Tetra Tech, Inc.
DE ˙ DB ˙ US88162G1031
23,41 € ↑0,45 (1,96%)
2026-06-05
AKTIENPREIS
SecurityDE:TT6 / Tetra Tech, Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership61,701 shares
Latest Disclosed Value $ 1,858,434
Summit Trail Advisors, Llc reports 16.89% increase in ownership of TT6 / Tetra Tech, Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 61,701 shares of Tetra Tech, Inc. (DE:TT6) valued at $1,604,226 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 52,785 shares of Tetra Tech, Inc.. This represents a change in shares of 16.89% during the quarter. The current value of the position is $1,444,420 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)
2026-05-12 2026-03-31 13F TETRA TECH INC COM 88162G103 61,701 8,916 16.89 1,858 4.97 0.0266
2026-02-17 2025-12-31 13F TETRA TECH INC COM 88162G103 52,785 -18,244 -25.69 1,770 -25.32 0.0306
2025-11-14 2025-09-30 13F TETRA TECH INC COM 88162G103 71,029 28,871 68.48 2,371 56.33 0.0327
2025-08-14 2025-06-30 13F TETRA TECH INC COM 88162G103 42,158 22,001 109.15 1,516 157.39 0.0260
2025-04-28 2025-03-31 13F TETRA TECH INC COM 88162G103 20,157 20,157 590 0.0194
2019-02-13 2018-12-31 13F TETRA TECH INC NEW COM EQUITY 88162G103 0 -7,697 -100.00 0 -100.00
2018-11-14 2018-09-30 13F TETRA TECH INC NEW COM EQUITY 88162G103 7,697 -517 -6.29 526 9.36 0.1161
2018-08-10 2018-06-30 13F Tetra Tech Inc New Com EQUITY 88162G103 8,214 -27,255 -76.84 481 -66.57 0.1682
2018-05-22 2018-03-31 13F/A-1 TETRA TECH INC NEW COM EQUITY 88162G103 35,469 3,438 10.73 1,439 -9.10 0.2442
2018-05-21 2018-03-31 13F TETRA TECH INC NEW COM EQUITY 88162G103 1,439,395 1,407,364 1,439
2018-02-14 2017-12-31 13F TETRA TECH INC NEW COM EQUITY 88162G103 32,031 32,031 1,583 0.1999
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.