$MSB

$18.07 -$0.17 (0.93%) Close

$MSB Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 13.1M shares outstanding

Who owns MSB?

By type of holder

Institutions 50.3% Everyone else 49.7%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 10 holders own 44.2%

Horizon Kinetics Asset Management LLC 24.5% · Valueworks LLC 5.1%

Institutional ownership

50.3%

-0.5 pts vs last qtr

Institutional holders

-11 vs last qtr

Net shares bought

−71.1K

by institutions in Q2 2026

New / sold out

6 / 17

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

First Manhattan Co. LLC. +86.3K
Horizon Kinetics Asset Management LLC +78.4K

Biggest sellers in Q2 2026

Bank Of America Corp /de/ −133.2K
Sei Investments Co −83.9K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Mesabi Trust in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2012–FY2015

0.0%

0.00% a year

Each share's claim on the business

0.0%

shrank without buying or selling a share

Diluted shares, split-adjusted

How patient are the owners?

Institutional shares by how long they've been held

5+ years72% 3–5 years3% 1–3 years9% Under 1 year16%

Quarterly turnover

5.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MSB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
HK Horizon Kinetics Asset Management LLC	3.2M	24.54%	+78.4K (+2.5%)	≤2021	0.9%
Shares held by quarter Peak holding3.2M (Q2'26) Change over 8 quarters+559.8K Share of the company24.540% Horizon Kinetics Asset Management LLC's full portfolio →
V Valueworks LLC	669.7K	5.10%	+23.2K (+3.6%)	≤2021	3.5%
Shares held by quarter Peak holding824.4K (Q3'24) Change over 8 quarters−154.7K Share of the company5.100% Valueworks LLC's full portfolio →

Horizon Kinetics Asset Management LLC

3.2M

% of company

24.54%

Change vs last qtr

+78.4K (+2.5%)

Held since

≤2021

Valueworks LLC

669.7K

% of company

5.10%

Change vs last qtr

+23.2K (+3.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Mesabi Trust, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MSB on Form N-PORT; together they hold 7.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
HK Horizon Kinetics Inflation Beneficiaries ETF Listed Funds Trust	$9.97M	394.0K	3.00%	0.68%	June 30, 2026
1V 1290 VT Small Cap Value Portfolio EQ Advisors Trust	$4.31M	170.2K	1.30%	0.91%	June 30, 2026

Horizon Kinetics Inflation Beneficiaries ETF

Listed Funds Trust

Position value

$9.97M

% of company

3.00%

% of the fund

0.68%

As of

June 30, 2026

1290 VT Small Cap Value Portfolio

EQ Advisors Trust

Position value

$4.31M

% of company

1.30%

% of the fund

0.91%

As of

June 30, 2026

16 more funds behind a free account

See every fund holding Mesabi Trust and how much of the fund the position is.

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