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

SecurityBSM / Black Stone Minerals, L.P. - Limited Partnership
InstitutionGruss & Co., LLC
Latest Disclosed Ownership71,016 shares
Latest Disclosed Value $ 1,073,762
Gruss & Co., LLC ownership in BSM / Black Stone Minerals, L.P. - Limited Partnership

On May 5, 2026 - Gruss & Co., LLC filed a 13F-HR form disclosing ownership of 71,016 shares of Black Stone Minerals, L.P. - Limited Partnership (US:BSM) valued at $1,073,762 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 71,016 shares of Black Stone Minerals, L.P. - Limited Partnership. This represents a change in shares of 0.00% during the quarter. The current value of the position is $988,543 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)
2026-05-05 2026-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 0 0.00 1,074 13.79 2.5082
2026-02-10 2025-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 0 0.00 944 1.07 2.0752
2025-11-06 2025-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 0 0.00 933 0.54 2.4320
2025-08-05 2025-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 0 0.00 929 -14.39 4.3414
2025-05-08 2025-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 0 0.00 1,084 4.63 4.7279
2025-02-06 2024-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 71,016 10,405 17.17 1,037 13.22 4.4266
2024-10-16 2024-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 915 -3.58 7.2241
2024-08-08 2024-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 950 -1.96 5.1515
2024-05-09 2024-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 969 0.10 5.3475
2024-01-26 2023-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 967 -7.38 7.4860
2023-11-13 2023-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 1,044 8.07 8.8370
2023-08-03 2023-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 0 0.00 967 1.68 5.8599
2023-05-12 2023-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 60,611 -23,852 -28.24 951 -33.29 6.0176
2023-02-10 2022-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 84,463 -12,400 -12.80 1,425 -6.07 8.8016
2022-10-21 2022-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 96,863 -25,000 -20.51 1,516 -9.11 13.0487
2022-07-29 2022-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 121,863 900 0.74 1,668 2.46 11.6221
2022-04-29 2022-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 120,963 0 0.00 1,628 30.24 7.2275
2022-01-31 2021-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 120,963 15,352 14.54 1,250 -1.81 3.3550
2021-10-28 2021-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 105,611 -36,900 -25.89 1,273 -16.91 3.5598
2021-08-10 2021-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 142,511 -8,800 -5.82 1,532 16.15 5.5590
2021-05-17 2021-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 151,311 -150,342 -49.84 1,319 -34.54 5.4780
2021-02-12 2020-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 301,653 0 0.00 2,015 8.80 7.7375
2020-11-13 2020-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 301,653 -237,688 -44.07 1,852 -47.18 0.4962
2020-08-11 2020-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 539,341 102,641 23.50 3,506 71.53 6.7327
2020-05-11 2020-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 436,700 45,000 11.49 2,044 -58.97 3.8060
2020-02-12 2019-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 391,700 239,300 157.02 4,982 129.59 6.0877
2019-11-15 2019-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 152,400 -90,000 -37.13 2,170 -42.24 2.6392
2019-08-13 2019-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 242,400 -121,098 -33.31 3,757 -41.41 4.0676
2019-05-10 2019-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 363,498 100 0.03 6,412 13.99 6.7110
2019-02-13 2018-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 363,398 1,134 0.31 5,625 -14.73 7.2335
2018-11-07 2018-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 362,264 89,766 32.94 6,597 30.94 6.5150
2018-08-14 2018-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 0 0.00 5,038 11.71 5.1327
2018-05-25 2018-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 0 0.00 4,510 -7.75 4.5602
2018-05-11 2018-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 0 4,510
2018-02-12 2017-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 0 0.00 4,889 3.47 4.7808
2017-11-14 2017-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 0 0.00 4,725 10.01 5.3333
2017-08-04 2017-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 272,498 -5,000 -1.80 4,295 -6.24 4.8533
2017-05-12 2017-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 277,498 -5,000 -1.77 4,581 -13.65 4.6282
2017-02-14 2016-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 282,498 35,000 14.14 5,305 20.35 5.7910
2016-11-14 2016-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 247,498 14,842 6.38 4,408 22.24 5.5087
2016-08-09 2016-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 232,656 162,656 232.37 3,606 267.58 4.3553
2016-05-13 2016-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 70,000 70,000 981 1.3476
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.