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Equibles

MAD RIVER INVESTORS

Position in MSB — Mesabi Trust

CIK 1384484 BOSTON, MA
Back to MSB Full portfolio

Position in MSB

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$8,190,495
-$1,938,204 QoQ
Shares Held
323,735
+0.7% QoQ
Ownership
2.47%
of shares outstanding
% of Portfolio
3.09%
of 13F equity value
Holder Rank
#5
of 62 holders
Holding Since
Sep 2020
24 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in MSB Over Time

Shares Held

Position Value (USD)

Position in Steel

Basic Materials · as of Jun 30, 2026

MAD RIVER INVESTORS holds $8,190,495 across 1 Steel name. MSB ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 MSB
Mesabi Trust
This page 		323,735 $8,190,495

All Filings in MSB

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $8,190,495 323,735
2026-03-31 $10,128,699 321,546
2025-12-31 $11,426,919 296,649
2025-09-30 $8,649,958 295,523
2025-06-30 $7,078,095 295,413
2025-03-31 $8,063,630 296,457
2024-12-31 $8,289,667 294,901
2024-09-30 $6,638,012 293,069
2024-06-30 $5,025,060 291,646
2024-03-31 $5,059,314 285,837
2023-12-31 $5,333,397 260,547
2023-09-30 $7,131,071 355,310
2023-06-30 $7,173,604 351,475
2023-03-31 $8,651,218 343,575
2022-12-31 $5,089,298 282,425
2022-09-30 $4,255,215 197,825
2022-06-30 $4,791,821 195,425
2022-03-31 $5,118,210 192,125
2021-12-31 $5,089,152 192,625
2021-09-30 $5,612,219 188,900
2021-06-30 $6,687,060 188,900
2021-03-31 $5,647,520 187,750
2020-12-31 $5,105,100 182,000
2020-09-30 $1,206,357 56,850