Security key
590672101
MESABI TRUST - Units of Beneficial Interest (MSB)
CUSIP: 590672101
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Units of Beneficial Interest
- Total 13F shares
- 6,126,333
- Total 13F value
- $179,259,381
- Share change
- +155,845
- SEC-reported price per share
- $29.27
- Number of holders
- 70
- Value change
- +$4,824,521
- Number of buys
- 40
- Number of sells
- 21
- Shares outstanding
- 13,142,142
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
70
Top holders
10
MSB full security history
Ownership snapshot
Full 13F holder table
MESABI TRUST SEC filings
MESABI TRUST company facts
Broader feeds
Ownership snapshot
Top reported holders of MSB - MESABI TRUST - Units of Beneficial Interest (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
VALUEWORKS LLC
Disclosed value leader
HORIZON KINETICS ASSET MA...
Comparable rows
15/15
Latest evidence
30 Jun 2025
13D/G
13F
Lead comparable stake: 5.2%
13D/G row: VALUEWORKS LLC
Showing 1-6 of 15 holder rows.
Quick read
VALUEWORKS LLC leads the comparable SEC ownership view at 5.2%.
15 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 VALUEWORKS LLC's linked filing trail.
Comparable ownership
Top 5
VALUEWORKS LLC
5.2%
HORIZON KINETICS ASSET MANAGEMENT...
23%
BEDDOW CAPITAL MANAGEMENT INC
2.9%
MAD RIVER INVESTORS
2.2%
Moors & Cabot, Inc.
1.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VALUEWORKS LLC |
13D/G
13F
Company
|
5.2%
|
$16,631,766
685,846 shares
|
$0 | 30 Jun 2025 |
| HORIZON KINETICS ASSET MANAGEMENT LLC |
13F
Company
|
23%
|
$70,935,741
2,960,590 shares
|
— | 30 Jun 2025 |
| BEDDOW CAPITAL MANAGEMENT INC |
13F
Company
|
2.9%
|
$8,987,000
375,095 shares
|
— | 30 Jun 2025 |
| MAD RIVER INVESTORS |
13F
Company
|
2.2%
|
$7,078,099
295,413 shares
|
— | 30 Jun 2025 |
| Moors & Cabot, Inc. |
13F
Company
|
1.5%
|
$4,653,109
194,203 shares
|
— | 30 Jun 2025 |
| Advisory Services Network, LLC |
13F
Company
|
1.4%
|
$5,306,219
181,347 shares
|
— | 30 Jun 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 Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
70
Shares
6,126,333
Rows available
70
| 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 Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
61
Q3 2025 holders
70
Holder diff
9
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|