HALLSTATT ADVISORS L.P. — 13F Holdings & Portfolio
CIK 2040638 · latest 13F-HR filed 2026-05-07
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$126.4M
Long-equity book
15
Distinct positions
2026-03-31
Filed 2026-05-07
+5 / −6 / ↑2 / ↓6
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- GFL ENVIRONMENTAL INC SUB VTG SHS$5.0M +60.2%
- TE CONNECTIVITY PLC ORD SHS$2.8M +33.4%
Top Trims
- AERCAP HOLDINGS NV-$12.0M -89.7%
- ARCELORMITTAL SA LUXEMBOURG NY REGISTRY SH-$4.9M -57.7%
- CLEAN HARBORS INC-$2.0M -13.4%
- MARVELL TECHNOLOGY INC-$1.3M -16.1%
- CASELLA WASTE SYS INC CL A-$1.1M -7.7%
New Positions
- VISTRA CORP$10.4M
- SECURE WASTE INFRASTRUCTU CORP$7.9M
- BELDEN INC$7.1M
- SOLARIS ENERGY INFRAS INC COM CL A$6.8M
- SIEMENS ENERGY AG SPON ADS 1 ORD$358.5K
Exited Positions
- IDEX CORP$8.3M
- HUB GROUP INC CL A$5.7M
- EMERSON ELEC CO$5.6M
- FIRST SOLAR INC$2.8M
- OWENS CORNING NEW$2.6M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | GRANITE CONSTR INC | GVA | 387328107 | $15.9M | 12.56% | 132,484 | SH |
| 2 | GFL ENVIRONMENTAL INC SUB VTG SHS | GFL | 36168Q104 | $13.3M | 10.54% | 319,272 | SH |
| 3 | CLEAN HARBORS INC | CLH | 184496107 | $13.2M | 10.46% | 46,115 | SH |
| 4 | CASELLA WASTE SYS INC CL A | CWST | 147448104 | $13.1M | 10.38% | 165,385 | SH |
| 5 | TE CONNECTIVITY PLC ORD SHS | TEL | G87052109 | $11.1M | 8.75% | 52,924 | SH |
| 6 | VISTRA CORP | VST | 92840M102 | $10.4M | 8.22% | 69,077 | SH |
| 7 | CENTURI HOLDINGS INC COM SHS | CTRI | 155923105 | $8.3M | 6.60% | 285,721 | SH |
| 8 | SECURE WASTE INFRASTRUCTU CORP | WAST | 813921103 | $7.9M | 6.23% | 501,743 | SH |
| 9 | EAGLE MATLS INC | EXP | 26969P108 | $7.1M | 5.59% | 37,323 | SH |
| 10 | BELDEN INC | BDC | 077454106 | $7.1M | 5.59% | 61,576 | SH |
| 11 | MARVELL TECHNOLOGY INC | MRVL | 573874104 | $6.9M | 5.47% | 69,828 | SH |
| 12 | SOLARIS ENERGY INFRAS INC COM CL A | SEI | 83418M103 | $6.8M | 5.37% | 120,209 | SH |
| 13 | ARCELORMITTAL SA LUXEMBOURG NY REGISTRY SH | MT | 03938L203 | $3.6M | 2.86% | 69,489 | SH |
| 14 | AERCAP HOLDINGS NV | AER | N00985106 | $1.4M | 1.09% | 10,040 | SH |
| 15 | SIEMENS ENERGY AG SPON ADS 1 ORD | SMERY | 82621A203 | $358.5K | 0.28% | 2,125 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-07 | $126.4M | 15 | 0001214659-26-005718 |
| 2025-12-31 | 2026-02-10 | $134.2M | 16 | 0001214659-26-001402 |