 13F TETRA TECH COMMON 88162G103 956,180 -1,693,355 -63.91 24,516 -61.48 0.0096
2015-05-15 2015-03-31 13F TETRA TECH COMMON 88162G103 2,649,535 -406,534 -13.30 63,642 -22.00 0.0246
2015-02-13 2014-12-31 13F TETRA TECH COMMON 88162G103 3,056,069 -189,192 -5.83 81,597 0.66 0.0315
2014-11-14 2014-09-30 13F TETRA TECH COMMON 88162G103 3,245,261 63,917 2.01 81,066 -7.34 0.0324
2014-08-14 2014-06-30 13F TETRA TECH COMMON 88162G103 3,181,344 99,228 3.22 87,488 -4.07 0.0344
2014-05-15 2014-03-31 13F TETRA TECH COMMON 88162G103 3,082,116 58,833 1.95 91,200 7.81 0.0370
2014-02-13 2013-12-31 13F TETRA TECH COMMON 88162G103 3,023,283 -63,623 -2.06 84,591 5.84 0.0336
2013-11-13 2013-09-30 13F TETRA TECH COMMON 88162G103 3,086,906 239,376 8.41 79,920 19.38 0.0347
2013-08-14 2013-06-30 13F TETRA TECH COMMON 88162G103 2,847,530 2,847,530 66,946 0.0312
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.