Hallstatt Advisors L.P.
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 4, 2026), Hallstatt Advisors L.P. reported 13 stock positions worth $141.9 million. Its top holding was Granite Construction (GVA) at 14.8% of the portfolio, followed by Casella Waste Systems Class A (CWST, 12.9%) and Te Connectivity (TEL, 9.5%). Compared with Q1 2026, it opened 2 new positions, sold out of 4, added to 5 and reduced 4. The biggest buy was a new position in Amphenol Class A (APH) and the biggest sale an exit from Belden (BDC).
- Most Recent 13F
- Q2 2026
- Location
- NEW YORK, NY
- CIK
- 0002040638
- Portfolio Value
- $141.9M (Q2 2026)
- SEC Filing
- 0001214659-26-009497 ↗ filed Aug 4, 2026
Holdings Value
Holdings 13 stocks · $141.9M
| GVA Granite Construction Inc. | 14.76% | 132,484 | $20.9M | No change |
| CWST Casella Waste Systems Inc. Class A | 12.95% | 189,527 | $18.4M | Add +14.6% |
| TEL Te Connectivity PLC | 9.46% | 66,564 | $13.4M | Add +25.8% |
| VST Vistra Corp. | 9.10% | 81,444 | $12.9M | Add +17.9% |
| CTRI Centuri Holdings Inc. | 8.56% | 401,715 | $12.1M | Add +40.6% |
| CLH Clean Harbors Inc. | 8.40% | 39,917 | $11.9M | Reduce -13.4% |
| SEI Solaris Energy Infrastructur | 8.33% | 146,907 | $11.8M | Add +22.2% |
| APH Amphenol Corp. Class A | 8.07% | 64,975 | $11.5M | New |
| GFL GFL Environmental Inc.-Sub VT | 6.90% | 266,189 | $9.8M | Reduce -16.6% |
| SECYF Secure Waste Infrastructure | 5.52% | 501,743 | $7.8M | No change |
| EXP Eagle Materials Inc. | 3.56% | 22,463 | $5.1M | Reduce -39.8% |
| MT Arcelormittal-NY Registered | 2.71% | 63,949 | $3.9M | Reduce -8.0% |
| ATS Ats Corp. | 1.68% | 83,020 | $2.4M | New |
Portfolio Sells Q1 2026 → Q2 2026
| BDC Belden Inc. | Sold out | 0.00% | −5.59 |
| MRVL Marvell Technology Inc. | Sold out | 0.00% | −5.47 |
| GFL GFL Environmental Inc.-Sub VT | Reduce -16.6% | 6.90% | −3.64 |
| CLH Clean Harbors Inc. | Reduce -13.4% | 8.40% | −2.06 |
| EXP Eagle Materials Inc. | Reduce -39.8% | 3.56% | −2.03 |
| AER Aercap Holdings NV | Sold out | 0.00% | −1.09 |
| SMERY Siemens Energy AG Spon ADR | Sold out | 0.00% | −0.28 |
| MT Arcelormittal-NY Registered | Reduce -8.0% | 2.71% | −0.14 |
Portfolio Buys Q1 2026 → Q2 2026
| APH Amphenol Corp. Class A | New | 8.07% | +8.07 |
| SEI Solaris Energy Infrastructur | Add +22.2% | 8.33% | +2.95 |
| CWST Casella Waste Systems Inc. Class A | Add +14.6% | 12.95% | +2.57 |
| CTRI Centuri Holdings Inc. | Add +40.6% | 8.56% | +1.96 |
| ATS Ats Corp. | New | 1.68% | +1.68 |
| VST Vistra Corp. | Add +17.9% | 9.10% | +0.89 |
| TEL Te Connectivity PLC | Add +25.8% | 9.46% | +0.70 |