2026 Q1 Portfolio Activity
In 2026 Q1, Mountaineer Partners Management, LLC maintained a portfolio of 18 distinct positions. The most significant new addition was HARMONY GOLD MNG LTD, now representing 5.09% of the total fund value. They heavily accumulated shares in SENSIENT TECHNOLOGIES CORP, increasing the position by 33.7%. Conversely, Mountaineer Partners Management, LLC completely exited their position in NEXGEN ENERGY LTD.
Position History
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Total Positions
18
Quarter
2026 Q1
Top Holding
CENX (17.0%)
Top 10 Concentration
78.6%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-18 of 18
Mountaineer Partners Management, LLC Full Holdings List — 2026 Q1
| 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 | 17.02% | 13.34% |
#1
Prev: #1
|
6.5 |
—
|
-24,478 | -4.0% |
P
S
|
583,997 | $34,274,784 | 2021 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CSTM
CONSTELLIUM SE
|
Basic Materials | 8.04% | 7.19% |
#2
4
Prev: #6
|
5.2 |
—
|
-22,974 | -3.4% |
P
S
|
658,490 | $16,185,685 | 2019 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AA
ALCOA CORP
|
Basic Materials | 7.70% | 7.20% |
#3
2
Prev: #5
|
4.6 |
—
|
-8,307 | -3.4% |
P
S
|
233,687 | $15,500,459 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HBM
HUDBAY MINERALS...
|
Basic Materials | 7.33% | 8.74% |
#4
2
Prev: #2
|
3.9 |
—
|
-81,207 | -10.3% |
P
S
|
706,040 | $14,756,237 | 2023 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
FCX
FREEPORT MCMORA...
|
Basic Materials | 7.04% | 7.57% |
#5
1
Prev: #4
|
3.8 |
—
|
-25,354 | -9.5% |
P
S
|
240,973 | $14,164,393 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CRS
CARPENTER TECHN...
|
Industrials | 7.03% | 6.46% |
#6
1
Prev: #7
|
3.3 |
—
|
-761 | -2.1% |
P
S
|
35,929 | $14,161,415 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SXT
SENSIENT TECHNO...
|
Basic Materials | 6.72% | 6.16% |
#7
1
Prev: #8
|
5.2 |
—
|
39,494 | 33.7% |
P
S
|
156,584 | $13,535,121 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ATI
ATI INC
|
Industrials | 6.63% | 8.28% |
#8
5
Prev: #3
|
2.7 |
—
|
-37,125 | -28.8% |
P
S
|
91,784 | $13,350,901 | 2018 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KEX
KIRBY CORP
|
Industrials | 5.88% | 5.39% |
#9
2
Prev: #11
|
2.9 |
—
|
1,573 | 1.8% |
P
S
|
89,017 | $11,828,579 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SARO
STANDARDAERO IN...
|
Industrials | 5.23% | 5.90% |
#10
1
Prev: #9
|
4.1 |
—
|
39,937 | 10.9% |
P
S
|
407,435 | $10,524,046 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HMY
HARMONY GOLD MN...
|
Basic Materials | 5.09% | — |
#11
Prev: #—
|
5.5 |
—
|
666,735 | — |
NEW
|
666,735 | $10,247,717 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DHI
D R HORTON INC
|
Consumer Cyclical | 4.54% | 5.24% |
#12
Prev: #12
|
2.3 |
—
|
1,537 | 2.4% |
P
S
|
66,541 | $9,130,756 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BLDR
BUILDERS FIRSTS...
|
Industrials | 4.02% | 5.42% |
#13
3
Prev: #10
|
2.1 |
—
|
4,112 | 4.4% |
P
S
|
98,203 | $8,085,053 | 2018 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AMBP
ARDAGH METAL PA...
|
Consumer Cyclical | 3.78% | 3.37% |
#14
1
Prev: #13
|
4.0 |
—
|
408,602 | 27.8% |
P
S
|
1,878,082 | $7,606,233 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CCJ
CAMECO CORP
|
Energy | 2.29% | 2.17% |
#15
2
Prev: #17
|
1.9 |
—
|
no change | no change |
P
S
|
42,424 | $4,607,670 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ULCC
FRONTIER GROUP ...
|
Industrials | 1.67% | 2.51% |
#16
1
Prev: #15
|
1.7 |
—
|
no change | no change |
P
S
|
953,375 | $3,365,414 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SJT
SAN JUAN BASIN ...
|
Bond/Debt | 0.00% | 2.30% |
Sold All 😨
(Was: #16) |
0.0 |
—
|
-732,351 | -100.0% |
CLOSED
|
— | $— | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NXE
NEXGEN ENERGY L...
|
Energy | 0.00% | 2.77% |
Sold All 😨
(Was: #14) |
0.0 |
—
|
-538,042 | -100.0% |
CLOSED
|
— | $— | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-18 of 18 holdings