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Super Investors Mink Brook Asset Management LLC
MB

Mink Brook Asset Management LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$227M
Positions
52
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (7 quarters reported)

$227M $95.1M
Q4 24 Q2 25 Q4 25 Q2 26

$104M in Q4 2024 → $227M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Envela Corporation 15.9% Trimmed 2.3% 1,248,319 $36.1M
Bank7 Corp 10.3% Added 0.6% 475,610 $23.3M
AI American Integrity Insurance 8.1% Added 16% 977,969 $18.4M
Acme United Corp 8.0% Unchanged 380,643 $18.2M
Dlh Holdings Corp 6.5% Added 5.2% 2,816,058 $14.8M
Ascent Industries Co 5.9% Trimmed 0.3% 884,483 $13.3M
CE Currency Exchange Internatio 5.8% Unchanged 613,221 $13M
A Astro-med Inc 4.8% Unchanged 380,965 $10.8M
Rimini Street Inc 4.5% Added 23% 2,368,353 $10.1M
Butler National Corp 2.6% Added 4.9% 1,421,111 $5.93M
Creative Realities Inc 2.1% Added 53% 1,166,954 $4.82M
Legacy Education Inc 2.0% Added 54% 389,498 $4.58M
First Northwest Bancorp 2.0% New 417,006 $4.51M
RT Rcm Technologies Inc 1.7% New 134,688 $3.8M
Star Equity Holdings Inc 1.5% Unchanged 316,139 $3.37M
Red Robin Gourmet Burgers 1.5% Added 4.9% 416,211 $3.33M
Regis Corp 1.4% Added 11% 112,362 $3.15M
Heritage Global Inc 1.2% Added 1.6% 2,273,077 $2.75M
Friedman Industries 1.2% Trimmed 48% 84,171 $2.71M
Exagen Inc 1.0% Added 29% 475,944 $2.21M
CH Comstock Homebuilding Cos-a 0.9% Added 1.5% 121,473 $1.94M
Acres Commercial Realty Corp 0.8% Added 9.9% 101,618 $1.81M
Standard Biotools Inc 0.8% New 2,190,973 $1.8M
Laird Superfood Inc 0.8% Added 1.8% 361,729 $1.7M
Stran & Co Inc 0.7% Added 52% 756,482 $1.69M
Fluent Inc 0.7% Added 21% 409,033 $1.53M
Health Catalyst Inc 0.6% New 738,277 $1.47M
Holley Inc 0.6% Unchanged 551,738 $1.41M
Amrep Corp 0.6% Unchanged 50,621 $1.28M
CB Citizens Bancshares Corp 0.5% New 22,700 $1.22M
HI Health In Tech Inc-class A 0.5% Added 41% 1,133,369 $1.14M
MP Motorcar Parts Of America In 0.5% Trimmed 51% 70,719 $1.08M
MI Mcdermott International Ltd 0.5% Unchanged 46,530 $1.02M
Optex Systems Holdings Inc 0.4% Trimmed 3.9% 62,284 $874K
Optimizerx Corp 0.4% New 141,235 $808K
KS Kewaunee Scientific Cp 0.3% Unchanged 21,447 $762K
NA Natural Alternatives Intl 0.3% Trimmed 0.1% 293,447 $701K
Champions Oncology Inc 0.3% Unchanged 111,338 $686K
Opus Genetics Inc 0.3% Trimmed 73% 161,205 $663K
Fitlife Brands Inc 0.2% Added 63% 46,637 $513K
Netsol Technologies Inc 0.2% Unchanged 109,346 $505K
Optimumbank Holdings Inc 0.2% New 78,552 $459K
Freightos Ltd 0.2% Unchanged 289,198 $440K
Quest Resource Holding Corp 0.2% Unchanged 295,587 $372K
FC First Carolina Financial Ser 0.2% New 26,733 $354K
Fractyl Health Inc 0.1% New 352,745 $280K
Canterbury Park Holding Corp 0.1% Unchanged 14,589 $230K
Harvard Bioscience Inc 0.1% New 33,369 $205K
Century Casinos Inc 0.1% Unchanged 136,001 $174K
Acorn Energy Inc 0.1% Unchanged 10,000 $170K
Access Newswire Inc 0.1% Unchanged 20,396 $133K
Xtant Medical Holdings Inc 0.0% Unchanged 109,466 $46.1K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 6 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
First Northwest Bancorp New +417,006 +$4.51M 2.0%
RT Rcm Technologies Inc New +134,688 +$3.8M 1.7%
MS Mdxhealth Sa-adr Exited −1,203,454 −$2.77M —
AI American Integrity Insurance Added +135,531 +$2.55M 8.1%
Friedman Industries Trimmed −78,729 −$2.53M 1.2%
Rimini Street Inc Added +448,523 +$1.91M 4.5%
Standard Biotools Inc New +2,190,973 +$1.8M 0.8%
Opus Genetics Inc Trimmed −429,347 −$1.76M 0.3%
Twin Disc Inc Exited −111,216 −$1.68M —
Creative Realities Inc Added +403,575 +$1.67M 2.1%

Showing the 10 largest of 47 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 01, 2026

Company Action Shares changed Value of change % of portfolio
Opus Genetics Inc Trimmed −1,075,079 −$4.89M 1.5%
Crawford United Corporation Exited −46,400 −$3.77M —
AI American Integrity Insurance Added +194,033 +$3.74M 9.1%
Creative Realities Inc New +763,379 +$2.63M 1.5%
MS Mdxhealth Sa-adr Added +940,034 +$2.16M 1.5%
Twin Disc Inc Trimmed −135,138 −$2.04M 0.9%
Rimini Street Inc Added +620,089 +$2.03M 3.5%
CH Comstock Homebuilding Cos-a Added +103,305 +$1.96M 1.3%
Acres Commercial Realty Corp New +92,430 +$1.79M 1.0%
Ascent Industries Co Added +130,004 +$1.73M 6.6%

Showing the 10 largest of 46 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 13, 2026

Company Action Shares changed Value of change % of portfolio
Duos Technologies Group Inc Trimmed −682,079 −$7.67M 0.7%
AI American Integrity Insurance Added +169,932 +$3.54M 8.5%
Rimini Street Inc Added +550,167 +$2.13M 3.2%
Legacy Education Inc New +202,333 +$2.06M 1.3%
Exagen Inc Added +313,727 +$1.91M 1.4%
Electrovaya Inc Trimmed −236,467 −$1.87M 0.5%
Regis Corp Added +59,846 +$1.66M 1.2%
Forte Biosciences Inc Exited −81,312 −$1.22M —
Twin Disc Inc Trimmed −52,166 −$870K 2.6%
Opus Genetics Inc Added +427,684 +$860K 2.1%

Showing the 10 largest of 39 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Duos Technologies Group Inc New +782,079 +$5.76M 3.9%
Twin Disc Inc Added +237,073 +$3.3M 2.8%
Rimini Street Inc Added +699,574 +$3.27M 2.4%
Red Robin Gourmet Burgers New +459,452 +$3.15M 2.1%
Butler National Corp New +1,032,137 +$2.04M 1.4%
Sr Bancorp Inc Exited −96,963 −$1.31M —
Amrep Corp New +50,000 +$1.2M 0.8%
AI American Integrity Insurance Added +51,933 +$1.16M 7.2%
Dlh Holdings Corp Added +199,584 +$1.13M 9.8%
Friedman Industries Trimmed −47,880 −$1.05M 2.2%

Showing the 10 largest of 45 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
AI American Integrity Insurance New +426,540 +$7.84M 6.8%
Dlh Holdings Corp Added +928,258 +$5.42M 12.0%
Sr Bancorp Inc Trimmed −265,989 −$3.59M 1.1%
Ascent Industries Co Trimmed −200,697 −$2.53M 8.8%
Acme United Corp Added +58,601 +$2.43M 13.6%
Bank7 Corp Added +47,697 +$2M 17.0%
Eton Pharmaceuticals Inc Trimmed −126,349 −$1.8M 0.2%
Fitlife Brands Inc Exited −76,766 −$929K —
Exagen Inc New +130,000 +$907K 0.8%
Crawford United Corporation Added +16,010 +$793K 1.9%

Showing the 10 largest of 39 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 14, 2025

Company Action Shares changed Value of change % of portfolio
Eton Pharmaceuticals Inc Trimmed −314,317 −$4.08M 1.9%
Acme United Corp Added +58,729 +$2.33M 13.3%
Fitlife Brands Inc Exited −38,383 −$1.25M —
Envela Corporation Added +156,754 +$977K 8.5%
Sr Bancorp Inc Added +78,811 +$940K 4.6%
Fitlife Brands Inc New +76,766 +$929K 1.0%
Opus Genetics Inc New +810,080 +$795K 0.8%
CE Currency Exchange Internatio Added +51,711 +$748K 8.6%
Kvh Industries Inc New +83,301 +$441K 0.5%
Codexis Inc New +126,642 +$341K 0.4%

Showing the 10 largest of 22 changes.

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