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

SecurityBSM / Black Stone Minerals, L.P. - Limited Partnership
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership93,756 shares
Latest Disclosed Value $ 1,417,588
Mercer Global Advisors Inc /adv reports 0.20% increase in ownership of BSM / Black Stone Minerals, L.P. - Limited Partnership

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 93,756 shares of Black Stone Minerals, L.P. - Limited Partnership (US:BSM) valued at $1,417,591 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 93,565 shares of Black Stone Minerals, L.P. - Limited Partnership. This represents a change in shares of 0.20% during the quarter. The current value of the position is $1,302,271 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 93,756 191 0.20 1,418 14.00 0.0021
2026-02-17 2025-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 93,565 -23 -0.02 1,243 1.14 0.0019
2025-11-14 2025-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 93,588 -4 -0.00 1,230 0.41 0.0021
2025-08-14 2025-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 93,592 -1,272 -1.34 1,224 -15.47 0.0025
2025-05-15 2025-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 94,864 -186 -0.20 1,449 4.40 0.0033
2025-02-14 2024-12-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 95,050 -2,931 -2.99 1,388 -6.47 0.0034
2024-11-14 2024-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 97,981 -154 -0.16 1,483 -3.51 0.0035
2024-08-12 2024-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 98,135 672 0.69 1,538 153,600.00 0.0042
2024-05-15 2024-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 97,463 1,566 1.63 2 0.00 0.0044
2024-02-15 2023-12-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 95,897 5,802 6.44 2 0.00 0.0046
2023-11-15 2023-09-30 13F/A-1 BLACK STONE MINERALS L P COM UNIT 09225M101 90,095 -71 -0.08 2 0.00 0.0059
2023-11-14 2023-09-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 90,095 -71 2 0.0059
2023-08-14 2023-06-30 13F BLACK STONE MINERALS L P COM UNIT 09225M101 90,166 135 0.15 1 0.00 0.0057
2023-05-16 2023-03-31 13F BLACK STONE MINERALS L P COM UNIT 09225M101 90,031 -1,200 -1.32 1 0.00 0.0064
2023-02-09 2022-12-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 91,231 411 0.45 2 -99.93 0.0077
2022-11-15 2022-09-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 90,820 150 0.17 1,421 14.50 0.0084
2022-08-10 2022-06-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 90,670 0 0.00 1,241 1.72 0.0076
2022-05-10 2022-03-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 90,670 -120 -0.13 1,220 28.83 0.0072
2022-02-04 2021-12-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 90,790 0 0.00 947 -13.44 0.0058
2021-11-10 2021-09-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 90,790 -950 -1.04 1,094 10.95 0.0076
2021-08-10 2021-06-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 91,740 0 0.00 986 23.25 0.0076
2021-08-10 2021-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT COM 09225M101 91,740 0 0.00 800 30.51 0.0073
2021-05-11 2021-03-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 91,740 0 800 0.0077
2021-02-12 2020-12-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 91,740 -1,930 -2.06 613 6.61 0.0077
2020-12-10 2020-09-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 93,670 56,877 154.59 575 140.59 0.0086
2020-08-10 2020-06-30 13F BLACK STONE MINERALS L P UNIT COM 09225M101 36,793 -56,877 -60.72 239 -45.43 0.0043
2020-05-18 2020-03-31 13F BLACK STONE MINERALS L P UNIT COM 09225M101 93,670 12,200 14.97 438 -57.72 0.0096
2020-02-13 2019-12-31 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 81,470 0 0.00 1,036 -10.69 0.0207
2019-11-12 2019-09-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 81,470 32,253 65.53 1,160 52.03 0.0273
2019-08-14 2019-06-30 13F BLACK STONE MINERALS L P COM UNIT COM 09225M101 49,217 9,679 24.48 763 9.47 0.0202
2019-04-23 2019-03-31 13F/A-1 BLACK STONE MINERALS L P COM UNIT COM 09225M101 39,538 39,538 697 0.0251
2019-04-12 2019-03-31 13F BLACK STONE MINERALS L P COM 09225M101 38,338 593 0.0316
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.