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

SecurityBSM / Black Stone Minerals, L.P. - Limited Partnership
InstitutionHrt Financial Lp
Latest Disclosed Ownership182,791 shares
Latest Disclosed Value $ 2,763
Hrt Financial Lp reports 9.10% decrease in ownership of BSM / Black Stone Minerals, L.P. - Limited Partnership

On May 14, 2026 - Hrt Financial Lp filed a 13F-HR form disclosing ownership of 182,791 shares of Black Stone Minerals, L.P. - Limited Partnership (US:BSM) valued at $2,763,800 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 201,087 shares of Black Stone Minerals, L.P. - Limited Partnership. This represents a change in shares of -9.10% during the quarter. The current value of the position is $2,538,967 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)
2026-05-14 2026-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 182,791 -18,296 -9.10 3 0.00 0.0069
2026-02-12 2025-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 201,087 131,476 188.87 3 0.0084
2025-11-14 2025-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 69,611 69,611 1 0.0034
2025-05-15 2025-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 0 -28,031 -100.00 0 0.0000
2025-02-14 2024-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 28,031 -10,911 -28.02 0 0.0021
2024-11-12 2024-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 38,942 -92,237 -70.31 1 -100.00 0.0029
2024-08-12 2024-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 131,179 131,179 2 0.0115
2024-05-13 2024-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 0 -56,610 -100.00 0 0.0000
2024-02-09 2023-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 56,610 7,502 15.28 1 0.0066
2023-11-13 2023-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 49,108 -35,678 -42.08 1 -100.00 0.0084
2023-08-11 2023-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 84,786 -106,545 -55.69 1 -66.67 0.0126
2023-05-12 2023-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 191,331 74,657 63.99 3 200.00 0.0366
2023-02-10 2022-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 116,674 67,428 136.92 2 -99.87 0.0278
2022-11-14 2022-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 49,246 49,246 770 0.0083
2022-05-16 2022-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 0 -17,388 -100.00 0 -100.00
2022-02-14 2021-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 17,388 17,388 179 0.0010
2020-02-14 2019-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 0 -13,272 -100.00 0 -100.00
2019-11-14 2019-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 13,272 13,272 188 0.0089
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.