MSB · Mesabi Trust · Holdings

$22.48 -0.77 (-3.31%) At close · Sep 10

Market Cap

$294.94M

13.12M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 65

Total Value: $168,448,533

Total Shares: 6,658,046

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 65 13F filers · Δ vs Mar 31, 2026

Top Holder

48.4%

+1.6 pts

Top 5

77.0%

+4.6 pts

Top 10

88.3%

+2.8 pts

HHI

2,593

Highly concentrated+183

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -10

Institutional value: -20.4%

Shares held: -0.9%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large FIRST MANHATTAN CO. LLC.	+86,313	396,373
Mid HORIZON KINETICS ASSET MANAGEMENT LLC	+78,410	3,219,382
Mid CWA Asset Management Group, LLC	+71,489	518,974
Small VALUEWORKS LLC	+23,151	669,733
Mega ROYAL BANK OF CANADA	+3,709	54,825

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega BANK OF AMERICA CORP /DE/	−133,223	44,658
Large SEI INVESTMENTS CO	−83,883	83,883
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−6,300	9,400
Mega UBS Group AG	−5,411	14,893
Mega RAYMOND JAMES FINANCIAL INC	−3,288	9,304

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small PKS Advisory Services, LLC	15,975	$404,167
Mega TWO SIGMA INVESTMENTS, LP	14,520	$367,356
Mid XTX Topco Ltd	12,692	$321,107
Mega JANE STREET GROUP, LLC	12,500	$316,250
Mega BNP PARIBAS ARBITRAGE, SA	2,500	$63,250

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small MSRH, LLC	45,114	$1,421,091
Small Redhawk Wealth Advisors, Inc.	34,141	$1,075,441
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	15,734	$495,621
Small Verdad Advisers, LP	10,303	$324,544
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC	8,618	$271,467

Filter: New 7 Increased 22 Reduced 17 Sold out 17 Unchanged 19

Showing 65 of 65

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

HORIZON KINETICS ASSET MANAGEMENT LLC

$81,450,364

48.35%

3,219,382

VALUEWORKS LLC

$16,944,244

10.06%

669,733

CWA Asset Management Group, LLC

$13,130,042

7.79%

518,974

FIRST MANHATTAN CO. LLC.

$10,028,236

5.95%

396,373

MAD RIVER INVESTORS

$8,190,495

4.86%

323,735

Advisory Services Network, LLC

$4,697,425

2.79%

185,669

Moors & Cabot, Inc.

$4,510,711

2.68%

178,289

EagleClaw Capital Managment, LLC

$4,315,547

2.56%

170,575

MORGAN STANLEY

$2,866,312

1.70%

113,293

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY CAPITAL SERVICES, LLC	12,600	$318,780	11.1%	Defined
MORGAN STANLEY SMITH BARNEY LLC	100,693	$2,547,532	88.9%	Defined

Bank of New York Mellon Corp

$2,567,038

1.52%

101,464

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	101,463	$2,567,013	100.0%	Defined
Held directly	1	$25	0.0%	Defined

SEI INVESTMENTS CO

$2,122,239

1.26%

83,883

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	83,883	$2,122,239	100.0%	Sole

Lido Advisors, LLC

$2,023,544

1.20%

79,982

GEODE CAPITAL MANAGEMENT, LLC

$1,509,119

0.90%

59,649

ROYAL BANK OF CANADA

$1,387,071

0.82%

54,825

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	54,203	$1,371,335	98.9%	Defined
RBC Rochdale, LLC	622	$15,736	1.1%	Defined

BANK OF AMERICA CORP /DE/

$1,129,846

0.67%

44,658

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	12,416	$314,124	27.8%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	32,242	$815,722	72.2%	Defined

JPMORGAN CHASE & CO

$925,271

0.55%

36,572

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Investment Management Inc.	480	$12,144	1.3%	Defined
J.P. Morgan Securities LLC	36,092	$913,127	98.7%	Defined

CITADEL ADVISORS LLC

$888,030

0.53%

35,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	35,100	$888,030	100.0%	Defined

PECAUT & CO.

$859,263

0.51%

33,963

NBC SECURITIES, INC.

$777,772

0.46%

30,742

HighTower Advisors, LLC

$648,084

0.38%

25,616

Steward Partners Investment Advisory, LLC

$623,341

0.37%

24,638

COMMONWEALTH EQUITY SERVICES, LLC

$457,196

0.27%

18,071

WELLS FARGO & COMPANY/MN

$446,747

0.27%

17,658

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	3,400	$86,020	19.3%	Defined
WELLS FARGO CLEARING SERVICES, LLC	14,258	$360,727	80.7%	Defined

Russell Investments Group, Ltd.

$432,047

0.26%

17,077

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	35	$885	0.2%	Defined
Russell Investments Japan Co., LTD. joint	17,042	$431,162	99.8%	Other

Westmount Partners, LLC

$426,456

0.25%

16,856

One Charles Private Wealth Services, LLC

$410,619

0.24%

16,230

PKS Advisory Services, LLC

$404,167

0.24%

15,975

LPL Financial LLC

$396,779

0.24%

15,683

Janney Montgomery Scott LLC

$381,271

0.23%

15,070

UBS Group AG

$376,792

0.22%

14,893

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	12,601	$318,805	84.6%	Defined
UBS AG	547	$13,839	3.7%	Defined
UBS Securities LLC	1,745	$44,148	11.7%	Defined

TWO SIGMA INVESTMENTS, LP

$367,356

0.22%

14,520

Essex Financial Services, Inc.

$354,984

0.21%

14,031

XTX Topco Ltd

$321,107

0.19%

12,692

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	12,692	$321,107	100.0%	Defined

JANE STREET GROUP, LLC

$316,250

0.19%

12,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	12,500	$316,250	100.0%	Defined

Acorn Wealth Advisors, LLC

$278,300

0.17%

11,000

Inspire Advisors, LLC

$270,785

0.16%

10,703

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Inspire Investing, LLC	10,703	$270,785	100.0%	Defined

STEINBERGANNA WEALTH MANAGEMENT

$264,764

0.16%

10,465

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$237,820

0.14%

9,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	9,400	$237,820	100.0%	Other

RAYMOND JAMES FINANCIAL INC

$235,390

0.14%

9,304

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	7,673	$194,126	82.5%	Defined
Raymond James Financial Services Advisors, Inc.	1,631	$41,264	17.5%	Defined

Quent Capital, LLC

$76,937

0.05%

3,041

BNP PARIBAS ARBITRAGE, SA

$63,250

0.04%

2,500

OSAIC HOLDINGS, INC.

$49,132

0.03%

1,942

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	1,442	$36,482	74.3%	Defined
Osaic Advisory Services, LLC	500	$12,650	25.7%	Defined

NewEdge Advisors, LLC

$41,567

0.02%

1,643

Farther Finance Advisors, LLC

$38,101

0.02%

1,506

Medallion Wealth Advisors, LLC

$31,372

0.02%

1,240

CITIGROUP INC

$27,425

0.02%

1,084

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	1,084	$27,425	100.0%	Defined

United Financial Planning Group LLC

$25,300

0.02%

1,000

MARK SHEPTOFF FINANCIAL PLANNING, LLC

$25,300

0.02%

1,000

FIFTH THIRD BANCORP

$13,915

0.01%

550

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	550	$13,915	100.0%	Defined

Allworth Financial LP

$12,650

0.01%

500

Cullen/Frost Bankers, Inc.

$12,650

0.01%

500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Frost Bank - FWA	500	$12,650	100.0%	Defined

Golden State Wealth Management, LLC

$12,650

0.01%

500

Godfrey Financial Associates, Inc.

$7,590

0.00%

300

BEACON INVESTMENT ADVISORY SERVICES, INC.

$7,590

0.00%

300

Tower Research Capital LLC (TRC)

$7,033

0.00%

278

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	20	$506	7.2%	Other
Latour Trading LLC (Latour)	258	$6,527	92.8%	Defined

Bernard Wealth Management Corp.

$6,350

0.00%

251

CoreCap Advisors, LLC

$5,060

0.00%

200

SIMPLEX TRADING, LLC

$4,098

0.00%

162

Aventura Private Wealth, LLC

$3,238

0.00%

128

Financial Perspectives, Inc

$2,530

0.00%

100

FMR LLC

$683

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	27	$683	100.0%	Defined

GAMMA Investing LLC

$657

0.00%

ASSETMARK, INC

$455

0.00%

BARCLAYS PLC

$151

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	6	$151	100.0%	Defined

HUNTINGTON NATIONAL BANK

$25

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Ameriprise Financial Services, LLC	7,844	$247,086	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMO Bank N.A.	7,400	$233,100	100.0%	Defined
BMO NESBITT BURNS INC.	1	$31	0.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	400	$12,600	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	96	$3,024	100.0%	Defined

Key facts CIK 65172 CUSIP 590672101 13F (30d) 29 filings 29 filers Visit website Investor relations