Hallstatt Advisors L.P.

In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 10, 2026), Hallstatt Advisors L.P. reported 16 stock positions worth $134.2 million. Its top holding was Granite Construction (GVA) at 12.1% of the portfolio, followed by Clean Harbors (CLH, 11.4%) and Casella Waste Systems Class A (CWST, 10.6%).

Most Recent 13F
Q2 2026
Location
NEW YORK, NY
CIK
0002040638
Portfolio Value
$134.2M (Q4 2025)
SEC Filing
0001214659-26-001402 ↗ filed Feb 10, 2026

Holdings Value

0$50.0M$100.0M$150.0M Q4 2025: $134.2M $134.2M Q4 2025 Q1 2026: $126.4M Q1 2026 Q2 2026: $141.9M Q2 2026

Holdings 16 stocks · $134.2M

GVA Granite Construction Inc. 12.12% 141,003 $16.3M —
CLH Clean Harbors Inc. 11.37% 65,101 $15.3M —
CWST Casella Waste Systems Inc. Class A 10.59% 145,140 $14.2M —
AER Aercap Holdings NV 9.99% 93,245 $13.4M —
CTRI Centuri Holdings Inc. 6.48% 344,621 $8.7M —
MT Arcelormittal-NY Registered 6.36% 187,455 $8.5M —
GFL GFL Environmental Inc.-Sub VT 6.19% 193,551 $8.3M —
TEL Te Connectivity PLC 6.18% 36,447 $8.3M —
IEX Idex Corp. 6.15% 46,411 $8.3M —
MRVL Marvell Technology Inc. 6.14% 97,023 $8.2M —
EXP Eagle Materials Inc. 5.59% 36,279 $7.5M —
HUBG Hub Group Inc. Class A 4.25% 133,823 $5.7M —
EMR Emerson Electric Co. 4.15% 41,978 $5.6M —
FSLR First Solar Inc. 2.06% 10,588 $2.8M —
OC Owens Corning 1.93% 23,200 $2.6M —
SMNEY Siemens Energy AG-Unsp ADR 0.43% 4,116 $577K —

Portfolio Sells Q4 2025

No earlier filing to compare with.

Portfolio Buys Q4 2025

No earlier filing to compare with.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 13$141.9MGVA, CWST, TEL, VST, CTRI
Q1 2026 15$126.4MGVA, GFL, CLH, CWST, TEL
Q4 2025 16$134.2MGVA, CLH, CWST, AER, CTRI