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Super Investors Merrion Investment Management Co, LLC
MI

Merrion Investment Management Co, LLC

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

Portfolio value
$202M
Positions
109
Quarter ended
September 30, 2026
Filed
October 16, 2026

Reported portfolio value by quarter (24 quarters reported)

$211M $101M
Q4 20 Q1 22 Q2 23 Q3 24 Q4 25 Q3 26

$118M in Q4 2020 → $202M now. Hover for any quarter.

Holdings

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

Holding % of portfolio Activity Shares Value
Alphabet Inc 7.4% Trimmed 0.4% 43,897 $15M
Nvidia Corporation 7.3% Trimmed 0.5% 64,600 $14.8M
Apple Inc 6.2% Trimmed 0.2% 37,712 $12.6M
NM Navios Maritime Partners LP 4.0% Unchanged 89,465 $8.04M
Globalstar Inc 3.9% Unchanged 95,181 $7.89M
Cameco Corp 3.4% Trimmed 3.2% 78,500 $6.8M
JF Jefferies Financial Group In 3.4% Unchanged 147,895 $6.76M
MP Marathon Pete Corp 3.1% Added 2.8% 16,054 $6.35M
Corning Inc 3.1% Trimmed 1.2% 40,850 $6.28M
Echostar Corp 2.9% Trimmed 2.4% 65,000 $5.81M
Goldman Sachs Group Inc 2.6% Added 0.9% 5,854 $5.27M
Nve Corp 2.6% Added 10.0% 47,590 $5.24M
Ge Vernova Inc 2.5% Trimmed 1.8% 5,307 $5.04M
BH Berkshire Hathaway Inc Del 2.4% Trimmed 4.2% 9,807 $4.88M
Vertiv Holdings Co 2.2% Trimmed 19% 18,288 $4.41M
CN Canadian Nat Res Ltd Med Ter 1.9% Unchanged 78,800 $3.74M
Halliburton Co 1.7% Trimmed 2.0% 108,700 $3.46M
SS State Str SPDR S&P 500 ETF T 1.7% Trimmed 0.3% 4,515 $3.44M
Microsoft Corp 1.5% Trimmed 1.6% 6,065 $3.11M
TF Triple Flag Precious Metal 1.4% Trimmed 0.0% 90,200 $2.78M
Johnson & Johnson 1.2% Trimmed 0.7% 8,804 $2.33M
Oracle Corp 1.1% Trimmed 3.0% 15,900 $2.18M
Micron Technology Inc 1.0% Trimmed 51% 1,813 $1.93M
Abbvie Inc 0.9% Unchanged 7,000 $1.83M
FC First Ctzns Bancshares Inc D 0.9% Trimmed 0.9% 868 $1.79M
EL Eli Lilly & Co 0.9% Trimmed 0.3% 1,545 $1.79M
AI American Intl Group Inc 0.9% Trimmed 2.0% 23,900 $1.78M
Valaris Ltd 0.8% New 21,000 $1.65M
Constellation Energy Corp 0.8% Trimmed 8.0% 6,350 $1.61M
Exxonmobil Holdings Corp 0.8% New 9,770 $1.59M
Amazon Com Inc 0.8% Unchanged 6,190 $1.54M
IQ Invesco Qqq Tr 0.7% Trimmed 0.2% 2,030 $1.5M
GA Ge Aerospace 0.7% Trimmed 1.3% 4,615 $1.44M
Jpmorgan Chase & Co 0.7% Added 12% 4,327 $1.43M
Vitesse Energy Inc 0.7% Trimmed 2.8% 85,529 $1.43M
DG Dollar Gen Corp 0.7% Trimmed 1.1% 11,625 $1.39M
Noble Corp PLC 0.6% Unchanged 30,000 $1.25M
Palo Alto Networks Inc 0.6% Added 35% 2,904 $1.15M
ET Energy Transfer L P 0.6% Unchanged 58,000 $1.15M
EH Elevance Health Inc Formerly 0.6% Trimmed 1.2% 2,940 $1.14M
GA Gallagher Arthur J & Co 0.6% Unchanged 5,000 $1.14M
Caterpillar Inc 0.5% Unchanged 1,300 $1.05M
Baker Hughes Company 0.5% Trimmed 1.1% 18,800 $1.03M
RU Reaves Util Income Fd 0.5% Unchanged 30,000 $1.03M
Costco Wholesale Corporation 0.5% Unchanged 1,100 $1M
IT Ishares Tr 0.5% Unchanged 1,750 $995K
Bwx Technologies Inc 0.5% Trimmed 1.2% 7,240 $992K
Chevron Corporation 0.5% Added 11% 4,831 $987K
Chubb Limited 0.4% Unchanged 2,771 $904K
SG SPDR Gold Tr 0.4% Unchanged 2,350 $895K
WC Williams Cos Inc 0.4% Unchanged 12,700 $863K
Teck Resources Ltd 0.4% Trimmed 1.3% 12,989 $855K
Transocean Ltd 0.4% Unchanged 162,800 $853K
Qualcomm Inc 0.4% Trimmed 1.3% 4,550 $837K
Meta Platforms Inc 0.4% Added 3.6% 1,140 $827K
EP Enterprise Prods Partners L 0.4% Trimmed 0.4% 22,624 $806K
SP Simon Ppty Group Inc New 0.4% Unchanged 4,000 $803K
Curtiss Wright Corp 0.4% New 1,470 $799K
TN Tidewater Inc New 0.4% Trimmed 1.0% 9,810 $796K
NA Novo-nordisk A S 0.4% Trimmed 1.2% 19,330 $733K

Showing top 60 of 109 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 16, 2026

Company Action Shares changed Value of change % of portfolio
Mgm Resorts International Exited −109,260 −$5.22M —
Micron Technology Inc Trimmed −1,900 −$2.02M 1.0%
Valaris Ltd New +21,000 +$1.65M 0.8%
Exxonmobil Holdings Corp New +9,770 +$1.59M 0.8%
Exxon Mobil Corp Exited −9,770 −$1.34M —
Vertiv Holdings Co Trimmed −4,212 −$1.02M 2.2%
Curtiss Wright Corp New +1,470 +$799K 0.4%
Nve Corp Added +4,325 +$476K 2.6%
Equinox Gold Corp New +38,100 +$423K 0.2%
ON Oneok Inc New Exited −4,500 −$391K —

Showing the 10 largest of 67 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 13, 2026

Company Action Shares changed Value of change % of portfolio
Globalstar Inc Added +51,500 +$4.19M 3.7%
Micron Technology Inc Trimmed −2,292 −$2.65M 2.0%
JF Jefferies Financial Group In Trimmed −50,800 −$2.54M 3.5%
NA Novo-nordisk A S New +19,565 +$938K 0.4%
HI Honeywell Intl Inc Exited −3,404 −$769K —
Vertex Pharmaceuticals Inc Exited −1,250 −$558K —
EL Eli Lilly & Co Added +450 +$540K 0.9%
Newmont Corp New +5,085 +$475K 0.2%
AH Asml Hldg Nv New +201 +$400K 0.2%
IT Ishares Tr New +1,620 +$393K 0.2%

Showing the 10 largest of 42 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 23, 2026

Company Action Shares changed Value of change % of portfolio
Cameco Corp Trimmed −66,200 −$7.19M 4.7%
Echostar Corp Added +17,095 +$2M 4.2%
TN Tidewater Inc New New +9,910 +$828K 0.4%
NM Navios Maritime Partners LP Added +11,165 +$753K 3.2%
OM Orla Mng Ltd New Exited −55,400 −$746K —
Transocean Ltd New +92,500 +$613K 0.3%
Linde PLC Exited −1,017 −$434K —
Costco Wholesale Corporation Trimmed −400 −$399K 0.6%
Sap Se Exited −1,500 −$364K —
Blackstone Inc Exited −2,000 −$308K —

Showing the 10 largest of 39 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Echostar Corp New +49,610 +$5.39M 2.9%
Cameco Corp Trimmed −53,200 −$4.87M 7.3%
Oracle Corp New +16,400 +$3.2M 1.7%
Micron Technology Inc Trimmed −5,005 −$1.43M 1.0%
Vertiv Holdings Co Trimmed −7,500 −$1.22M 2.0%
EH Elevance Health Inc Formerly New +2,975 +$1.04M 0.6%
Netflix Inc Added +10,440 +$979K 0.6%
ET Energy Transfer L P New +58,000 +$956K 0.5%
Corning Inc Trimmed −9,000 −$788K 2.0%
DG Dollar Gen Corp New Added +4,940 +$656K 0.8%

Showing the 10 largest of 45 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 15, 2025

Company Action Shares changed Value of change % of portfolio
Alphabet Inc Trimmed −11,505 −$2.8M 6.3%
FC First Ctzns Bancshares Inc D Added +640 +$1.15M 0.9%
DG Dollar Gen Corp New New +6,815 +$704K 0.4%
Olin Corp Added +19,735 +$493K 0.4%
PA Procter And Gamble Co Trimmed −2,280 −$350K 0.2%
Aerovironment Inc New +1,000 +$315K 0.2%
IE Invesco Exch Traded Fd Tr Ii Exited −3,500 −$255K —
IS Ishares Silver Tr New +6,000 +$254K 0.1%
QS Quanta Svcs Inc New +600 +$249K 0.1%
OM Orla Mng Ltd New Added +20,000 +$216K 0.3%

Showing the 10 largest of 36 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 07, 2025

Company Action Shares changed Value of change % of portfolio
Apple Inc Trimmed −9,894 −$2.03M 5.0%
Cameco Corp Trimmed −10,500 −$779K 9.7%
Baker Hughes Company New +19,000 +$728K 0.5%
BH Berkshire Hathaway Inc Del Trimmed −1,342 −$652K 3.2%
Nvidia Corporation Trimmed −2,670 −$422K 6.7%
OM Orla Mng Ltd New New +35,400 +$355K 0.2%
Palantir Technologies Inc New +2,250 +$307K 0.2%
Johnson & Johnson Trimmed −2,000 −$305K 1.0%
Nrg Energy Inc New +1,635 +$263K 0.2%
JF Jefferies Finl Group Inc Trimmed −4,300 −$235K 7.4%

Showing the 10 largest of 59 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 21, 2025

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +59,600 +$6.46M 5.3%
Navios Maritime Partners L P Added +49,960 +$1.96M 1.7%
AI American Intl Group Inc Added +18,400 +$1.6M 1.9%
Globalstar Inc Exited −655,261 −$1.36M —
Mgm Resorts International Added +40,700 +$1.21M 2.5%
Constellation Energy Corp Added +5,065 +$1.02M 1.0%
Cameco Corp Trimmed −24,450 −$1.01M 6.2%
Globalstar Inc New +43,681 +$911K 0.7%
SS SPDR S&P 500 ETF Tr Trimmed −821 −$459K 1.9%
VI Vanguard Index Fds New +2,275 +$393K 0.3%

Showing the 10 largest of 59 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 23, 2025

Company Action Shares changed Value of change % of portfolio
WC Williams Cos Inc Trimmed −172,800 −$9.35M 0.5%
Huntsman Corp Exited −136,076 −$3.29M —
Alphabet Inc Trimmed −10,225 −$1.95M 7.5%
AI American Intl Group Inc New +12,000 +$874K 0.6%
Apple Inc Trimmed −2,805 −$702K 8.4%
LI Lyondellbasell Industries N New +6,775 +$503K 0.4%
Cheniere Energy Inc New +2,000 +$430K 0.3%
IT Ishares Tr Exited −2,000 −$291K —
Lockheed Martin Corp Exited −495 −$289K —
EL Eli Lilly & Co Trimmed −350 −$270K 0.9%

Showing the 10 largest of 45 changes.

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