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Portfolio (Quarterly) Guide ↗

Mountaineer Partners Management, LLC

· CIK 0001730532
13F Portfolio $179M AUM 34 positions Filed Feb 13, 2026 EDGAR ↗ ← All Funds
Q4 2025 Q3 2025 · All 3 New 5 Added 9 Reduced 4 Exited
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
1 CENX CENTURY ALUM CO Basic Materials 608,475.0 $23.8M 13.34% -53K -8.0% $39.18 +56.2%
2 HBM HUDBAY MINERALS INC Basic Materials 787,247.0 $15.6M 8.74% -168K -17.6% $19.85 +40.2%
3 ATI ATI INC Industrials 128,909.0 $14.8M 8.28% -15K -10.5% $114.76 +73.0%
4 FCX FREEPORT-MCMORAN INC Basic Materials 266,327.0 $13.5M 7.57% -28K -9.4% $50.79 +34.7%
5 AA ALCOA CORP Basic Materials 241,994.0 $12.9M 7.20% -55K -18.4% $53.14 +29.4%
6 CSTM CONSTELLIUM SE Basic Materials 681,464.0 $12.8M 7.19% -152K -18.3% $18.85 +88.9%
7 CRS CARPENTER TECHNOLOGY CORP Industrials 36,690.0 $11.6M 6.46% -4K -10.2% $314.84 +78.3%
8 AMBP ARDAGH METAL PACKAGING S A Consumer Cyclical 1,469,480.0 $6.0M 3.37% -69K -4.5% $4.10 +2.4%
9 NXE NEXGEN ENERGY LTD Energy 538,042.0 $4.9M 2.77% -26K -4.7% $9.20 +7.1%

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Basic Materials 53.3%
Industrials 29.8%
Consumer Cyclical 9.1%
Energy 7.7%