MSB · Insider trading · 13F holders · Congress trades
Mesabi Trust Common Stock (MSB)
Who is buying and selling MSB: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 5
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 1
MSB at a glance
- No open-market insider purchases or sales of MSB were filed in the last 90 days.
- 5 13F filers hold MSB among their 50 largest positions, worth $110.5M combined. The biggest bets by portfolio weight are Valueworks LLC (3.5%), Mad River Investors (2.6%) and Msrh, LLC (1.3%).
- Members of Congress have disclosed 6 MSB trades since 2014, 1 purchase and 0 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), buying $15K–50K on Jul 31, 2026.
- MSB last closed at $17.89 on Oct 30, 2026.
MSB insider trading
No open-market insider purchases or sales of MSB were filed in the last 90 days.
Who owns MSB? Hedge funds and superinvestors
5 13F filers hold MSB among their 50 largest positions, worth $110.5M combined. The biggest bets by portfolio weight are Valueworks LLC (3.5%), Mad River Investors (2.6%) and Msrh, LLC (1.3%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Horizon Kinetics Asset Management LLCAsset manager | 0.9% | $81.5M | 3,219,382 | +2.5% shares | Q2 2026 |
| Valueworks LLCHedge fund | 3.5% | $16.9M | 669,733 | +3.6% shares | Q2 2026 |
| Mad River InvestorsWealth manager | 2.6% | $6.4M | 327,316 | +1.1% shares | Q3 2026 |
| EagleClaw Capital Managment, LLCAsset manager | 0.6% | $4.3M | 170,575 | +0.5% shares | Q2 2026 |
| Msrh, LLCHedge fund | 1.3% | $1.4M | 45,114 | +0.0% shares | Q1 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 3, Q1 2026: 1). Screen MSB in the grand portfolio →
MSB stock trades by members of Congress
Members of Congress have disclosed 6 MSB trades since 2014, 1 purchase and 0 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), buying $15K–50K on Jul 31, 2026.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Sep 4, 2026 | Gilbert Ray Cisneros, Jr.D-CA · House | Buy | $15K–50K | Jul 31, 2026 | -18.6% |
| Nov 18, 2021 | Kim SchrierD-WA · House | Sale | $1K–15K | Oct 28, 2021 | -23.2% |
| Mar 7, 2019 | Virginia FoxxR-NC · House | Sale | $15K | Feb 12, 2019 | -39.1% |
| Feb 5, 2019 | Virginia FoxxR-NC · House | Buy | $15K–50K | Jan 28, 2019 | -36.1% |
| Dec 5, 2016 | Brad AshfordD-NE · House | Buy | $1K–15K | Nov 22, 2016 | +66.4% |
| Jan 24, 2014 | Eric CantorR-VA · House | Buy | $15K–50K | Jan 16, 2014 | -19.2% |
5 members have traded MSB: Gilbert Ray Cisneros, Jr., Kim Schrier, Virginia Foxx, Brad Ashford, Eric Cantor.
MSB questions and answers
Are insiders buying MSB stock?
No open-market insider purchases or sales of MSB were filed in the last 90 days.
Which hedge funds own MSB?
5 13F filers hold MSB among their 50 largest positions, worth $110.5M combined. The biggest bets by portfolio weight are Valueworks LLC (3.5%), Mad River Investors (2.6%) and Msrh, LLC (1.3%).
Has Congress traded MSB?
Members of Congress have disclosed 6 MSB trades since 2014, 1 purchase and 0 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), buying $15K–50K on Jul 31, 2026.
Who is the largest holder of MSB?
Among 13F filers, Horizon Kinetics Asset Management LLC reports the largest MSB position, $81.5M (3,219,382 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Valueworks LLC's: 3.5% of its portfolio.
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