What does CUSIP 590672101 represent in this 13F holders report?

CUSIP 590672101 is the security identifier for MSB - MESABI TRUST - Units of Beneficial Interest used to aggregate holder disclosures.

How many institutions held MSB - MESABI TRUST - Units of Beneficial Interest in Q2 2021?

64 institutional investors reported MSB - MESABI TRUST - Units of Beneficial Interest for Q2 2021. Use the holders table for investor-level position and value details.

MESABI TRUST - Units of Beneficial Interest (MSB)

CUSIP: 590672101

Q2 2021 13F Holders as of 30 Jun 2021

Security type / class: Equity / Units of Beneficial Interest
Total 13F shares: 3,813,896
Total 13F value: $135,011,223
Share change: +312,003
Put/Call ratio: 8.7%
SEC-reported price per share: $35.40
Number of holders: 64
Value change: +$11,482,699
Number of buys: 31
Number of sells: 20
Shares outstanding: 13,142,142

Security key

590672101

Report period

Q2 2021

Institutions

Top holders

MSB full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 MESABI TRUST SEC filings MESABI TRUST company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 590672101

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

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

HORIZON KINETICS ASSET MA...

Disclosed value leader

HORIZON KINETICS ASSET MA...

Comparable rows

0/15

Latest evidence

31 Mar 2021

13F Highest disclosed value: $51,267,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

HORIZON KINETICS ASSET MANAGEMENT LLC has the largest disclosed position value at $51.27M.

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 HORIZON KINETICS ASSET MANAGEMENT LLC's linked filing trail.

Disclosed position value Top 5

HORIZON KINETICS ASSET MANAGEMENT... $51.27M

BEDDOW CAPITAL MANAGEMENT INC $12.19M

SFE Investment Counsel $10.11M

MAD RIVER INVESTORS $5.65M

VALUEWORKS LLC $5.62M

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
HORIZON KINETICS ASSET MANAGEMENT LLC	13F Company 13F	— denominator unverified	$51,267,000 1,704,371 shares	—	31 Mar 2021
BEDDOW CAPITAL MANAGEMENT INC	13F Company 13F	— denominator unverified	$12,194,000 405,387 shares	—	31 Mar 2021
SFE Investment Counsel	13F Company 13F	— denominator unverified	$10,110,000 335,536 shares	—	31 Mar 2021
MAD RIVER INVESTORS	13F Company 13F	— denominator unverified	$5,648,000 187,750 shares	—	31 Mar 2021
VALUEWORKS LLC	13F Company 13F	— denominator unverified	$5,615,000 186,675 shares	—	31 Mar 2021
MORGAN STANLEY	13F Company 13F	— denominator unverified	$2,306,000 76,672 shares	—	31 Mar 2021

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 Q2 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

3,813,896

Rows available

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 Q2 2021 vs Q1 2021 Across Filers

Q1 2021 holders

Q2 2021 holders

Holder diff

Investor	Q1 2021 Shares	Q2 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q2 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend