Security Snapshot

MESABI TRUST - Units of Beneficial Interest (MSB) Institutional Ownership

CUSIP: 590672101

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

62

Shares (Excl. Options)

6.6MFull value: 6,601,046 · shares · 30 Jun 2026

Price

$25.30

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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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
Latest holder snapshot 5 signals
Total 13F value
$166,950,482
Portfolio coverage rank
0%
Share change
-27,545
Value change
-$1,341,981
Number of holders
62
Issuer context Names, identifiers, and filing context for this profile. 2 identity fields
Shares outstanding
13,142,142
SEC-reported price per share
$19.59
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

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
    $210.16MFull value: $210,161,164 · USD · 31 Mar 2026
    to
    $166.95MFull value: $166,950,482 · USD · 30 Jun 2026
    .

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

Latest holder context comes from 62 institutions filings for Q2 2026.

Open SEC evidence

Security key

590672101

13F reference period

Q2 2026

13F holders

62

13D/G owners

2

CIK / CUSIP context first

Open Q2 2026 holders MSB full holder history MESABI TRUST SEC filings MESABI TRUST company facts

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

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
6.6MFull value: 6,601,046 · shares · 30 Jun 2026
shares of MESABI TRUST - Units of Beneficial Interest (MSB). This represents 50% of the company’s total
13.14MFull value: 13,142,142 · shares · Stored outstanding share count
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
51
Headline period
Q2 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 951,381 $18,728,789 +$60,085 $19.59 12
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
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