Tetra Tech, Inc.
MX ˙ BMV ˙ US88162G1031
SecurityMX:TTEK / Tetra Tech, Inc.
InstitutionPacer Advisors, Inc.
Latest Disclosed Ownership72,043 shares
Latest Disclosed Value $ 2,169,935
Pacer Advisors, Inc. reports 3.58% increase in ownership of TTEK / Tetra Tech, Inc.

On May 6, 2026 - Pacer Advisors, Inc. filed a 13F-HR form disclosing ownership of 72,043 shares of Tetra Tech, Inc. (MX:TTEK) valued at $2,169,935 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 24, 2026 disclosing 69,553 shares of Tetra Tech, Inc.. This represents a change in shares of 3.58% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-06 2026-03-31 13F Tetra Tech Common Stock - Domestic 88162G103 72,043 2,490 3.58 2,170 -6.99 0.0034
2026-02-24 2025-12-31 13F/A-1 Tetra Tech Common Stock - Domestic 88162G103 69,553 9,844 16.49 2,333 17.01 0.0060
2025-10-15 2025-09-30 13F Tetra Tech Common Stock - Domestic 88162G103 59,709 59,709 1,993 0.0050
2025-08-12 2025-06-30 13F Tetra Tech Common Stock - Domestic 88162G103 0 -15,617 -100.00 0 -100.00
2025-05-06 2025-03-31 13F Tetra Tech Common Stock - Domestic 88162G103 15,617 -37,078 -70.36 457 -78.28 0.0011
2025-01-22 2024-12-31 13F Tetra Tech Common Stock - Domestic 88162G103 52,695 -900 -1.68 2,099 -16.94 0.0045
2024-11-12 2024-09-30 13F Tetra Tech Common Stock - Domestic 88162G103 53,595 45,526 564.21 2,528 53.24 0.0053
2024-08-13 2024-06-30 13F Tetra Tech Common Stock - Domestic 88162G103 8,069 -1,815 -18.36 1,650 -9.64 0.0037
2024-05-10 2024-03-31 13F Tetra Tech Common Stock - Domestic 88162G103 9,884 1,887 23.60 1,826 36.81 0.0042
2024-01-16 2023-12-31 13F TETRA TECH INC Common Stock - Domestic 88162G103 7,997 1,773 28.49 1,335 41.01 0.0038
2023-11-13 2023-09-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 6,224 -4,587 -42.43 946 -46.55 0.0036
2023-07-12 2023-06-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 10,811 10,811 1,770 0.0071
2023-05-02 2023-03-31 13F TETRA TECH INC Common Stock - Domestic 88162G103 0 -10,150 -100.00 0 -100.00
2023-02-06 2022-12-31 13F TETRA TECH INC Common Stock - Domestic 88162G103 10,150 6,894 211.73 1,474 252.39 0.0075
2022-10-18 2022-09-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 3,256 2,634 423.47 418 391.76 0.0029
2022-08-12 2022-06-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 622 96 18.25 85 -2.30 0.0006
2022-04-05 2022-03-31 13F TETRA TECH INC Common Stock - Domestic 88162G103 526 -7,036 -93.04 87 -93.22 0.0007
2022-02-03 2021-12-31 13F TETRA TECH INC Common Stock - Domestic 88162G103 7,562 1,498 24.70 1,284 41.72 0.0132
2021-10-15 2021-09-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 6,064 26 0.43 906 22.93 0.0114
2021-07-21 2021-06-30 13F TETRA TECH INC Common Stock - Domestic 88162G103 6,038 -40 -0.66 737 -10.67 0.0105
2021-04-05 2021-03-31 13F TETRA TECH INC Common Stock 88162G103 6,078 -220 -3.49 825 13.17 0.0143
2021-01-20 2020-12-31 13F TETRA TECH INC Common Stock 88162G103 6,298 -6,839 -52.06 729 -41.91 0.0137
2020-10-19 2020-09-30 13F TETRA TECH INC Common Stock 88162G103 13,137 13,137 1,255 0.0267
2020-04-23 2020-03-31 13F TETRA TECH INC Common Stock 88162G103 0 -18,245 -100.00 0 -100.00
2020-02-10 2019-12-31 13F TETRA TECH INC Common Stock 88162G103 18,245 -1,395 -7.10 1,572 -7.75 0.0710
2019-10-10 2019-09-30 13F TETRA TECH INC Common Stock 88162G103 19,640 8,197 71.63 1,704 89.54 0.0383
2019-08-12 2019-06-30 13F TETRA TECH INC Common Stock 88162G103 11,443 -4,391 -27.73 899 -4.77 0.0220
2019-04-10 2019-03-31 13F TETRA TECH INC Common Stock 88162G103 15,834 15,834 944 0.0262
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.