MSB · Mesabi Trust · Shareholders & Ownership

$18.69 +0.45 (+2.47%)

Market Cap

$239.31M

13.12M

Volume · Oct 26 25.55K Avg daily vol (3M) 42.09K

Every disclosed holder of MSB in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns MSB

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	62	6,600,532	50.31%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	6,519,478	49.69%	Rest
Registered funds (N-PORT, not summed)	18	938,329	7.15%	No

Shares outstanding: 13,120,010, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MSB

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	HORIZON KINETICS ASSET MANAGEMENT LLC 13F CIK 1056823 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,219,382	24.54%	+78,410	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	Horizon Kinetics Inflation Beneficiaries ETF Fund S000070458 · Registered fund · Jun 30, 2026 Listed Funds Trust, not summed	393,971	3.00%	0	Jun 30, 2026	Listed Funds Trust, not summed
2	VALUEWORKS LLC 13F CIK 1282189 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	669,733	5.10%	+23,151	Jun 30, 2026	carried, not yet filed for the newest quarter
3	CWA Asset Management Group, LLC 13F CIK 1667134 · Registered investment adviser · Sep 30, 2026	517,548	3.94%	-1,426	Sep 30, 2026
4	FIRST MANHATTAN CO. LLC. 13F CIK 728083 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	396,373	3.02%	+86,313	Jun 30, 2026	carried, not yet filed for the newest quarter
5	MAD RIVER INVESTORS 13F CIK 1384484 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	323,735	2.47%	+2,189	Jun 30, 2026	carried, not yet filed for the newest quarter
6	Advisory Services Network, LLC 13F CIK 1573876 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	185,669	1.42%	+1,040	Jun 30, 2026	carried, not yet filed for the newest quarter
7	Moors & Cabot, Inc. 13F CIK 1607239 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	178,289	1.36%	-2,656	Jun 30, 2026	carried, not yet filed for the newest quarter
8	EagleClaw Capital Managment, LLC 13F CIK 1607636 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	170,575	1.30%	+800	Jun 30, 2026	carried, not yet filed for the newest quarter
9	1290 VT Small Cap Value Portfolio Fund S000044687 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	170,184	1.30%	0	Jun 30, 2026	EQ Advisors Trust, not summed
10	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	113,293	0.86%	-752	Jun 30, 2026	carried, not yet filed for the newest quarter
11	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	101,464	0.77%	+1,266	Jun 30, 2026	carried, not yet filed for the newest quarter
12	SEI INVESTMENTS CO 13F CIK 350894 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	83,883	0.64%	-83,883	Jun 30, 2026	carried, not yet filed for the newest quarter
13	Lido Advisors, LLC 13F CIK 1650150 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	79,982	0.61%	+1	Jun 30, 2026	carried, not yet filed for the newest quarter
14	WisdomTree U.S. SmallCap Dividend Fund Fund S000012394 · Registered fund · Jun 30, 2026 WisdomTree Trust, not summed	71,068	0.54%	+1,503	Jun 30, 2026	WisdomTree Trust, not summed
15	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	59,649	0.45%	+2,139	Jun 30, 2026	carried, not yet filed for the newest quarter
16	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	54,825	0.42%	+3,709	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Kinetics Small Cap Opportunities Portfolio Fund S000007855 · Registered fund · Jun 30, 2026 Kinetics Portfolios Trust, not summed	50,200	0.38%	0	Jun 30, 2026	Kinetics Portfolios Trust, not summed
18	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	44,658	0.34%	-133,223	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Kinetics Paradigm Portfolio Fund S000007853 · Registered fund · Jun 30, 2026 Kinetics Portfolios Trust, not summed	41,800	0.32%	0	Jun 30, 2026	Kinetics Portfolios Trust, not summed
20	Kinetics Market Opportunities Portfolio Fund S000007856 · Registered fund · Jun 30, 2026 Kinetics Portfolios Trust, not summed	41,482	0.32%	0	Jun 30, 2026	Kinetics Portfolios Trust, not summed
21	Kinetics Internet Portfolio Fund S000007851 · Registered fund · Jun 30, 2026 Kinetics Portfolios Trust, not summed	37,900	0.29%	0	Jun 30, 2026	Kinetics Portfolios Trust, not summed
22	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	36,572	0.28%	+268	Jun 30, 2026	carried, not yet filed for the newest quarter
23	PECAUT & CO. 13F CIK 1597200 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	33,963	0.26%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
24	NBC SECURITIES, INC. 13F CIK 791540 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,742	0.23%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
25	HighTower Advisors, LLC 13F CIK 1462245 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	25,616	0.20%	-900	Jun 30, 2026	carried, not yet filed for the newest quarter
26	Steward Partners Investment Advisory, LLC 13F CIK 1723397 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	24,638	0.19%	+378	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Kinetics Global Portfolio Fund S000007852 · Registered fund · Jun 30, 2026 Kinetics Portfolios Trust, not summed	20,918	0.16%	0	Jun 30, 2026	Kinetics Portfolios Trust, not summed
28	WisdomTree U.S. SmallCap Fund Fund S000015507 · Registered fund · Jun 30, 2026 WisdomTree Trust, not summed	20,514	0.16%	+121	Jun 30, 2026	WisdomTree Trust, not summed
29	RENN Fund, Inc. Fund · Registered fund · Jun 30, 2026 RENN FUND, INC., not summed	19,510	0.15%	—	Jun 30, 2026	RENN FUND, INC., not summed
30	COMMONWEALTH EQUITY SERVICES, LLC 13F CIK 312272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	18,071	0.14%	-940	Jun 30, 2026	carried, not yet filed for the newest quarter
31	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	17,658	0.13%	-334	Jun 30, 2026	carried, not yet filed for the newest quarter
32	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	17,077	0.13%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Westmount Partners, LLC 13F CIK 2051491 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	16,856	0.13%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
34	One Charles Private Wealth Services, LLC 13F CIK 1800938 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	16,230	0.12%	-1,033	Jun 30, 2026	carried, not yet filed for the newest quarter
35	PKS Advisory Services, LLC 13F CIK 1605401 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	15,975	0.12%	+15,975	Jun 30, 2026	carried, not yet filed for the newest quarter
36	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	15,683	0.12%	-2,979	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Janney Montgomery Scott LLC 13F CIK 1329948 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	15,070	0.11%	-2,030	Jun 30, 2026	carried, not yet filed for the newest quarter
38	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	14,893	0.11%	-5,411	Jun 30, 2026	carried, not yet filed for the newest quarter
39	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	14,520	0.11%	+14,520	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Essex Financial Services, Inc. 13F CIK 1315785 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	14,031	0.11%	+118	Jun 30, 2026	carried, not yet filed for the newest quarter
41	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	12,692	0.10%	+12,692	Jun 30, 2026	carried, not yet filed for the newest quarter
42	STEINBERGANNA WEALTH MANAGEMENT 13F CIK 2089528 · Unknown · Sep 30, 2026	11,390	0.09%	+925	Sep 30, 2026
43	Acorn Wealth Advisors, LLC 13F CIK 1730610 · Registered investment adviser · Sep 30, 2026	11,000	0.08%	0	Sep 30, 2026
44	Inspire Advisors, LLC 13F CIK 1810558 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10,703	0.08%	+3,275	Jun 30, 2026	carried, not yet filed for the newest quarter
45	WisdomTree U.S. High Dividend Fund Fund S000012390 · Registered fund · Jun 30, 2026 WisdomTree Trust, not summed	9,881	0.08%	-357	Jun 30, 2026	WisdomTree Trust, not summed
46	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	9,304	0.07%	-3,288	Jun 30, 2026	carried, not yet filed for the newest quarter
47	Quent Capital, LLC 13F CIK 1912338 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,041	0.02%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
48	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	2,500	0.02%	+2,500	Jun 30, 2026	carried, not yet filed for the newest quarter
49	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,942	0.01%	-2,945	Jun 30, 2026	carried, not yet filed for the newest quarter
50	NewEdge Advisors, LLC 13F CIK 1633516 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,643	0.01%	+5	Jun 30, 2026	carried, not yet filed for the newest quarter

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 73 holders

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Key facts CIK 65172 CUSIP 590672101 13F (30d) 8 filings 8 filers Visit website Investor relations