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Star Equity Holdings Inc (STRR)

CUSIP: 443787205 | NYSE | Industrials · Conglomerates | Micro Cap | 80 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/AMink Brook Capital GP LLC
with Mink Brook Partners LP, Mink Brook Opportunity Fund LP
316,1398.6%New 5%+ stakeSep 30, 2026No 13F filer matched
13D/AJeffrey E. Eberwein1,149,28930.7%+44,588Jun 25, 2026No 13F filer matched
13G/AMink Brook Capital GP LLC316,139
8.6% of class · Sep 30, 2026New 5%+ stake
with Mink Brook Partners LP, Mink Brook Opportunity Fund LP
No 13F filer matched
13D/AJeffrey E. Eberwein1,149,289
30.7% of class · Jun 25, 2026+44,588
No 13F filer matched

Institutional Holders — Q3 2026

North Star Investment Management Corp.55,000
0.0% of portfolio›$538.5K
Dimensional Fund Advisors LP41,092
0.0% of portfolio›$402.2K
Axxion S.A.23,542
0.0% of portfolio›$229.5K
SBI Securities Co., Ltd.533
0.0% of portfolio›$5.2K
Citigroup Inc1
0.0% of portfolio›$10
StyleTurnoverLocationFiled
North Star Investment Management Corp.
55,000$538.5K0.0%CoreLowChicago, IL2026-10-27
Dimensional Fund Advisors LP
41,092$402.2K0.0%IndexLowAustin, TX2026-11-04
Axxion S.A.
23,542$229.5K0.0%CoreN/AGrevenmacher, Netherlands2026-10-22
SBI Securities Co., Ltd.
533$5.2K0.0%Agg GrowthLowTokyo, Mexico2026-10-22
Citigroup Inc
1$100.0%CoreMediumNew York, NY2026-11-04