Latest Mountaineer Partners Management, LLC Stock Portfolio
$137Million | No. of Holdings #11
Mountaineer Partners Management, LLC Performance
2026 Q2+8.05%
YTD+22.29%
2025+32.01%
About Mountaineer Partners Management, LLC and 13F Hedge Fund Stock Holdings
On 2026-08-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, Mountaineer Partners Management, LLC reported an equity portfolio of $137.5 Millions as of 30 Jun, 2026. <br><br> The top stock holdings of Mountaineer Partners Management, LLC are AMBP, BLDR, DHI. The fund has invested 5.9% of it's portfolio in ARDAGH METAL PACKAGING S A and 0% of portfolio in BUILDERS FIRSTSOURCE INC. <br><br> The fund managers got completely rid off HUDBAY MINERALS INC (HBM), FREEPORT MCMORAN INC (FCX) and KIRBY CORP (KEX) stocks. They significantly reduced their stock positions in ARDAGH METAL PACKAGING S A (AMBP).
Mountaineer Partners Management, LLC Equity Portfolio Value
Last Reported on: 13 Aug, 2026
$137Million
as of Aug 13, 2026Mountaineer Partners Management, LLC Annual Return Estimates Vs S&P 500
Our best estimate is that Mountaineer Partners Management, LLC made a return of 8.05% in the last quarter. In trailing 12 months, it's portfolio return was 57.07%.
- Performance
- S&P 500
New Buys
| Ticker | $ Bought |
|---|---|
| middleby corp | 11,616,900 |
New stocks bought by Mountaineer Partners Management, LLC
Additions
| Ticker | % Inc. |
|---|---|
| standardaero inc | 14.03 |
Additions to existing portfolio by Mountaineer Partners Management, LLC
Reductions
| Ticker | % Reduced |
|---|---|
| carpenter technology corp | -41.85 |
| ati inc | -34.17 |
| constellium se | -26.78 |
| sensient technologies corp | -15.87 |
| century alum co | -13.82 |
| alcoa corp | -10.92 |
| ardagh metal packaging s a | -8.3 |
| harmony gold mng ltd | -8.07 |
Mountaineer Partners Management, LLC reduced stake in above stock
Sold off
| Ticker | $ Sold |
|---|---|
| frontier group hldgs inc | -3,365,410 |
| hudbay minerals inc | -14,756,200 |
| freeport mcmoran inc | -14,164,400 |
| builders firstsource inc | -8,085,050 |
| kirby corp | -11,828,600 |
| d r horton inc | -9,130,760 |
Mountaineer Partners Management, LLC got rid off the above stocks
Sector Distribution
Mountaineer Partners Management, LLC has about 37% of it's holdings in Others sector.
- Others
- Basic Materials
- Industrials
| Sector | % |
|---|---|
| Others | 37 |
| Basic Materials | 36.6 |
| Industrials | 26.5 |
Market Cap. Distribution
Mountaineer Partners Management, LLC has about 25.9% of it's portfolio invested in the large-cap and mega-cap stocks.
- MID-CAP
- UNALLOCATED
- LARGE-CAP
| Category | % |
|---|---|
| MID-CAP | 37.1 |
| UNALLOCATED | 37 |
| LARGE-CAP | 25.9 |
Stocks belong to which Index?
About 57.9% of the stocks held by Mountaineer Partners Management, LLC either belong to S&P 500 or RUSSELL 2000 index.
- RUSSELL 2000
- Others
| Index | % |
|---|---|
| RUSSELL 2000 | 57.9 |
| Others | 42.1 |
Mountaineer Partners Management, LLC Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of Mountaineer Partners Management, LLC
Mountaineer Partners Management, LLC has 11 stocks in it's portfolio. CENX proved to be the most loss making stock for the portfolio. CRS was the most profitable stock for Mountaineer Partners Management, LLC last quarter.
$137.48MTotal Value
17.00Positions
13 Aug, 2026Last Reported
| Expand | Holdingsorted ascending | % Portfolio | Shares Held | $ Value | % Change |
|---|---|---|---|---|---|
 Alcoa Corp Mountaineer Partners Management, LLC's holding in Alcoa Corp over time | 7.89% | 208,165 | $10.85M 7.89% | 10.92%decreased 10.92 percentreduced | |
 AMBP Ardagh Metal Packaging S AArdagh Metal Packaging S AAMBP | 5.94% | 1,722,230 | $8.16M 5.94% | 8.3%decreased 8.3 percentreduced | |
| 8.66% | 60,419 | $11.91M 8.66% | 34.17%decreased 34.17 percentreduced | ||
 Builders Firstsource Inc Mountaineer Partners Management, LLC's holding in Builders Firstsource Inc over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 CCJ Cameco CorpCameco CorpCCJ | 2.96% | 39,903 | $4.06M 2.96% | 5.94%decreased 5.94 percentreduced | |
 Century Alum Co Century Alum CoCENX Mountaineer Partners Management, LLC's holding in Century Alum Co over time | 16.84% | 503,309 | $23.16M 16.84% | 13.82%decreased 13.82 percentreduced | |
 Carpenter Technology Corp Mountaineer Partners Management, LLC's holding in Carpenter Technology Corp over time | 9.38% | 20,894 | $12.89M 9.38% | 41.85%decreased 41.85 percentreduced | |
 CSTM Constellium SeConstellium SeCSTM | 11.18% | 482,130 | $15.37M 11.18% | 26.78%decreased 26.78 percentreduced | |
 D R Horton Inc Mountaineer Partners Management, LLC's holding in D R Horton Inc over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 Freeport Mcmoran Inc Mountaineer Partners Management, LLC's holding in Freeport Mcmoran Inc over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 HBM Hudbay Minerals IncHudbay Minerals IncHBM | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 HMY Harmony Gold Mng LtdHarmony Gold Mng LtdHMY | 6.78% | 612,949 | $9.32M 6.78% | 8.07%decreased 8.07 percentreduced | |
 Kirby Corp Kirby CorpKEX Mountaineer Partners Management, LLC's holding in Kirby Corp over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
 Middleby Corp Middleby CorpMIDD Mountaineer Partners Management, LLC's holding in Middleby Corp over time | 8.45% | 67,536 | $11.62M 8.45% | Newnew position | |
 Sensient Technologies Corp Mountaineer Partners Management, LLC's holding in Sensient Technologies Corp over time | 11.81% | 131,727 | $16.24M 11.81% | 15.87%decreased 15.87 percentreduced | |
 Frontier Group Hldgs Inc Mountaineer Partners Management, LLC's holding in Frontier Group Hldgs Inc over time | 0% | 0.00 | $0.00 0% | 100%decreased 100 percentsold off | |
Com Standardaero IncStandardaero Inc | 10.11% | 464,595 | $13.90M 10.11% | 14.03%increased 14.03 percentadded | |
