核心自然資源公司
US ˙ NYSE ˙ US20854L1089

SecurityCNR / Core Natural Resources, Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership7,422,561 shares
Latest Disclosed Value $ 777,364,864
BlackRock, Inc. reports 0.40% increase in ownership of CNR / Core Natural Resources, Inc.

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 7,422,561 shares of Core Natural Resources, Inc. (US:CNR) valued at $777,364,814 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,393,330 shares of Core Natural Resources, Inc.. This represents a change in shares of 0.40% during the quarter. The current value of the position is $734,165,509 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F CORE NATURAL RESOURCES COM SHS 218937100 7,422,561 29,231 0.40 777,365 18.79 0.0010
2026-02-12 2025-12-31 13F CORE NATURAL RESOURCES COM SHS 218937100 7,393,330 92,751 1.27 654,384 7.37 0.0111
2025-11-12 2025-09-30 13F CORE NATURAL RESOURCES COM SHS 218937100 7,300,579 -53,789 -0.73 609,452 18.83 0.0107
2025-08-12 2025-06-30 13F CORE NATURAL RESOURCES COM SHS 218937100 7,354,368 -322,596 -4.20 512,894 -13.35 0.0098
2025-05-02 2025-03-31 13F CORE NATURAL RESOURCES COM SHS 218937100 7,676,964 3,296,039 75.24 591,894 451.69 0.0124
2022-08-12 2022-06-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 4,380,925 706,652 19.23 107,288 20.06 0.0034
2022-05-12 2022-03-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,674,273 -441,221 -10.72 89,361 24.50 0.0024
2022-02-10 2021-12-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 4,115,494 217,700 5.59 71,775 26.04 0.0018
2021-11-09 2021-09-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,897,794 61,930 1.61 56,947 -18.34 0.0016
2021-08-11 2021-06-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,835,864 383,971 11.12 69,737 44.00 0.0019
2021-05-07 2021-03-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,451,893 204,941 6.31 48,430 60.73 0.0014
2021-02-05 2020-12-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,246,952 381,685 13.32 30,131 31.78 0.0010
2020-11-06 2020-09-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 2,865,267 -293,197 -9.28 22,864 19.45 0.0008
2020-08-14 2020-06-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,158,464 -135,637 -4.12 19,141 27.43 0.0008
2020-05-01 2020-03-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,294,101 43,503 1.34 15,021 -45.70 0.0007
2020-02-13 2019-12-31 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,250,598 18,146 0.56 27,662 41.45 0.0011
2019-11-08 2019-09-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,232,452 104,141 3.33 19,556 7.22 0.0008
2019-08-22 2019-06-30 13F/A-1 CORNERSTONE BLDG BRANDS COM 21925D109 3,128,311 3,128,311 18,239 0.0008
2019-08-13 2019-06-30 13F CORNERSTONE BLDG BRANDS COM 21925D109 3,128,311 18,239
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.