HALLSTATT ADVISORS L.P. — 13F Holdings & Portfolio
CIK 2040638 · latest 13F-HR filed 2026-08-04
HALLSTATT ADVISORS L.P. manages $141.9M in 13F-reported U.S. long-equity assets across 13 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are GVA (14.76%), CWST (12.95%), TEL (9.46%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 2 new positions, exited 4, added to 7, and trimmed 3.
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.
APT 2D
NEW YORK, NY 10011
$141.9M
Long-equity book
13
Distinct positions
2026-06-30
Filed 2026-08-04
+2 / −4 / ↑7 / ↓3
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- CASELLA WASTE SYS INC CL A$5.3M +40.1%
- GRANITE CONSTR INC$5.1M +31.9%
- SOLARIS ENERGY INFRAS INC COM CL A$5.0M +74.0%
- CENTURI HOLDINGS INC COM SHS$3.8M +45.6%
- VISTRA CORP$2.5M +24.4%
Top Trims
- GFL ENVIRONMENTAL INC SUB VTG SHS-$3.5M -26.5%
- EAGLE MATLS INC-$2.0M -28.5%
- CLEAN HARBORS INC-$1.3M -9.8%
Exited Positions
- BELDEN INC$7.1M
- MARVELL TECHNOLOGY INC$6.9M
- AERCAP HOLDINGS NV$1.4M
- SIEMENS ENERGY AG SPON ADS 1 ORD$358.5K
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 | $20.9M | 14.76% | 132,484 | SH |
| 2 | CASELLA WASTE SYS INC CL A | CWST | 147448104 | $18.4M | 12.95% | 189,527 | SH |
| 3 | TE CONNECTIVITY PLC ORD SHS | TEL | G87052109 | $13.4M | 9.46% | 66,564 | SH |
| 4 | VISTRA CORP | VST | 92840M102 | $12.9M | 9.10% | 81,444 | SH |
| 5 | CENTURI HOLDINGS INC COM SHS | CTRI | 155923105 | $12.1M | 8.56% | 401,715 | SH |
| 6 | CLEAN HARBORS INC | CLH | 184496107 | $11.9M | 8.40% | 39,917 | SH |
| 7 | SOLARIS ENERGY INFRAS INC COM CL A | SEI | 83418M103 | $11.8M | 8.33% | 146,907 | SH |
| 8 | AMPHENOL CORP CL A | APH | 032095101 | $11.5M | 8.07% | 64,975 | SH |
| 9 | GFL ENVIRONMENTAL INC SUB VTG SHS | GFL | 36168Q104 | $9.8M | 6.90% | 266,189 | SH |
| 10 | SECURE WASTE INFRASTRUCTU CORP | WAST | 813921103 | $7.8M | 5.52% | 501,743 | SH |
| 11 | EAGLE MATLS INC | EXP | 26969P108 | $5.1M | 3.56% | 22,463 | SH |
| 12 | ARCELORMITTAL SA LUXEMBOURG NY REGISTRY SH | MT | 03938L203 | $3.9M | 2.71% | 63,949 | SH |
| 13 | ATS CORPORATION | ATS | 00217Y104 | $2.4M | 1.68% | 83,020 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-04 | $141.9M | 13 | 0001214659-26-009497 |
| 2026-03-31 | 2026-05-07 | $126.4M | 15 | 0001214659-26-005718 |
| 2025-12-31 | 2026-02-10 | $134.2M | 16 | 0001214659-26-001402 |