Mountaineer Partners Management, LLC

All Holdings — 2025 Q4

AI Portfolio Summary
In 2025 Q4, Mountaineer Partners Management, LLC maintained a portfolio of 21 distinct positions. The most significant new addition to the portfolio was SENSIENT TECHNOLOGIE, which now represents 6.16% of the total fund value. Conversely, Mountaineer Partners Management, LLC completely exited their position in EVERUS CONSTR GROUP.
PCA Score Concentration Risk
Risk ENB
Total Positions
21
Quarter
2025 Q4
Top Holding
CENX (13.3%)
Top 10 Concentration
76.2%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-21 of 21
Stock History Sector / Type Port % Prev % Rank / Prev Conviction Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
CENX
CENTURY ALUM CO
Basic Materials 13.34% 11.29% #1
Prev: #1
6.5 -52,568 -8.0%
P
S
608,475 $23,840,050 2021 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
HBM
HUDBAY MINERALS...
Basic Materials 8.74% 8.42% #2 1
Prev: #3
5.5 -168,172 -17.6%
P
S
787,247 $15,626,853 2023 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
ATI
ATI INC
Industrials 8.28% 6.81% #3 2
Prev: #5
4.8 -15,111 -10.5%
P
S
128,909 $14,793,597 2018 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
FCX
FREEPORT-MCMORA...
Basic Materials 7.57% 6.71% #4 2
Prev: #6
4.0 -27,722 -9.4%
P
S
266,327 $13,526,749 2022 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
AA
ALCOA CORP
Basic Materials 7.20% 5.67% #5 5
Prev: #10
3.9 -54,648 -18.4%
P
S
241,994 $12,859,561 2022 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
CSTM
CONSTELLIUM SE
Basic Materials 7.19% 7.22% #6 2
Prev: #4
3.4 -152,312 -18.3%
P
S
681,464 $12,845,596 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CRS
CARPENTER TECHN...
Industrials 6.46% 5.83% #7 2
Prev: #9
3.1 -4,159 -10.2%
P
S
36,690 $11,551,480 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
SXT
SENSIENT TECHNO...
Basic Materials 6.16% #8
Prev: #—
6.0 117,090 no change
NEW
117,090 $11,000,605 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
SARO
STANDARDAERO IN...
Industrials 5.90% 4.61% #9 2
Prev: #11
4.9 76,768 26.4%
P
S
367,498 $10,539,843 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
BLDR
BUILDERS FIRSTS...
Industrials 5.42% 4.28% #10 2
Prev: #12
5.2 33,332 54.9%
P
S
94,091 $9,681,023 2018 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
KEX
KIRBY CORP
Industrials 5.39% 3.18% #11 3
Prev: #14
4.7 22,013 33.6%
P
S
87,444 $9,634,580 2021 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
DHI
D R HORTON INC
Consumer Cyclical 5.24% 2.75% #12 4
Prev: #16
5.1 37,128 133.2%
P
S
65,004 $9,362,526 2020 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
AMBP
ARDAGH METAL PA...
Consumer Cyclical 3.37% 3.57% #13
Prev: #13
1.8 -69,004 -4.5%
P
S
1,469,480 $6,024,868 2021 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
NXE
NEXGEN ENERGY L...
Energy 2.77% 2.94% #14 1
Prev: #15
1.6 -26,465 -4.7%
P
S
538,042 $4,949,986 2021 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
ULCC
FRONTIER GROUP ...
Industrials 2.51% #15
Prev: #—
4.5 953,375 no change
NEW
953,375 $4,490,397 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
SJT
SAN JUAN BASIN ...
Bond/Debt 2.30% 2.53% #16 1
Prev: #17
1.4 13,297 1.8%
P
S
732,351 $4,115,813 2024 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
CCJ
CAMECO CORP
Energy 2.17% #17
Prev: #—
4.4 42,424 no change
NEW
42,424 $3,881,371 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ECG
EVERUS CONSTR G...
Industrials 0.00% 8.47%
Sold All 😨
(Was: #2)
0.0 -169,844 -100.0%
CLOSED
$— 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ENTG
ENTEGRIS INC
Technology 0.00% 6.63%
Sold All 😨
(Was: #7)
0.0 -123,234 -100.0%
CLOSED
$— 2023 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
VSH
VISHAY INTERTEC...
Technology 0.00% 6.60%
Sold All 😨
(Was: #8)
0.0 -742,177 -100.0%
CLOSED
$— 2018 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
UEC
URANIUM ENERGY ...
Energy 0.00% 2.49%
Sold All 😨
(Was: #18)
0.0 -320,952 -100.0%
CLOSED
$— 2025 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
Showing 1-21 of 21 holdings

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