Merrion Investment Management Co, LLC reported 96 positions worth $184.28M for the quarter ended Sep 30, 2026, down 4.3% on the prior quarter. It opened 7 new positions, added to 8, trimmed 38 and exited 4. Its largest holding is Alphabet Inc. at 8.1% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| VAL Valaris Ltd | +21.0K | – | $1.65M | 0.895% |
| CW Curtiss Wright Corp | +1,470 | – | $799.42K | 0.434% |
| NVEC Nve Corp | +4,325 | +10.0% | $476.10K | 2.84% |
| EQX Equinox Gold Corp. | +38.1K | – | $423.29K | 0.23% |
| HON Honeywell International Inc | +1,680 | – | $354.38K | 0.192% |
| PANW Palo Alto Networks Inc | +750 | +34.8% | $297.98K | 0.626% |
| CRWD CrowdStrike Holdings, Inc. | +1,000 | – | $264.75K | 0.144% |
| HONA Honeywell Aerospace Inc. | +1,680 | – | $260.35K | 0.141% |
| FLS Flowserve Corp | +3,000 | – | $219.36K | 0.119% |
| MPC Marathon Petroleum Corp | +435 | +2.8% | $172.01K | 3.44% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| MGM MGM Resorts International | -109.3K | -100.0% | $5.22M | Exited |
| MU Micron Technology Inc | -1,900 | -51.2% | $2.02M | 1.05% |
| VRT Vertiv Holdings Co | -4,212 | -18.7% | $1.02M | 2.39% |
| OLN OLIN Corp | -23.6K | -65.2% | $365.80K | 0.106% |
| LNG Cheniere Energy, Inc. | -1,000 | -40.0% | $269.03K | 0.219% |
| NRG Nrg Energy, Inc. | -1,635 | -100.0% | $238.81K | Exited |
| LHX L3Harris Technologies, Inc. | -814 | -100.0% | $236.54K | Exited |
| ICE Intercontinental Exchange, Inc. | -1,500 | -49.4% | $228.04K | 0.127% |
| NFLX Netflix Inc | -3,100 | -29.9% | $215.70K | 0.275% |
| BRK-B Berkshire Hathaway Inc | -430 | -4.2% | $214.12K | 2.65% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| VAL Valaris Ltd | +21.0K | $1.65M | 0.895% |
| CW Curtiss Wright Corp | +1,470 | $799.42K | 0.434% |
| EQX Equinox Gold Corp. | +38.1K | $423.29K | 0.23% |
| HON Honeywell International Inc | +1,680 | $354.38K | 0.192% |
| CRWD CrowdStrike Holdings, Inc. | +1,000 | $264.75K | 0.144% |
| HONA Honeywell Aerospace Inc. | +1,680 | $260.35K | 0.141% |
| FLS Flowserve Corp | +3,000 | $219.36K | 0.119% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | GOOG Alphabet Inc. | Technology | 43.9K | $14.96M | 8.12% | -175 | -0.4% | Reduced | 0% |
| 2 | NVDA Nvidia Corp | Technology | 64.6K | $14.77M | 8.01% | -325 | -0.5% | Reduced | 0% |
| 3 | AAPL Apple Inc. | Technology | 37.7K | $12.56M | 6.82% | -85 | -0.2% | Reduced | 0% |
| 4 | NMM Navios Maritime Partners L.P. | Industrials | 89.5K | $8.04M | 4.36% | 0 | 0.0% | Unchanged | 0.31% |
| 5 | GSAT Globalstar, Inc. | Communication Services | 95.2K | $7.89M | 4.28% | 0 | 0.0% | Unchanged | 0.07% |
| 6 | JEF Jefferies Financial Group Inc. | Financial Services | 147.9K | $6.76M | 3.67% | 0 | 0.0% | Unchanged | 0.06% |
| 7 | MPC Marathon Petroleum Corp | Energy | 16.1K | $6.35M | 3.44% | +435 | +2.8% | Added | 0.01% |
| 8 | GLW Corning Inc | Basic Materials | 40.9K | $6.28M | 3.41% | -500 | -1.2% | Reduced | 0% |
| 9 | ECHO EchoStar CORP | Communication Services | 65.0K | $5.81M | 3.15% | -1,580 | -2.4% | Reduced | 0.02% |
| 10 | GS Goldman Sachs Group Inc | Financial Services | 5,854 | $5.27M | 2.86% | +50 | +0.9% | Added | 0% |
| 11 | NVEC Nve Corp | Technology | 47.6K | $5.24M | 2.84% | +4,325 | +10.0% | Added | 0.98% |
| 12 | GEV GE Vernova Inc. | Industrials | 5,307 | $5.04M | 2.74% | -95 | -1.8% | Reduced | 0% |
| 13 | BRK-B Berkshire Hathaway Inc | Financial Services | 9,807 | $4.88M | 2.65% | -430 | -4.2% | Reduced | 0% |
| 14 | VRT Vertiv Holdings Co | Industrials | 18.3K | $4.41M | 2.39% | -4,212 | -18.7% | Reduced | 0% |
| 15 | CNQ CANADIAN NATURAL RESOURCES Ltd | Energy | 78.8K | $3.74M | 2.03% | 0 | 0.0% | Unchanged | 0% |
Tip. Select a row to see that position’s full history at Merrion Investment Management.
As of its Q3 2026 13F filing, Merrion Investment Management Co, LLC’s five largest positions were Alphabet Inc. (GOOG) at 8.1%, Nvidia Corp (NVDA) at 8.0%, Apple Inc. (AAPL) at 6.8%, Navios Maritime Partners L.P. (NMM) at 4.4%, Globalstar, Inc. (GSAT) at 4.3% of the reported portfolio.
Merrion Investment Management Co, LLC reported a 13F portfolio worth $184.28M across 96 positions for Q3 2026. That is down 4.3% from the previous quarter.
Its largest purchases by value were Valaris Ltd ($1.65M), Curtiss Wright Corp ($799.42K), Nve Corp ($476.10K). It opened 7 new positions.
Its largest sales by value were MGM Resorts International ($5.22M), Micron Technology Inc ($2.02M), Vertiv Holdings Co ($1.02M). It exited 4 positions entirely.
From the Form 13F-HR reports Merrion Investment Management Co, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.