Tetra Tech, Inc.
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionFifth Third Bancorp
Latest Disclosed Ownership78,175 shares
Latest Disclosed Value $ 2,354,623
Fifth Third Bancorp reports 2,004.31% increase in ownership of TTEK / Tetra Tech, Inc.

On May 1, 2026 - Fifth Third Bancorp filed a 13F-HR form disclosing ownership of 78,175 shares of Tetra Tech, Inc. (US:TTEK) valued at $2,354,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 3,715 shares of Tetra Tech, Inc.. This represents a change in shares of 2,004.31% during the quarter. The current value of the position is $2,173,265 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)
2026-05-01 2026-03-31 13F TETRA TECH INC COM 88162G103 78,175 74,460 2,004.31 2,355 1,798.39 0.0043
2026-02-02 2025-12-31 13F TETRA TECH INC COM 88162G103 3,715 -625 -14.40 125 -13.89 0.0004
2025-11-07 2025-09-30 13F TETRA TECH INC COM 88162G103 4,340 -782 -15.27 145 -21.74 0.0005
2025-07-15 2025-06-30 13F TETRA TECH INC COM 88162G103 5,122 -229 -4.28 184 17.95 0.0006
2025-04-15 2025-03-31 13F TETRA TECH INC COM 88162G103 5,351 475 9.74 157 -19.59 0.0006
2025-01-21 2024-12-31 13F TETRA TECH INC COM 88162G103 4,876 -727 -12.98 194 -26.52 0.0007
2024-10-17 2024-09-30 13F TETRA TECH INC COM 88162G103 5,603 4,468 393.66 264 13.79 0.0010
2024-07-22 2024-06-30 13F TETRA TECH INC COM 88162G103 1,135 374 49.15 232 65.71 0.0009
2024-04-23 2024-03-31 13F TETRA TECH INC COM 88162G103 761 -221 -22.51 141 -14.11 0.0005
2024-01-19 2023-12-31 13F TETRA TECH INC COM 88162G103 982 264 36.77 164 49.54 0.0007
2023-10-31 2023-09-30 13F TETRA TECH INC COM 88162G103 718 202 39.15 109 29.76 0.0005
2023-07-26 2023-06-30 13F TETRA TECH INC COM 88162G103 516 35 7.28 84 20.00 0.0004
2023-04-24 2023-03-31 13F TETRA TECH INC COM 88162G103 481 29 6.42 71 7.69 0.0003
2023-01-25 2022-12-31 13F TETRA TECH INC COM 88162G103 452 19 4.39 66 16.07 0.0003
2022-10-25 2022-09-30 13F TETRA TECH INC COM 88162G103 433 -121 -21.84 56 -26.32 0.0003
2022-08-04 2022-06-30 13F TETRA TECH INC COM 88162G103 554 46 9.06 76 -9.52 0.0004
2022-04-19 2022-03-31 13F TETRA TECH INC COM 88162G103 508 130 34.39 84 31.25 0.0003
2022-02-01 2021-12-31 13F TETRA TECH INC COM 88162G103 378 -63 -14.29 64 -3.03 0.0002
2021-10-15 2021-09-30 13F TETRA TECH INC COM 88162G103 441 164 59.21 66 94.12 0.0003
2021-08-06 2021-06-30 13F TETRA TECH INC COM 88162G103 277 4 1.47 34 -8.11 0.0001
2021-05-07 2021-03-31 13F TETRA TECH INC COM 88162G103 273 18 7.06 37 23.33 0.0002
2021-02-16 2020-12-31 13F TETRA TECH INC COM 88162G103 255 221 650.00 30 900.00 0.0001
2020-11-09 2020-09-30 13F TETRA TECH INC COM 88162G103 34 34 3 0.0000
2020-05-05 2020-03-31 13F TETRA TECH INC COM 88162G103 0 -381 -100.00 0 -100.00
2020-02-14 2019-12-31 13F TETRA TECH INC COM 88162G103 381 -5 -1.30 33 0.00 0.0002
2019-11-14 2019-09-30 13F TETRA TECH INC COM 88162G103 386 386 33 0.0002
2019-05-14 2019-03-31 13F TETRA TECH INC COM 88162G103 0 -7,947 -100.00 0 -100.00
2019-02-14 2018-12-31 13F TETRA TECH INC COM 88162G103 7,947 -328 -3.96 411 -27.26 0.0030
2018-11-14 2018-09-30 13F TETRA TECH INC COM 88162G103 8,275 -2,919 -26.08 565 -13.74 0.0036
2018-08-14 2018-06-30 13F TETRA TECH INC COM 88162G103 11,194 -493 -4.22 655 14.51 0.0044
2018-05-15 2018-03-31 13F TETRA TECH INC COM 88162G103 11,687 144 1.25 572 2.88 0.0039
2018-02-14 2017-12-31 13F TETRA TECH INC COM 88162G103 11,543 1,222 11.84 556 15.83 0.0038
2017-11-14 2017-09-30 13F TETRA TECH INC COM 88162G103 10,321 -217 -2.06 480 -0.41 0.0034
2017-08-11 2017-06-30 13F TETRA TECH INC COM 88162G103 10,538 10,450 11,875.00 482 11,950.00 0.0035
2017-05-12 2017-03-31 13F TETRA TECH INC COM 88162G103 88 50 131.58 4 100.00 0.0000
2017-02-13 2016-12-31 13F/A-1 TETRA TECH INC COM 88162G103 38 38 0.00 2 0.0000
2016-11-10 2016-09-30 13F TETRA TECH INC COM 88162G103 0 -300 -100.00 0 -100.00
2016-08-11 2016-06-30 13F TETRA TECH INC COM 88162G103 300 300 0.00 9 0.0001
2016-05-13 2016-03-31 13F TETRA TECH INC COM 88162G103 0 -165 -100.00 0 -100.00
2016-02-16 2015-12-31 13F TETRA TECH INC COM 88162G103 165 -105 -38.89 4 -42.86 0.0000
2015-11-13 2015-09-30 13F TETRA TECH INC COM 88162G103 270 161 147.71 7 133.33 0.0001
2015-08-14 2015-06-30 13F TETRA TECH INC COM 88162G103 109 -1 -0.91 3 0.00 0.0000
2015-05-14 2015-03-31 13F TETRA TECH INC COM 88162G103 110 110 0.00 3 0.0000
2014-11-17 2014-09-30 13F TETRA TECH INC COM 88162G103 0 -1,120 -100.00 0 -100.00
2014-08-14 2014-06-30 13F TETRA TECH INC COM 88162G103 1,120 0 0.00 31 -6.06 0.0003
2014-05-15 2014-03-31 13F TETRA TECH INC COM 88162G103 1,120 1,120 33 0.0003
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.