O'Shaughnessy Asset Management’s Mesabi Trust MSB Stock Holding History

O'Shaughnessy Asset Management’s Portfolio MSB Stock Details MSB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$271K	Sell	8,618 -34,652	-80%	-$1.18M	﹤0.01%	1829
2025 Q4	$1.67M	Sell	43,270 -1,508	-3%	-$51.1K	0.01%	919
2025 Q3	$1.31M	Sell	44,778 -1,884	-4%	-$55.3K	0.01%	1011
2025 Q2	$1.12M	Buy	46,662 +28,324	+154%	+$736K	0.01%	1018
2025 Q1	$499K	Buy	+18,338	New	+$502K	﹤0.01%	1321
2018 Q3	–	Sell	-3,484	Closed	-$85K	–	942
2018 Q2	$85K	Hold	3,484	–	–	﹤0.01%	664
2018 Q1	$90K	Buy	+3,484	New	+$93.5K	﹤0.01%	648

Other funds holding MSB

HKAM

Horizon Kinetics Asset Management New York $9.23B AUM 27.52% 1-Year Est. Return

ValueWorks New York $367M AUM 59.38% 1-Year Est. Return

CAMG

CWA Asset Management Group Naples, Florida $3.28B AUM 34.07% 1-Year Est. Return

MRI

Mad River Investors Boston, Massachusetts $268M AUM 31.54% 1-Year Est. Return

First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return

ASN

Advisory Services Network Atlanta, Georgia $7.52B AUM 29.01% 1-Year Est. Return

Moors & Cabot Boston, Massachusetts $2.34B AUM 30.42% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

ECM

EagleClaw Capital Management Boston, Massachusetts $714M AUM 24.24% 1-Year Est. Return

SEI Investments Oaks, Pennsylvania $108B AUM 26.14% 1-Year Est. Return

O'Shaughnessy Asset Management's MSB Position: Q1 2026 in Review

O'Shaughnessy Asset Management reduced its Mesabi Trust (MSB) stake by 80% in Q1 2026, selling an estimated $1.18M and leaving 8,618 shares worth $271K. The position accounts for ﹤0.01% of the portfolio, ranked #1829.

O'Shaughnessy Asset Management first reported a position in MSB in Q1 2018 and has held it in 7 quarters since. The position peaked at $1.67M in Q4 2025. 73 funds tracked by Wall St. Rank hold MSB as of Q1 2026.

O'Shaughnessy Asset Management held 8,618 shares of Mesabi Trust worth $271K as of Q1 2026.
O'Shaughnessy Asset Management sold 34,652 Mesabi Trust shares in Q1 2026, an estimated $1.18M.
Mesabi Trust made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q1 2026, its #1829 holding.
O'Shaughnessy Asset Management first reported a position in Mesabi Trust in Q1 2018 and has held it in 7 quarters since.
O'Shaughnessy Asset Management's Mesabi Trust position peaked at $1.67M in Q4 2025.
73 funds tracked by Wall St. Rank held Mesabi Trust as of Q1 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q1 2026, filed 13 May 2026.