Black Stone Minerals, L.P. - Limited Partnership
US ˙ NYSE ˙ US09225M1018

SecurityBSM / Black Stone Minerals, L.P. - Limited Partnership
InstitutionMorgan Stanley
Latest Disclosed Ownership8,271,758 shares
Latest Disclosed Value $ 125,068,990
Morgan Stanley reports 16.38% increase in ownership of BSM / Black Stone Minerals, L.P. - Limited Partnership

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 8,271,758 shares of Black Stone Minerals, L.P. - Limited Partnership (US:BSM) valued at $125,068,981 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 7,107,673 shares of Black Stone Minerals, L.P. - Limited Partnership. This represents a change in shares of 16.38% during the quarter. The current value of the position is $114,812,001 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.

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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)
2026-05-15 2026-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 8,271,758 1,164,085 16.38 125,069 32.40 0.0075
2026-05-27 2025-12-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 7,107,673 2,582,823 57.08 94,461 58.87 0.0056
2026-02-13 2025-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 7,107,673 2,582,823 94,461 0.0056
2026-05-27 2025-09-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 4,524,850 648,031 16.72 59,457 17.25 0.0036
2025-11-14 2025-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,524,850 648,031 59,457 0.0036
2025-08-15 2025-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,876,819 -231,048 -5.62 50,709 -19.16 0.0033
2025-05-15 2025-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,107,867 -1,425,111 -25.76 62,727 -22.35 0.0045
2025-05-15 2024-12-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 5,532,978 1,136,610 25.85 80,781 21.69 0.0057
2025-02-14 2024-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 5,532,978 1,136,610 80,781 0.0057
2025-05-14 2024-09-30 13F/A-2 BLACK STONE MINERALS L P COM UNIT 09225M101 4,396,368 19,036 0.43 66,385 -3.22 0.0048
2025-02-14 2024-09-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 4,396,368 19,036 66,385 0.0048
2024-11-14 2024-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,396,368 19,036 66,385 0.0006
2025-05-14 2024-06-30 13F/A-2 BLACK STONE MINERALS L P COM UNIT 09225M101 4,377,332 -296,696 -6.35 68,593 -8.16 0.0053
2024-10-17 2024-06-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 4,377,332 -296,696 68,593 0.0053
2024-08-14 2024-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,377,332 -296,696 68,593 0.0053
2024-10-17 2024-03-31 13F/A-2 BLACK STONE MINERALS L P COM UNIT 09225M101 4,674,028 487,923 11.66 74,691 11.79 0.0060
2024-08-16 2024-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 4,674,028 487,923 74,691 0.0007
2024-05-15 2024-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,674,028 487,923 74,691 0.0060
2024-08-16 2023-12-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 4,186,105 -66,973 -1.57 66,810 -8.83 0.0059
2024-02-13 2023-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,186,105 -66,973 66,810 0.0059
2023-11-15 2023-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,253,078 -255,364 -5.66 73,281 1.91 0.0075
2023-08-14 2023-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,508,442 -91,828 -2.00 71,910 -0.37 0.0071
2023-05-15 2023-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,600,270 595,569 14.87 72,178 6.84 0.0077
2023-02-14 2022-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 4,004,701 2,369,656 144.93 67,559 164.02 0.0077
2022-11-14 2022-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,635,045 -462,664 -22.06 25,589 -10.89 0.0035
2022-10-27 2022-06-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 2,097,709 -273,837 -11.55 28,717 -10.04 0.0037
2022-08-15 2022-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,097,709 -273,837 28,717 0.0008
2022-10-27 2022-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 2,371,546 -744,399 -23.89 31,921 -0.83 0.0043
2022-05-13 2022-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,371,546 -744,399 31,921 0.0043
2022-02-14 2021-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,115,945 -18,335 -0.58 32,188 -14.77 0.0040
2021-11-15 2021-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,134,280 -23,100 -0.73 37,768 11.27 0.0051
2021-08-23 2021-06-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 3,157,380 918,817 41.04 33,942 73.87 0.0045
2021-08-16 2021-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,157,380 918,817 33,942 0.0009
2021-05-17 2021-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,238,563 -847,830 -27.47 19,521 -5.32 0.0029
2021-02-16 2020-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,086,393 -480,207 -13.46 20,617 -5.86 0.0032
2020-11-13 2020-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,566,600 290,717 8.87 21,900 2.85 0.0042
2020-08-14 2020-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,275,883 100,284 3.16 21,294 43.28 0.0047
2020-05-26 2020-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 3,175,599 671,509 26.82 14,862 -53.34 0.0040
2020-05-15 2020-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 3,175,599 671,509 14,862 1,141.7114
2020-02-14 2019-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,504,090 1,709,567 215.17 31,851 181.54 0.0074
2019-11-14 2019-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 794,523 146,171 22.55 11,313 12.57 0.0030
2019-08-14 2019-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 648,352 121,276 23.01 10,050 8.10 0.0027
2019-05-15 2019-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 527,076 -106,647 -16.83 9,297 -5.24 0.0026
2019-02-14 2018-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 633,723 -1,076,103 -62.94 9,811 -68.49 0.0029
2019-04-23 2018-09-30 13F/A-2 BLACK STONE MINERALS L P COM UNIT 09225M101 1,709,826 -81,458 -4.55 31,137 -5.99 0.0078
2018-11-20 2018-09-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 1,709,826 0 31,137 0.0078
2018-11-14 2018-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,709,826 -81,458 31,137
2019-04-23 2018-06-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 1,791,284 -16,045 -0.89 33,121 10.73 0.0089
2018-08-14 2018-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,791,284 -16,045 33,121
2019-04-23 2018-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 1,807,329 -144,599 -7.41 29,912 -14.58 0.0083
2018-05-14 2018-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,807,329 -144,599 29,912
2019-04-23 2017-12-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 1,951,928 -349,979 -15.20 35,019 -12.27 0.0096
2018-02-14 2017-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,951,928 -349,979 35,019
2017-11-14 2017-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,301,907 -610,062 -20.95 39,915 -13.03 0.0120
2017-08-11 2017-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,911,969 -61,094 -2.05 45,893 -6.50 0.0139
2017-05-22 2017-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 2,973,063 962,824 47.90 49,086 30.02 0.0151
2017-05-12 2017-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,973,063 49,086
2017-02-22 2016-12-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 2,010,239 368,940 22.48 37,752 29.15 0.0124
2017-02-13 2016-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 2,010,239 37,752
2016-11-10 2016-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,641,299 584,503 55.31 29,231 78.44 0.0100
2016-08-12 2016-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,056,796 -62,656 -5.60 16,381 4.44 0.0059
2016-05-12 2016-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,119,452 -626,588 -35.89 15,684 -37.75 0.0060
2016-02-09 2015-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,746,040 -39,338 -2.20 25,195 2.26 0.0091
2016-02-08 2015-09-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 1,785,378 210,935 13.40 24,638 -9.13 0.0091
2015-11-09 2015-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,785,378 24,638
2015-08-12 2015-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 1,574,443 1,574,443 27,112 0.0094
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.