Q2 2026 13F · SEC CIK 2040638
Hallstatt Advisors L.P.
Hedge fundFiled 2026-08-04 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $141.9M
- Reported positions
- 13
- Holdings vs S&P 500, 3 yrs
- —
- Assets under management
- $214.6M
Hallstatt Advisors L.P. is a hedge fund that reported 13 positions worth $141.9M in its Q2 2026 13F, filed 2026-08-04. Its largest holdings were Granite Constr Inc (GVA, 14.8%), Casella Waste Sys Inc (CWST, 12.9%), Te Connectivity PLC (TEL, 9.5%).
Hallstatt Advisors L.P. holdings all 13 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| GVAGranite Constr Inc | 14.8% | +0.0% | $20.9M |
| CWSTCasella Waste Sys Inc | 12.9% | +14.6% | $18.4M |
| TELTe Connectivity PLC | 9.5% | +25.8% | $13.4M |
| VSTVistra Corp | 9.1% | +17.9% | $12.9M |
| CTRICenturi Holdings Inc Com Shs | 8.6% | +40.6% | $12.1M |
| CLHClean Harbors Inc | 8.4% | -13.4% | $11.9M |
| SOISolaris Energy Infrastructure Inc | 8.3% | +22.2% | $11.8M |
| APHAmphenol Corp | 8.1% | — | $11.5M |
| GFLGfl Environmental Inc | 6.9% | -16.6% | $9.8M |
| SECYFSecure Waste Infrastructu Corp | 5.5% | +0.0% | $7.8M |
| EXPEagle Matls Inc | 3.6% | -39.8% | $5.1M |
| MTArcelormittal | 2.7% | -8.0% | $3.9M |
| ATSAts Corporation | 1.7% | — | $2.4M |
What Hallstatt Advisors L.P. bought and sold in Q2 2026, against Q1 2026.
New positions
- APH Amphenol Corp8.1% of 13F
- ATS Ats Corporation1.7% of 13F
Added to
- CTRI Centuri Holdings Inc Com Shs+40.6% shares
- TEL Te Connectivity PLC+25.8% shares
- SOI Solaris Energy Infrastructure Inc+22.2% shares
- VST Vistra Corp+17.9% shares
- CWST Casella Waste Sys Inc+14.6% shares
Reduced
- EXP Eagle Matls Inc-39.8% shares
- GFL Gfl Environmental Inc-16.6% shares
- CLH Clean Harbors Inc-13.4% shares
- MT Arcelormittal-8.0% shares
Sold out
- BDC Belden Incwas 5.6%
- MRVL Marvell Technology Incwas 5.5%
- AER Aercap Holdings NVwas 1.1%
- SMERY Siemens Energywas 0.3%
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- —
- 3 years
- —
- 5 years
- —
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q2 2026 | $141.9M | 13 |
| Q1 2026 | $126.4M | 15 |
| Q4 2025 | $134.2M | 16 |
Questions about Hallstatt Advisors L.P.'s portfolio
What stocks does Hallstatt Advisors L.P. own?
Hallstatt Advisors L.P.'s latest 13F, for Q2 2026 and filed Aug 4, 2026, lists 13 positions worth $141.9M. The largest are Granite Constr Inc (GVA) at 14.8%, Casella Waste Sys Inc (CWST) at 12.9%, Te Connectivity PLC (TEL) at 9.5%, Vistra Corp (VST) at 9.1% and Centuri Holdings Inc Com Shs (CTRI) at 8.6%.
What did Hallstatt Advisors L.P. buy last quarter?
In Q2 2026, Hallstatt Advisors L.P. added a new position in Amphenol Corp (APH), a new position in Ats Corporation (ATS), Centuri Holdings Inc Com Shs (CTRI) (+40.6% shares), Te Connectivity PLC (TEL) (+25.8% shares) and Solaris Energy Infrastructure Inc (SOI) (+22.2% shares), compared with its Q1 2026 filing.
What did Hallstatt Advisors L.P. sell last quarter?
In Q2 2026, Hallstatt Advisors L.P. sold all of Belden Inc (BDC), sold all of Marvell Technology Inc (MRVL), sold all of Aercap Holdings NV (AER), sold all of Siemens Energy (SMERY), Eagle Matls Inc (EXP) (-39.8% shares), Gfl Environmental Inc (GFL) (-16.6% shares) and Clean Harbors Inc (CLH) (-13.4% shares), compared with its Q1 2026 filing.
When is Hallstatt Advisors L.P.'s next 13F filing due?
13F filings are due 45 days after each quarter ends. Hallstatt Advisors L.P.'s filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.
How much money does Hallstatt Advisors L.P. manage?
Hallstatt Advisors L.P. reported $214.6M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $141.9M.