Mountain Lake Investment Management’s Core Natural Resources Inc CNR Stock Holding History

Mountain Lake Investment Management’s Portfolio CNR Stock Details CNR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-17,643	Closed	-$1.47M	–	28
2025 Q3	$1.47M	Buy	17,643 +1,877	+12%	+$141K	1.1%	23
2025 Q2	$1.1M	Buy	15,766 +4,266	+37%	+$303K	0.92%	22
2025 Q1	$887K	Buy	+11,500	New	+$971K	0.83%	23
2022 Q3	–	Sell	-84,185	Closed	-$4.16M	–	34
2022 Q2	$4.16M	Sell	84,185 -113,815	-57%	-$5.54M	3.56%	12
2022 Q1	$7.45M	Sell	198,000 -172,500	-47%	-$5M	4.5%	9
2021 Q4	$8.41M	Sell	370,500 -88,500	-19%	-$2.29M	4.02%	9
2021 Q3	$11.9M	Sell	459,000 -123,000	-21%	-$2.71M	5.17%	7
2021 Q2	$10.8M	Sell	582,000 -70,000	-11%	-$941K	5.24%	10
2021 Q1	$6.34M	Sell	652,000 -109,500	-14%	-$1.07M	3.55%	14
2020 Q4	$5.49M	Sell	761,500 -38,500	-5%	-$202K	3.62%	11
2020 Q3	$3.54M	Buy	800,000 +25,000	+3%	+$131K	2.4%	17
2020 Q2	$3.93M	Hold	775,000	–	–	2.83%	15
2020 Q1	$2.86M	Buy	775,000 +125,000	+19%	+$991K	2.78%	12
2019 Q4	$9.43M	Sell	650,000 -200,000	-24%	-$2.76M	7.12%	6
2019 Q3	$13.3M	Buy	850,000 +285,000	+50%	+$5.58M	6.72%	8
2019 Q2	$15M	Buy	565,000 +50,000	+10%	+$1.5M	7.06%	7
2019 Q1	$17.6M	Sell	515,000 -3,000	-0.6%	-$105K	6.46%	7
2018 Q4	$16.4M	Buy	518,000 +163,000	+46%	+$5.99M	9.01%	4
2018 Q3	$14.5M	Buy	355,000 +78,000	+28%	+$3.28M	7.32%	6
2018 Q2	$10.6M	Sell	277,000 -53,000	-16%	-$2.04M	5.38%	8
2018 Q1	$9.56M	Buy	330,000 +35,600	+12%	+$1.15M	4.96%	8
2017 Q4	$11.6M	Buy	+294,400	New	+$8.59M	4.16%	9

Other funds holding CNR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

DCM

DME Capital Management New York $3.19B AUM 23.22% 1-Year Est. Return

FFL

Flat Footed LLC Wilson, Wyoming $920M AUM 86.47% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Mountain Lake Investment Management's CNR Position: Q4 2025 in Review

Mountain Lake Investment Management sold out of Core Natural Resources Inc (CNR) in Q4 2025, closing a stake of 17,643 shares — an estimated $1.47M sold.

Mountain Lake Investment Management first reported a position in CNR in Q4 2017 and held it in 22 quarters. The position peaked at $17.6M in Q1 2019. 341 funds tracked by Wall St. Rank hold CNR as of Q4 2025.

Mountain Lake Investment Management reported no remaining Core Natural Resources Inc position as of Q4 2025 after selling out during the quarter.
Mountain Lake Investment Management sold 17,643 Core Natural Resources Inc shares in Q4 2025, an estimated $1.47M.
Mountain Lake Investment Management first reported a position in Core Natural Resources Inc in Q4 2017 and held it in 22 quarters.
Mountain Lake Investment Management's Core Natural Resources Inc position peaked at $17.6M in Q1 2019.
341 funds tracked by Wall St. Rank held Core Natural Resources Inc as of Q4 2025.

Based on Mountain Lake Investment Management's 13F filing for Q4 2025, filed 17 Feb 2026.