Security key
09225M101
Black Stone Minerals, L.P. - Common Units (BSM)
CUSIP: 09225M101
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Units
- Total 13F shares
- 43,531,224
- Total 13F value
- $657,829,670
- Share change
- +3,561,190
- Put/Call ratio
- 30%
- SEC-reported price per share
- $15.12
- Number of holders
- 192
- Value change
- +$55,438,509
- Number of buys
- 70
- Number of sells
- 59
Open additional details 1 more signal available
Report period
Q1 2026
Institutions
192
Top holders
10
BSM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
Black Stone Minerals, L.P. SEC filings
Black Stone Minerals, L.P. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 09225M101
Recent filing periods:
Ownership snapshot
Top reported holders of BSM - Black Stone Minerals, L.P. - Common Units (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
MORGAN STANLEY
Disclosed value leader
MORGAN STANLEY
Comparable rows
0/15
Latest evidence
13 Jan 2026
13F
3/4/5
Highest disclosed value: $94,460,982
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
MORGAN STANLEY has the largest disclosed position value at $94.46M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MORGAN STANLEY's linked filing trail.
Disclosed position value
Top 5
MORGAN STANLEY
$94.46M
James Whitehead
$82.82M
William Marsh Rice University
$75.27M
John H. Longmaid
$61.33M
William N. Mathis
$29.85M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MORGAN STANLEY |
13F
Company
|
—
class O/S missing
|
$94,460,982
7,107,673 shares
|
— | 31 Dec 2025 |
| James Whitehead |
3/4/5
Director
|
—
class O/S missing
|
$82,818,944
6,231,674 shares
|
— | 13 Jan 2026 |
| William Marsh Rice University |
13F
Company
|
—
class O/S missing
|
$75,267,596
5,663,476 shares
|
— | 31 Dec 2025 |
| John H. Longmaid |
3/4/5
Director
|
—
class O/S missing
|
$61,331,624
3,821,285 shares
|
— | 11 Jan 2024 |
| William N. Mathis |
3/4/5
Director
|
—
class O/S missing
|
$29,845,877
2,271,376 shares
|
— | 03 Oct 2025 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
—
class O/S missing
|
$28,911,557
2,175,437 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
192
Shares
43,531,224
Rows available
192
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
192
Q1 2026 holders
192
Holder diff
0
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend