Latest Period
Q2 2026
Security Snapshot
MESABI TRUST - Units of Beneficial Interest (MSB) Institutional Ownership
CUSIP: 590672101
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
62
Shares (Excl. Options)
6,601,046
Price
$25.30
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- Security type / class
- Equity / Units of Beneficial Interest
- Symbol
- MSB on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 6,601,046
- Total 13F value
- $166,950,482
- Portfolio coverage rank
- 0%
- Share change
- -27,545
- Value change
- -$1,341,981
- Number of holders
- 62
- Shares outstanding
- 13,142,142
- SEC-reported price per share
- $25.46
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MSB - MESABI TRUST - Units of Beneficial Interest is tracked under CUSIP 590672101.
- 62 institutions reported positions in Q2 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 73 to 62 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $210,161,164 to $166,950,482.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 62 institutions filings for Q2 2026.
Security key
590672101
Latest holder period
Q2 2026
13F holders
62
13D/G owners
2
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 590672101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
MSB
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| HORIZON KINETICS ASSET MANAGEMENT LLC | 24% | +4.3% | $98,940,618 | +$4,461,849 | 3,140,972 | +4.7% | HORIZON KINETICS ASSET MANAGEMENT LLC | 31 Mar 2026 |
| VALUEWORKS LLC | 5.2% | $16,631,766 | 685,846 | VALUEWORKS LLC | 30 Jun 2025 |
As of 30 Jun 2026, 62 institutional investors reported holding 6,601,046 shares of MESABI TRUST - Units of Beneficial Interest (MSB). This represents 50% of the company’s total 13,142,142 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
49%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| HORIZON KINETICS ASSET MANAGEMENT LLC | 24% | 3,219,382 | +2.5% | 0.92% | $81,450,362 |
| VALUEWORKS LLC | 5.1% | 669,733 | +3.6% | 3.5% | $16,944,253 |
| CWA Asset Management Group, LLC | 3.9% | 518,974 | +16% | 0.4% | $13,130,052 |
| FIRST MANHATTAN CO. LLC. | 3% | 396,373 | +28% | 0.03% | $10,028,237 |
| MAD RIVER INVESTORS | 2.5% | 323,735 | +0.68% | 3.1% | $8,190,493 |
| Advisory Services Network, LLC | 1.4% | 185,669 | +0.56% | 0.05% | $4,697,424 |
| Moors & Cabot, Inc. | 1.4% | 178,289 | -1.5% | 0.18% | $4,510,711 |
| EagleClaw Capital Managment, LLC | 1.3% | 170,575 | +0.47% | 0.58% | $4,315,548 |
| MORGAN STANLEY | 0.86% | 113,293 | -0.66% | 0% | $2,866,313 |
| Bank of New York Mellon Corp | 0.77% | 101,464 | +1.3% | 0% | $2,567,051 |
| SEI INVESTMENTS CO | 0.64% | 83,883 | -50% | 0% | $2,122,240 |
| Lido Advisors, LLC | 0.61% | 79,982 | +0% | 0.01% | $2,023,562 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.45% | 59,649 | +3.7% | 0% | $1,509,119 |
| ROYAL BANK OF CANADA | 0.42% | 54,825 | +7.3% | 0% | $1,387,000 |
| BANK OF AMERICA CORP /DE/ | 0.34% | 44,658 | -75% | 0% | $1,129,848 |
| JPMORGAN CHASE & CO | 0.28% | 36,572 | +0.74% | 0% | $873,339 |
| PECAUT & CO. | 0.26% | 33,963 | 0% | 0.26% | $859,264 |
| LANARK FINANCIAL, INC. | 0.23% | 30,742 | 0% | 0.05% | $777,772 |
| HighTower Advisors, LLC | 0.19% | 25,616 | -3.4% | 0% | $648,077 |
| Steward Partners Investment Advisory, LLC | 0.19% | 24,638 | +1.6% | 0% | $623,341 |
| COMMONWEALTH EQUITY SERVICES, LLC | 0.14% | 18,071 | -4.9% | 0% | $457,210 |
| WELLS FARGO & COMPANY/MN | 0.13% | 17,658 | -1.9% | 0% | $446,746 |
| Russell Investments Group, Ltd. | 0.13% | 17,077 | 0% | 0% | $432,048 |
| Westmount Partners, LLC | 0.13% | 16,856 | 0% | 0.09% | $426,455 |
| One Charles Private Wealth Services, LLC | 0.12% | 16,230 | -6% | 0.09% | $410,619 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 6,601,046 | $166,950,482 | -$1,341,981 | $25.30 | 62 |
| 2026 Q1 | 6,672,128 | $210,161,164 | +$18,748,682 | $31.50 | 73 |
| 2025 Q4 | 6,412,547 | $246,280,614 | +$8,552,593 | $38.52 | 82 |
| 2025 Q3 | 6,126,333 | $179,259,381 | +$4,824,521 | $29.27 | 70 |
| 2025 Q2 | 5,957,381 | $143,707,494 | +$5,064,529 | $23.96 | 61 |
| 2025 Q1 | 5,769,618 | $156,842,285 | -$8,295,724 | $27.20 | 62 |
| 2024 Q4 | 6,071,131 | $170,651,694 | +$13,109,526 | $28.11 | 58 |
| 2024 Q3 | 5,574,366 | $126,285,588 | +$3,121,668 | $22.65 | 46 |
| 2024 Q2 | 5,473,109 | $94,249,507 | +$2,554,139 | $17.23 | 47 |
| 2024 Q1 | 5,321,740 | $94,191,827 | -$2,457,822 | $17.70 | 50 |
| 2023 Q4 | 5,452,407 | $111,608,971 | -$15,469 | $20.47 | 50 |
| 2023 Q3 | 5,452,780 | $109,432,056 | +$3,959,480 | $20.07 | 45 |
| 2023 Q2 | 5,253,202 | $106,951,688 | +$1,261,806 | $20.41 | 45 |
| 2023 Q1 | 5,178,553 | $130,396,917 | +$7,772,703 | $25.18 | 42 |
| 2022 Q4 | 4,914,009 | $88,548,356 | +$5,874,174 | $18.02 | 50 |
| 2022 Q3 | 4,561,308 | $98,106,203 | -$631,228 | $21.51 | 52 |
| 2022 Q2 | 4,574,122 | $112,224,624 | +$2,341,218 | $24.52 | 53 |
| 2022 Q1 | 4,470,461 | $119,093,379 | +$3,190,150 | $26.64 | 56 |
| 2021 Q4 | 4,354,369 | $115,034,273 | +$11,368,769 | $26.42 | 52 |
| 2021 Q3 | 3,851,946 | $115,516,498 | +$945,116 | $29.71 | 58 |
| 2021 Q2 | 3,813,896 | $135,011,223 | +$11,482,699 | $35.40 | 64 |
| 2021 Q1 | 3,494,893 | $105,176,008 | +$15,389,109 | $30.08 | 56 |
| 2020 Q4 | 2,992,708 | $83,884,067 | +$13,225,825 | $28.05 | 45 |
| 2020 Q3 | 2,533,649 | $53,777,234 | +$13,659,523 | $21.22 | 39 |
| 2020 Q2 | 1,895,147 | $33,179,839 | +$3,093,449 | $17.51 | 37 |