Core Natural Resources (CNR)
Core Natural Resources on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as silver ores.
1.8M
Short interest
settlement 2026-09-30
3.3
Days to cover
-1.1 days vs prior
62.8%
Short share of volume
2026-10-23
366
Fails to deliver
settlement 2026-09-30
Thu 5 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in CNR is 1,814,892 shares, down 30 shares over the last month. Over the last 48 readings it ranged from 1,517,966 shares (31 July 2026) to 9,818,922 shares (31 May 2022). The latest reading sits at the bottom of that range. At the reported average volume of 559K shares a day that is 3.3 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 1,814,892 | -4.6% | 558,762 | 3.25 |
| 2026-09-15 | 1,902,166 | +4.8% | 436,389 | 4.36 |
| 2026-08-31 | 1,814,922 | +15.1% | 536,224 | 3.38 |
| 2026-08-14 | 1,577,056 | +3.9% | 581,543 | 2.71 |
| 2026-07-31 | 1,517,966 | -9.7% | 536,865 | 2.83 |
| 2026-07-15 | 1,680,646 | +4.6% | 496,725 | 3.38 |
| 2026-06-30 | 1,606,783 | +2.0% | 854,569 | 1.88 |
| 2026-06-15 | 1,574,895 | -24.6% | 668,821 | 2.35 |
| 2026-05-29 | 2,089,229 | +11.2% | 671,792 | 3.11 |
| 2026-05-15 | 1,879,072 | -10.5% | 820,334 | 2.29 |
| 2026-04-30 | 2,099,291 | +27.8% | 785,899 | 2.67 |
| 2026-04-15 | 1,642,776 | -15.1% | 900,144 | 1.83 |
| 2026-03-31 | 1,934,922 | -10.3% | 1,350,876 | 1.43 |
| 2026-03-13 | 2,156,990 | +4.0% | 1,204,687 | 1.79 |
| 2026-02-27 | 2,073,470 | +3.8% | 704,391 | 2.94 |
| 2026-02-13 | 1,998,495 | -19.4% | 841,107 | 2.38 |
| 2026-01-30 | 2,478,751 | -6.4% | 698,949 | 3.55 |
| 2026-01-15 | 2,649,266 | -6.5% | 698,739 | 3.79 |
| 2025-12-31 | 2,833,141 | -8.4% | 683,524 | 4.14 |
| 2025-12-15 | 3,092,075 | +1.8% | 710,370 | 4.35 |
| 2025-11-28 | 3,036,124 | +5.3% | 831,259 | 3.65 |
| 2025-11-14 | 2,884,809 | +16.1% | 994,459 | 2.90 |
| 2025-10-31 | 2,485,212 | -24.0% | 787,762 | 3.15 |
| 2025-10-15 | 3,270,600 | +13.1% | 1,327,546 | 2.46 |
| 2025-09-30 | 2,891,685 | +15.2% | 765,404 | 3.78 |
| 2025-09-15 | 2,510,367 | +1.6% | 555,480 | 4.52 |
| 2025-08-29 | 2,469,942 | +0.6% | 645,532 | 3.83 |
| 2025-08-15 | 2,456,456 | -14.8% | 847,743 | 2.90 |
| 2025-07-31 | 2,884,006 | -10.1% | 847,624 | 3.40 |
| 2025-07-15 | 3,208,801 | -9.3% | 876,651 | 3.66 |
| 2025-06-30 | 3,538,898 | +4.8% | 1,045,318 | 3.39 |
| 2025-06-13 | 3,376,418 | +0.9% | 877,353 | 3.85 |
| 2025-05-30 | 3,345,355 | +26.5% | 671,983 | 4.98 |
| 2025-05-15 | 2,644,917 | +3.3% | 1,133,853 | 2.33 |
| 2025-04-30 | 2,561,048 | -2.1% | 487,148 | 5.26 |
| 2025-04-15 | 2,615,490 | -6.9% | 1,187,402 | 2.20 |
| 2025-03-31 | 2,808,248 | -19.2% | 980,937 | 2.86 |
| 2025-03-14 | 3,476,924 | +10.1% | 1,056,224 | 3.29 |
| 2025-02-28 | 3,156,807 | -10.9% | 1,383,485 | 2.28 |
| 2025-02-14 | 3,543,194 | +4.6% | 816,655 | 4.34 |
| 2025-01-31 | 3,386,224 | -47.8% | 1,018,930 | 3.32 |
| 2025-01-15 | 6,484,628 | +153.9% | 1,468,978 | 4.41 |
| 2022-07-15 | 6,741,880 | -23.8% | 1,267,332 | 5.32 |
| 2022-06-30 | 8,848,121 | +9.0% | 1,867,067 | 4.74 |
| 2022-06-15 | 8,114,412 | -17.4% | 1,681,171 | 4.83 |
| 2022-05-31 | 9,818,922 | +0.5% | 1,610,014 | 6.10 |
| 2022-05-13 | 9,768,909 | +9.0% | 1,808,964 | 5.40 |
| 2022-04-29 | 8,961,485 | +0.9% | 1,729,939 | 5.18 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of CNR volume is 62.8%, down 8.0 points over the last five sessions. Over the last 30 readings it ranged from 41.5% (8 October 2026) to 76.6% (2 October 2026). The latest reading is in line with the 30-session average of 60.8%, on 164K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 103K | 164K | 62.8% | 0 |
| 2026-10-22 | 124K | 188K | 66.2% | 77 |
| 2026-10-21 | 96K | 153K | 62.6% | 1,300 |
| 2026-10-20 | 123K | 189K | 65.2% | 0 |
| 2026-10-19 | 87K | 172K | 50.6% | 0 |
| 2026-10-16 | 97K | 137K | 70.8% | 0 |
| 2026-10-15 | 85K | 143K | 59.1% | 20 |
| 2026-10-14 | 116K | 172K | 67.5% | 262 |
| 2026-10-13 | 57K | 95K | 60.1% | 0 |
| 2026-10-12 | 87K | 180K | 48.2% | 0 |
| 2026-10-09 | 69K | 160K | 43.1% | 0 |
| 2026-10-08 | 81K | 195K | 41.5% | 0 |
| 2026-10-07 | 85K | 134K | 63.5% | 0 |
| 2026-10-06 | 66K | 112K | 58.9% | 0 |
| 2026-10-05 | 132K | 221K | 59.7% | 0 |
| 2026-10-02 | 122K | 160K | 76.6% | 0 |
| 2026-10-01 | 164K | 266K | 61.6% | 0 |
| 2026-09-30 | 83K | 129K | 64.4% | 4 |
| 2026-09-29 | 73K | 127K | 57.3% | 3 |
| 2026-09-28 | 65K | 107K | 61.2% | 0 |
| 2026-09-25 | 68K | 127K | 53.5% | 0 |
| 2026-09-24 | 98K | 200K | 49.1% | 189 |
| 2026-09-23 | 72K | 117K | 61.4% | 0 |
| 2026-09-22 | 87K | 158K | 55.2% | 0 |
| 2026-09-21 | 59K | 119K | 49.8% | 11 |
| 2026-09-18 | 94K | 148K | 63.9% | 322 |
| 2026-09-17 | 137K | 183K | 75.2% | 0 |
| 2026-09-16 | 137K | 190K | 72.1% | 0 |
| 2026-09-15 | 127K | 178K | 71.2% | 132 |
| 2026-09-14 | 104K | 142K | 73.0% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in CNR is 366 shares, down 2,303 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (30 March 2026) to 22,000 shares (7 May 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 366 | $86.50 | $32K |
| 2026-08-28 | 2,669 | $101.66 | $271K |
| 2026-08-27 | 1,519 | $98.09 | $149K |
| 2026-08-07 | 30 | $89.98 | $3K |
| 2026-08-06 | 819 | $83.68 | $69K |
| 2026-08-04 | 366 | $80.25 | $29K |
| 2026-07-29 | 1,995 | $79.74 | $159K |
| 2026-07-20 | 257 | $83.02 | $21K |
| 2026-07-17 | 20 | $83.59 | $2K |
| 2026-07-01 | 13 | $80.02 | $1K |
| 2026-06-26 | 487 | $82.19 | $40K |
| 2026-06-03 | 17 | $94.57 | $2K |
| 2026-06-02 | 11,106 | $93.17 | $1.0M |
| 2026-05-29 | 21,516 | $93.95 | $2.0M |
| 2026-05-26 | 1,466 | $84.07 | $123K |
| 2026-05-22 | 987 | $84.00 | $83K |
| 2026-05-13 | 16,531 | $85.89 | $1.4M |
| 2026-05-07 | 22,000 | $87.77 | $1.9M |
| 2026-05-04 | 237 | $87.02 | $21K |
| 2026-04-21 | 81 | $85.34 | $7K |
| 2026-04-20 | 76 | $85.97 | $7K |
| 2026-04-14 | 115 | $89.70 | $10K |
| 2026-04-07 | 8,253 | $104.05 | $859K |
| 2026-04-06 | 8,142 | $104.25 | $849K |
| 2026-04-02 | 1 | $101.39 | $101 |
| 2026-04-01 | 6,104 | $104.73 | $639K |
| 2026-03-31 | 1 | $110.18 | $110 |
| 2026-03-30 | 1 | $113.23 | $113 |
| 2026-03-16 | 33 | $98.89 | $3K |
| 2026-03-12 | 4,547 | $95.80 | $436K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for CNR in the last 90 days. The most recent filings are listed below. Latest filing: Doheny Edward L II (Director) on 2026-04-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-04-30 | Doheny Edward L II | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2026-04-30 | Keating Ronald C | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2026-03-24 | Brock James A | Executive Chair and CEO | Gift | 24K | $0.00 | $0 | 291K |
| 2026-03-24 | Brock James A | Executive Chair and CEO | Gift | 24K | $0.00 | $0 | 0 |
| 2026-03-19 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 5K | $110.62 | $553K | 54K |
| 2026-03-19 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 10K | $105.00 | $1.1M | 59K |
| 2026-03-18 | Brock James A | Executive Chair and CEO | Sell | 41K | $101.15 | $4.1M | 100K |
| 2026-03-17 | Rothka John | Chief Accounting Officer | Sell | 1K | $97.66 | $98K | 5K |
| 2026-03-10 | Rothka John | Chief Accounting Officer | Sell | 4K | $91.62 | $348K | 6K |
| 2026-03-10 | NAVARRE RICHARD A | Director | Sell | 6K | $91.70 | $550K | 18K |
| 2026-02-18 | Brock James A | Executive Chair and CEO | Tax withholding | 3K | $88.96 | $263K | 271K |
| 2026-02-18 | Rothka John | Chief Accounting Officer | Tax withholding | 79 | $88.96 | $7K | 10K |
| 2026-02-18 | Thakkar Miteshkumar | President & CFO | Tax withholding | 1K | $88.96 | $109K | 62K |
| 2026-02-18 | Thakkar Miteshkumar | President & CFO | Tax withholding | 806 | $88.96 | $72K | 63K |
| 2026-02-18 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Tax withholding | 746 | $88.96 | $66K | 69K |
| 2026-02-18 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Tax withholding | 497 | $88.96 | $44K | 69K |
| 2026-02-18 | Schuller George John JR | SVP, Chief Operating Officer | Tax withholding | 1K | $88.96 | $95K | 27K |
| 2026-02-18 | Schuller George John JR | SVP, Chief Operating Officer | Tax withholding | 713 | $88.96 | $63K | 28K |
| 2026-02-18 | Salvatori Kurt R. | SVP, Chief Admin. Officer | Tax withholding | 689 | $88.96 | $61K | 25K |
| 2026-02-18 | Salvatori Kurt R. | SVP, Chief Admin. Officer | Tax withholding | 459 | $88.96 | $41K | 25K |
| 2026-02-18 | Rothka John | Chief Accounting Officer | Tax withholding | 97 | $88.96 | $9K | 10K |
| 2026-02-18 | Slone Deck | SVP, Strategy & Public Policy | Tax withholding | 731 | $88.96 | $65K | 70K |
| 2026-02-18 | Slone Deck | SVP, Strategy & Public Policy | Tax withholding | 487 | $88.96 | $43K | 71K |
| 2026-02-18 | Brock James A | Executive Chair and CEO | Tax withholding | 4K | $88.96 | $395K | 267K |
| 2026-02-18 | Brock James A | Executive Chair and CEO | Tax withholding | 66K | $88.96 | $5.9M | 271K |
| 2026-02-18 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Tax withholding | 464 | $88.96 | $41K | 16K |
| 2026-02-18 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Tax withholding | 310 | $88.96 | $28K | 17K |
| 2026-02-17 | KRIEGSHAUSER PATRICK A | Director | Grant | 2K | $0.00 | $0 | 25K |
| 2026-02-17 | Thakkar Miteshkumar | President & CFO | Grant | 9K | $0.00 | $0 | 64K |
| 2026-02-17 | NAVARRE RICHARD A | Director | Grant | 2K | $0.00 | $0 | 24K |
| 2026-02-17 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Grant | 5K | $0.00 | $0 | 70K |
| 2026-02-17 | Perera Valli | Director | Grant | 2K | $0.00 | $0 | 9K |
| 2026-02-17 | Schuller George John JR | SVP, Chief Operating Officer | Grant | 8K | $0.00 | $0 | 29K |
| 2026-02-17 | Salvatori Kurt R. | SVP, Chief Admin. Officer | Grant | 5K | $0.00 | $0 | 26K |
| 2026-02-17 | Rothka John | Chief Accounting Officer | Grant | 760 | $0.00 | $0 | 10K |
| 2026-02-17 | Platt Joseph P JR | Director | Grant | 2K | $0.00 | $0 | 41K |
| 2026-02-17 | Slone Deck | SVP, Strategy & Public Policy | Grant | 5K | $0.00 | $0 | 71K |
| 2026-02-17 | KOEPPEL HOLLY K | Director | Grant | 2K | $0.00 | $0 | 15K |
| 2026-02-17 | Brock James A | Executive Chair and CEO | Grant | 21K | $0.00 | $0 | 274K |
| 2026-02-17 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Grant | 4K | $0.00 | $0 | 17K |
| 2025-11-13 | Brock James A | Executive Chair and CEO | Gift | 141K | $0.00 | $0 | 141K |
| 2025-11-13 | Brock James A | Executive Chair and CEO | Gift | 141K | $0.00 | $0 | 24K |
| 2025-10-09 | Rothka John | Chief Accounting Officer | Sell | 1K | $100.00 | $100K | 9K |
| 2025-10-08 | Rothka John | Chief Accounting Officer | Sell | 1K | $95.00 | $95K | 10K |
| 2025-10-03 | Rothka John | Chief Accounting Officer | Sell | 3K | $90.00 | $225K | 11K |
| 2025-09-25 | NAVARRE RICHARD A | Director | Sell | 5K | $82.20 | $411K | 22K |
| 2025-09-17 | KRIEGSHAUSER PATRICK A | Director | Sell | 3K | $77.07 | $235K | 23K |
| 2025-05-20 | Brock James A | Executive Chair | Gift | 165K | $0.00 | $0 | 371K |
| 2025-05-20 | Brock James A | Executive Chair | Gift | 165K | $0.00 | $0 | 165K |
| 2025-05-09 | Lang Paul A | Chief Executive Officer | Buy | 8K | $66.95 | $502K | 341K |
| 2025-03-31 | KOEPPEL HOLLY K | Director | Sell | 5K | $74.97 | $358K | 17K |
| 2025-03-31 | KOEPPEL HOLLY K | Director | Sell | 4K | $75.68 | $306K | 13K |
| 2025-02-18 | Lang Paul A | Chief Executive Officer | Grant | 20K | $0.00 | $0 | 334K |
| 2025-02-18 | Thakkar Miteshkumar | President & CFO | Grant | 8K | $0.00 | $0 | 55K |
| 2025-02-18 | Brock James A | Executive Chair | Grant | 20K | $0.00 | $0 | 516K |
| 2025-02-18 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Grant | 3K | $0.00 | $0 | 13K |
| 2025-02-18 | NAVARRE RICHARD A | Director | Grant | 2K | $0.00 | $0 | 27K |
| 2025-02-18 | Perera Valli | Director | Grant | 2K | $0.00 | $0 | 6K |
| 2025-02-18 | KOEPPEL HOLLY K | Director | Grant | 2K | $0.00 | $0 | 22K |
| 2025-02-18 | KRIEGSHAUSER PATRICK A | Director | Grant | 2K | $0.00 | $0 | 26K |
| 2025-02-18 | Pan Cassandra Chia-Wei | Director | Grant | 2K | $0.00 | $0 | 8K |
| 2025-02-18 | Salvatori Kurt R. | SVP, Chief Admin. Officer | Grant | 5K | $0.00 | $0 | 16K |
| 2025-02-18 | Slone Deck | SVP, Strategy & Public Policy | Grant | 5K | $0.00 | $0 | 66K |
| 2025-02-18 | Schuller George John JR | SVP, Chief Operating Officer | Grant | 7K | $0.00 | $0 | 14K |
| 2025-02-18 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Grant | 5K | $0.00 | $0 | 60K |
| 2025-02-18 | Platt Joseph P JR | Director | Grant | 2K | $0.00 | $0 | 39K |
| 2025-02-18 | Platt Joseph P JR | Director | Grant | 2K | $0.00 | $0 | 37K |
| 2025-02-18 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Grant | 5K | $0.00 | $0 | 65K |
| 2025-02-18 | Schuller George John JR | SVP, Chief Operating Officer | Grant | 7K | $0.00 | $0 | 22K |
| 2025-02-18 | Slone Deck | SVP, Strategy & Public Policy | Grant | 5K | $0.00 | $0 | 61K |
| 2025-02-18 | Rothka John | Chief Accounting Officer | Grant | 828 | $0.00 | $0 | 14K |
| 2025-02-18 | Salvatori Kurt R. | SVP, Chief Admin. Officer | Grant | 5K | $0.00 | $0 | 21K |
| 2025-02-18 | Pan Cassandra Chia-Wei | Director | Grant | 2K | $0.00 | $0 | 6K |
| 2025-02-18 | KRIEGSHAUSER PATRICK A | Director | Grant | 2K | $0.00 | $0 | 25K |
| 2025-02-18 | KOEPPEL HOLLY K | Director | Grant | 2K | $0.00 | $0 | 20K |
| 2025-02-18 | Perera Valli | Director | Grant | 2K | $0.00 | $0 | 8K |
| 2025-02-18 | NAVARRE RICHARD A | Director | Grant | 2K | $0.00 | $0 | 25K |
| 2025-02-18 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Grant | 3K | $0.00 | $0 | 9K |
| 2025-02-18 | Brock James A | Executive Chair | Grant | 20K | $0.00 | $0 | 536K |
| 2025-02-18 | Thakkar Miteshkumar | President & CFO | Grant | 8K | $0.00 | $0 | 46K |
| 2025-02-18 | Lang Paul A | Chief Executive Officer | Grant | 20K | $0.00 | $0 | 313K |
| 2025-01-14 | KOEPPEL HOLLY K | Director | Grant | 19K | $0.00 | $0 | 19K |
| 2025-01-14 | Slone Deck | SVP, Strategy & Public Policy | Grant | 56K | $0.00 | $0 | 56K |
| 2025-01-14 | Rothka John | Chief Accounting Officer | Grant | 515 | $0.00 | $0 | 14K |
| 2025-01-14 | Rothka John | Chief Accounting Officer | Tax withholding | 147 | $101.95 | $15K | 14K |
| 2025-01-14 | Rothka John | Chief Accounting Officer | Grant | 492 | $0.00 | $0 | 14K |
| 2025-01-14 | Rothka John | Chief Accounting Officer | Tax withholding | 140 | $101.95 | $14K | 13K |
| 2025-01-14 | Rothka John | Chief Accounting Officer | Tax withholding | 849 | $101.95 | $87K | 13K |
| 2025-01-14 | Thakkar Miteshkumar | President & CFO | Grant | 4K | $0.00 | $0 | 46K |
| 2025-01-14 | Thakkar Miteshkumar | President & CFO | Tax withholding | 2K | $101.95 | $175K | 44K |
| 2025-01-14 | Thakkar Miteshkumar | President & CFO | Tax withholding | 2K | $101.95 | $207K | 47K |
| 2025-01-14 | Thakkar Miteshkumar | President & CFO | Tax withholding | 9K | $101.95 | $904K | 38K |
| 2025-01-14 | Thakkar Miteshkumar | President & CFO | Grant | 5K | $0.00 | $0 | 49K |
| 2025-01-14 | Schuller George John JR | SVP, Chief Operating Officer | Grant | 7K | $0.00 | $0 | 7K |
| 2025-01-14 | KRIEGSHAUSER PATRICK A | Director | Grant | 23K | $0.00 | $0 | 23K |
| 2025-01-14 | Brock James A | Executive Chair | Grant | 13K | $0.00 | $0 | 527K |
| 2025-01-14 | Brock James A | Executive Chair | Tax withholding | 32K | $101.95 | $3.2M | 496K |
| 2025-01-14 | Brock James A | Executive Chair | Tax withholding | 5K | $101.95 | $539K | 527K |
| 2025-01-14 | Brock James A | Executive Chair | Grant | 12K | $0.00 | $0 | 532K |
| 2025-01-14 | Brock James A | Executive Chair | Tax withholding | 6K | $101.95 | $615K | 521K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON10 Form 144 notices on file for CNR worth $9.0M at the prices reported; 0 in the last 90 days worth $0. Latest: THE ROSEMARY L. KLEIN REV TRUST filed on 2026-03-19 to sell 15,000 shares ($1.6M) from 2026-03-19.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-03-19 | THE ROSEMARY L. KLEIN REV TRUSTOfficer | 15K | $1.6M | 0.030% | 2026-03-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-17 | Rothka JohnOfficer | 1K | $98K | 0.002% | 2026-03-17 | Stifel Nicolaus & Company Inc |
| 2026-03-10 | Rothka JohnOfficer | 4K | $349K | 0.007% | 2026-03-10 | Stifel Nicolaus & Company Inc |
| 2026-03-10 | Richard A NavarreDirector | 6K | $550K | 0.012% | 2026-03-10 | UBS Financial Services Inc |
| 2025-12-18 | Lang Paul AFormer Officer and Director | 60K | $5.4M | 0.117% | 2025-12-18 | Wells Fargo Clearing Services |
| 2025-10-09 | JOHN ROTHKAOfficer | 1K | $98K | 0.002% | 2025-10-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-08 | JOHN ROTHKAOfficer | 1K | $93K | 0.002% | 2025-10-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-03 | JOHN ROTHKAOfficer | 3K | $215K | 0.005% | 2025-10-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-25 | RICHARD NAVARREDirector | 5K | $411K | 0.010% | 2025-09-25 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-17 | PATRICK A. KRIEGSHAUSERDirector | 3K | $235K | 0.006% | 2025-09-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON6 holders report 5% or more of CNR in their latest filing, all on Schedule 13G (passive). The largest reported stake is STATE STREET CORPORATION at 7.8% of the class (3,977,324 shares), filed 2026-05-12 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-06 | 13G/Ano. 4 | Abigail P. Johnsonindividual | 2.9M | 5.7% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 4 | FMR LLCparent holding company | 2.9M | 5.7% | 2026-06-30 |
| 2026-05-12 | 13G | STATE STREET CORPORATIONparent holding company | 4.0M | 7.8% | 2026-03-31 |
| 2026-05-12 | 13G | SSGA FUNDS MANAGEMENT, INC.investment adviser | 2.9M | 5.8% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 3.0M | 5.9% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 2.6M | 5.1% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 7 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding CNR at their latest 13F. JSON6 of the 30 tracked managers held CNR at their latest 13F, $229.0M in total at quarter-end prices. Greenlight Capital (DME Capital) is the largest at $182.7M (4.7% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Greenlight Capital (DME Capital) | 2026-06-30 | 2.3M | $182.7M | 4.67% | +425K |
| Millennium Management | 2026-06-30 | 369K | $29.5M | 0.01% | -80K |
| AQR Capital Management | 2026-06-30 | 175K | $14.0M | 0.00% | +166K |
| D. E. Shaw & Co. | 2026-06-30 | 21K | $1.7M | 0.00% | +8K |
| Point72 Asset Management | 2026-06-30 | 9K | $709K | 0.00% | -223K |
| Renaissance Technologies | 2026-06-30 | 5K | $432K | 0.00% | -1K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) Core Natural Resources reported revenue of $1.14B, up 3.5% from the same quarter a year earlier, and net income of $126.5M (2.51 diluted EPS). In FY 2025 it generated $305.8M of operating cash flow and spent $224.3M on buybacks and $26.3M on dividends.
- Cash
- $473.2M
- Equity
- $3.72B
- Total assets
- $6.12B
- Shares outstanding
- 49,636,257
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $1.14B | $126.5M | 11.1% | 2.51 |
| Q1 FY 2026 | 2026-03-31 | $1.08B | $21.0M | 1.9% | 0.41 |
| Q4 FY 2025derived | 2025-12-31 | $1.04B | -$79.0M | -7.6% | n/a |
| Q3 FY 2025 | 2025-09-30 | $1.00B | $31.6M | 3.2% | 0.61 |
| Q2 FY 2025 | 2025-06-30 | $1.10B | -$36.6M | -3.3% | -0.70 |
| Q1 FY 2025 | 2025-03-31 | $1.02B | -$69.3M | -6.8% | -1.38 |
| Q4 FY 2024derived | 2024-12-31 | $573.6M | $30.8M | 5.4% | n/a |
| Q3 FY 2024 | 2024-09-30 | $553.4M | $95.6M | 17.3% | 3.22 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $4.16B | -$153.2M | $305.8M | $284.6M | $224.3M | $26.3M |
| FY 2024 | 2024-12-31 | $2.16B | $286.4M | $476.4M | $178.0M | $70.9M | $15.9M |
| FY 2023 | 2023-12-31 | $2.51B | $655.9M | $857.9M | $167.8M | $399.4M | $75.5M |
| FY 2022 | 2022-12-31 | $2.28B | $467.0M | $651.0M | $171.5M | $0 | $71.5M |
| FY 2021 | 2021-12-31 | $1.26B | $34.1M | $305.6M | $132.8M | $0 | $0 |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-31 from the cover page.
What this page is
Core Natural Resources in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Core Natural Resources (CNR), SEC CIK 1710366, listed on NYSE, classified by the SEC as silver ores. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-30.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-03-19.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-06.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-04-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 1710366Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of CNR is sold short?
1,814,892 shares were held short at the 2026-09-30 settlement, 3.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is CNR's daily short volume?
On 2026-10-23, 102,763 of the 163,659 CNR shares reported to FINRA were sold short, 62.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does CNR have fails to deliver?
The SEC's latest file shows 366 CNR shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are CNR insiders buying or selling?
No open-market insider trades were reported for CNR in the last 90 days. The most recent filings are listed below. Latest filing: Doheny Edward L II (Director) on 2026-04-30.
Have CNR insiders filed to sell?
10 Form 144 notices on file for CNR worth $9.0M at the prices reported; 0 in the last 90 days worth $0. Latest: THE ROSEMARY L. KLEIN REV TRUST filed on 2026-03-19 to sell 15,000 shares ($1.6M) from 2026-03-19.
Who owns 5% or more of CNR?
6 holders report 5% or more of CNR in their latest filing, all on Schedule 13G (passive). The largest reported stake is STATE STREET CORPORATION at 7.8% of the class (3,977,324 shares), filed 2026-05-12 for an event on 2026-03-31.
What did CNR report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Core Natural Resources reported revenue of $1.14B, up 3.5% from the same quarter a year earlier, and net income of $126.5M (2.51 diluted EPS). In FY 2025 it generated $305.8M of operating cash flow and spent $224.3M on buybacks and $26.3M on dividends.
Which tracked 13F managers own CNR?
6 of the 30 tracked 13F managers held CNR shares at their latest filing, $229.0M in all. The largest: David Einhorn's Greenlight Capital (DME Capital) (2.3M shares, $182.7M), Izzy Englander's Millennium Management (369K shares, $29.5M), Cliff Asness's AQR Capital Management (175K shares, $14.0M), D. E. Shaw & Co. (21K shares, $1.7M), Steve Cohen's Point72 Asset Management (9K shares, $709K), Renaissance Technologies (5K shares, $432K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.