Tetra Tech, Inc.
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionCovestor Ltd
Latest Disclosed Ownership338 shares
Latest Disclosed Value $ 10
Covestor Ltd reports 33.73% decrease in ownership of TTEK / Tetra Tech, Inc.

On May 5, 2026 - Covestor Ltd filed a 13F-HR form disclosing ownership of 338 shares of Tetra Tech, Inc. (US:TTEK) valued at $10,181 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 510 shares of Tetra Tech, Inc.. The current value of the position is $9,454 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)
2026-05-05 2026-03-31 13F TETRA TECH COMMON 88162G103 338 -172 -33.73 0 0.0069
2026-02-06 2025-12-31 13F TETRA TECH COMMON 88162G103 510 -1,843 -78.33 0 0.0089
2025-10-30 2025-09-30 13F TETRA TECH COMMON 88162G103 2,353 -3,084 -56.72 0 0.0435
2025-08-11 2025-06-30 13F TETRA TECH COMMON 88162G103 5,437 613 12.71 0 0.1156
2025-05-12 2025-03-31 13F TETRA TECH COMMON 88162G103 4,824 841 21.11 0 0.0941
2025-02-13 2024-12-31 13F TETRA TECH COMMON 88162G103 3,983 2,011 101.98 0 0.0996
2024-11-01 2024-09-30 13F TETRA TECH COMMON 88162G103 1,972 1,526 342.15 0 0.0583
2024-08-09 2024-06-30 13F TETRA TECH COMMON 88162G103 446 -49 -9.90 0 0.0589
2024-05-10 2024-03-31 13F TETRA TECH COMMON 88162G103 495 400 421.05 0 0.0584
2024-02-09 2023-12-31 13F TETRA TECH COMMON 88162G103 95 17 21.79 0 0.0109
2023-11-13 2023-09-30 13F TETRA TECH COMMON 88162G103 78 -367 -82.47 0 0.0090
2023-08-11 2023-06-30 13F TETRA TECH COMMON 88162G103 445 57 14.69 0 0.0556
2023-05-15 2023-03-31 13F TETRA TECH COMMON 88162G103 388 -107 -21.62 0 -100.00 0.0497
2023-02-14 2022-12-31 13F/A-1 TETRA TECH COMMON 88162G103 495 -6 -1.20 72 12.50 0.0587
2023-02-14 2022-12-31 13F TETRA TECH COMMON 88162G103 495 -6 72 58.7122
2022-11-14 2022-09-30 13F TETRA TECH COMMON 88162G103 501 220 78.29 64 68.42 0.0564
2022-08-10 2022-06-30 13F TETRA TECH INC COM 88162G103 281 33 13.31 38 -7.32 0.0301
2022-05-13 2022-03-31 13F TETRA TECH INC COM 88162G103 248 118 90.77 41 86.36 0.0273
2022-02-10 2021-12-31 13F TETRA TECH INC COM 88162G103 130 130 22 0.0308
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.