Portolan Capital Management, LLC
Position in CNR — Core Natural Resources, Inc.
CIK 1350290
BOSTON, MA
Position in CNR
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$24,824,780
+$13,297,061 QoQ
Shares Held
237,036
+82.0% QoQ
Ownership
0.470%
of shares outstanding
% of Portfolio
1.35%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2025
2 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in CNR Over Time
Shares Held
Position Value (USD)
Position in Thermal Coal
Energy · as of Mar 31, 2026Portolan Capital Management, LLC holds $24,824,780 across 1 Thermal Coal name. CNR ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CNR |
Core Natural Resources, Inc.
This page
|
237,036 | $24,824,780 |
All Filings in CNR
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2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $24,824,780 | 237,036 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $11,527,719 | 130,242 | Shares | Sole | 2026-02-17 | |
| No filing history on record for this holder in this stock. | ||||||