Merrion Investment Management Co, LLC

CIK 1383782 · View on SEC EDGAR ↗

Portfolio value QoQ: -4.6% 13F does not disclose cash

Top 10 holdings weight44.74%

Top 25 holdings weight70.25%

Positions above 1%22

Effective number of positions34.2

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q3 2026: 3.68% Est. buys $7,604,547 · sells $13,306,460

Median holding: 7.0 quarters Tracked Q1 2025–Q3 2026 · 81.3% still held

New positions9

Increased11

Decreased41

Closed6

Portfolio value $201.7M #6,584 of 9,339 by 13F value · top 70.5%

Positions 109

As of Sept. 30, 2026

Performance vs S&P 500

Tracked Q1 2025–Q3 2026 +60.6%

S&P 500 total return (same window) +39.9%

Excess return +20.7%

Annualized: +37.1% · S&P 500: +25.1%

Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.

Priceable coverage: 94.7% · Options excluded: 0.0%

Sector breakdown

Technology 21.2%

Energy 16.3%

Communication Services 15.1%

Industrials 15.1%

Financials 13.7%

Healthcare 4.4%

Retail 2.5%

Materials 2.2%

Utilities 1.2%

Real Estate 0.4%

Consumer Discretionary 0.4%

Consumer products 0.1%

Other/Unmapped 7.4%

Full portfolio 109 positions

Search positions by ticker or company name

					Streak
GOOG Alphabet Inc. - Class C Capital Stock	$14,957,464	7.42%	43,897	$-614,496	Down ×2
NVDA NVIDIA Corporation - Common Stock	$14,769,484	7.32%	64,600	$1,778,644	Down ×1
AAPL Apple Inc. - Common Stock	$12,558,850	6.23%	37,712	$1,621,910	Down ×1
NMM Navios Maritime Partners LP Common Units Representing Limited Partner Interests	$8,043,798	3.99%	89,465	$1,774,988
GSAT Globalstar, Inc. - Common Stock	$7,889,553	3.91%	95,181	$152,293
CCJ Cameco Corporation Common Stock	$6,803,595	3.37%	78,500	$-1,457,255	Down ×1
JEF Jefferies Financial Group Inc. Common Stock	$6,763,238	3.35%	147,895	$-628,552
MPC Marathon Petroleum Corporation Common Stock	$6,348,182	3.15%	16,054	$2,354,872	Up ×1
GLW Corning Incorporated Common Stock	$6,281,096	3.11%	40,850	$-4,280,934	Down ×1
SATS EchoStar Corporation - Common stock	$5,811,650	2.88%	65,000	$-946,220	Down ×2
GS Goldman Sachs Group, Inc. (The) Common Stock	$5,270,707	2.61%	5,854	$-599,283	Up ×1
NVEC NVE Corporation - Common Stock	$5,238,707	2.60%	47,590	$715,347	Up ×2
GEV GE Vernova Inc. Common Stock	$5,044,250	2.50%	5,307	$-1,302,340	Down ×4
BRK-B (filed as BRKB) Berkshire Hathaway Inc. Class B	$4,883,396	2.42%	9,807	$-239,094	Down ×1
VRT Vertiv Holdings, LLC Class A Common Stock	$4,413,077	2.19%	18,288	$-3,120,373	Down ×1
CNQ Canadian Natural Resources Limited Common Stock	$3,743,626	1.86%	78,800	$631,026
HAL Halliburton Company Common Stock	$3,456,660	1.71%	108,700	$-308,400	Down ×1
SPY SPY	$3,443,274	1.71%	4,515	$60,404	Down ×2
MSFT Microsoft Corporation - Common Stock	$3,110,739	1.54%	6,065	$811,069	Down ×4
TFPM Triple Flag Precious Metals Corp. Common Shares	$2,779,062	1.38%	90,200	$74,572	Down ×1
JNJ Johnson & Johnson Common Stock	$2,330,771	1.16%	8,804	$79,581	Down ×1
ORCL Oracle Corporation Common Stock	$2,183,070	1.08%	15,900	$-220,350	Down ×1
MU Micron Technology, Inc. - Common Stock	$1,931,044	0.96%	1,813	$-2,354,836	Down ×5
ABBV AbbVie Inc. Common Stock	$1,831,130	0.91%	7,000	$69,650
FCNCA First Citizens BancShares, Inc. - Class A Common Stock	$1,788,254	0.89%	868	$-34,516	Down ×1
LLY Eli Lilly and Company Common Stock	$1,787,689	0.89%	1,545	$-71,431	Down ×1
AIG American International Group, Inc. New Common Stock	$1,778,638	0.88%	23,900	$-39,892	Down ×4
VAL Valaris Limited Common Shares	$1,648,920	0.82%	21,000		Up ×1
CEG Constellation Energy Corporation - Common Stock When-Issued	$1,613,027	0.80%	6,350	$-100,723	Down ×1
Unknown issuer (CUSIP: 30233Q108)	$1,590,068	0.79%	9,770		Up ×1
AMZN Amazon.com, Inc. - Common Stock	$1,542,239	0.76%	6,190	$66,919
QQQ Invesco QQQ Trust, Series 1	$1,501,733	0.74%	2,030	$3,163	Down ×1
GE GE Aerospace Common Stock	$1,441,218	0.71%	4,615	$-305,972	Down ×1
JPM JP Morgan Chase & Co. Common Stock	$1,431,501	0.71%	4,327	$164,081	Up ×1
VTS Vitesse Energy, Inc. Common Stock	$1,428,334	0.71%	85,529	$40,114	Down ×1
DG Dollar General Corporation Common Stock	$1,390,118	0.69%	11,625	$36,998	Down ×1
NE Noble Corporation plc A Ordinary Shares	$1,252,200	0.62%	30,000	$133,200
PANW Palo Alto Networks, Inc. - Common Stock	$1,153,788	0.57%	2,904	$419,228	Up ×1
ET Energy Transfer LP Common Units	$1,146,660	0.57%	58,000	$37,700
ELV Elevance Health, Inc. Common Stock	$1,143,131	0.57%	2,940	$-7,389	Down ×1
AJG Arthur J. Gallagher & Co. Common Stock	$1,140,550	0.57%	5,000	$-7,300
CAT Caterpillar, Inc. Common Stock	$1,054,027	0.52%	1,300	$-330,343
BKR Baker Hughes Company - Common Stock	$1,032,120	0.51%	18,800	$-22,380	Down ×1
UTG CUSIP: 756158101	$1,030,500	0.51%	30,000	$-191,100
COST Costco Wholesale Corporation - Common Stock	$1,001,374	0.50%	1,100	$-27,646
SOXX iShares Trust	$995,120	0.49%	1,750	$-126,210
BWXT BWX Technologies, Inc. Common Stock	$991,880	0.49%	7,240	$-434,900	Down ×1
CVX Chevron Corporation Common Stock	$986,539	0.49%	4,831	$263,659	Up ×1
CB Chubb Limited Common Stock	$904,094	0.45%	2,771	$-42,926
GLD SPDR Gold Shares	$894,974	0.44%	2,350	$29,284
WMB Williams Companies, Inc. (The) Common Stock	$863,219	0.43%	12,700	$-80,901
TECK Teck Resources Ltd Ordinary Shares	$854,546	0.42%	12,989	$72,406	Down ×1
RIG Transocean Ltd (Switzerland) Common Stock	$853,072	0.42%	162,800	$56,982
QCOM QUALCOMM Incorporated - Common Stock	$837,382	0.42%	4,550	$-14,498	Down ×1
META Meta Platforms, Inc. - Class A Common Stock	$826,705	0.41%	1,140	$207,085	Up ×1
EPD Enterprise Products Partners L.P. Common Stock	$805,641	0.40%	22,624	$-29,329	Down ×1
SPG Simon Property Group, Inc. Common Stock	$803,040	0.40%	4,000	$-91,560
CW Curtiss-Wright Corporation Common Stock	$799,415	0.40%	1,470		Up ×1
TDW Tidewater Inc. Common Stock	$795,591	0.39%	9,810	$135,291	Down ×1
NVO Novo Nordisk A/S Common Stock	$732,800	0.36%	19,330	$-205,150	Down ×1
PSX Phillips 66 Common Stock	$727,634	0.36%	2,850	$245,844
AMGN Amgen Inc. - Common Stock	$667,250	0.33%	1,583	$130,230	Up ×1
APO Apollo Global Management, Inc. (New) Common Stock	$661,542	0.33%	5,700	$-30,568	Down ×1
IWD iShares Trust	$649,577	0.32%	2,620	$256,837	Up ×1
MPLX MPLX LP Common Units Representing Limited Partner Interests	$649,088	0.32%	11,525	$-112
NEM Newmont Corporation	$576,123	0.29%	4,995	$101,183	Down ×1
VTV Vanguard Morningstar Value ETF	$572,612	0.28%	2,650	$-4,898
PEG Public Service Enterprise Group Incorporated Common Stock	$531,986	0.26%	7,900	$-109,174
WM Waste Management, Inc. Common Stock	$530,192	0.26%	2,600	$-49,298
WMT Walmart Inc. - Common Stock	$519,600	0.26%	5,000	$-46,700
HD Home Depot, Inc. (The) Common Stock	$519,194	0.26%	1,825	$-142,086	Down ×1
ITA iShares U.S. Aerospace & Defense ETF	$517,950	0.26%	2,500	$-88,100
PWR Quanta Services, Inc. Common Stock	$514,008	0.25%	800	$-62,022
NFLX Netflix, Inc. - Common Stock	$506,195	0.25%	7,275	$-234,585	Down ×3
RSP Invesco Exchange-Traded Fund Trust	$503,408	0.25%	2,420	$40,638	Up ×1
MLM Martin Marietta Materials, Inc. Common Stock	$479,810	0.24%	1,000	$-96,890
MSGS Madison Square Garden Sports Corp. Class A Common Stock (New)	$478,148	0.24%	1,180	$-14,102	Down ×1
IBB iShares Trust	$473,693	0.23%	2,250	$93,313	Up ×1
MS Morgan Stanley Common Stock	$470,200	0.23%	2,500	$-52,400
PNC PNC Financial Services Group, Inc. (The) Common Stock	$466,746	0.23%	2,100	$-50,314
TSLX Sixth Street Specialty Lending, Inc. Common Stock	$450,500	0.22%	25,000	$21,250
EQX CUSIP: 29446Y502	$423,291	0.21%	38,100		Up ×1
MA Mastercard Incorporated Common Stock	$413,603	0.21%	750	$28,403
TSLA Tesla, Inc. - Common Stock	$409,806	0.20%	1,155	$-75,984
LNG Cheniere Energy, Inc. Common Stock	$403,545	0.20%	1,500	$-193,985	Down ×1
AXP American Express Company Common Stock	$384,991	0.19%	1,266	$-43,229
Unknown issuer (CUSIP: 30609A109)	$383,715	0.19%	4,500		Up ×1
SLV iShares Silver Trust	$381,570	0.19%	7,000	$7,280
PLTR Palantir Technologies Inc. - Class A Common Stock	$374,100	0.19%	2,000	$140,760
ASML ASML Holding N.V. - New York Registry Shares	$364,146	0.18%	201	$-35,734
V Visa Inc.	$359,330	0.18%	1,000	$16,240
Unknown issuer (CUSIP: 438516205)	$354,379	0.18%	1,680		Up ×1
HLT Hilton Worldwide Holdings Inc. Common Stock	$318,120	0.16%	1,000	$-12,340
QTUM Defiance Quantum ETF	$303,240	0.15%	2,000	$-27,520
NEE NextEra Energy, Inc. Common Stock	$298,037	0.15%	3,935	$-47,333
NVS Novartis AG Common Stock	$296,546	0.15%	2,080	$-29,434
PFF iShares Preferred and Income Securities ETF	$295,000	0.15%	10,000	$-9,900
IVV iShares Core S&P 500 ETF	$292,555	0.15%	382	$6,475
MYRG MYR Group, Inc. - Common Stock	$292,460	0.15%	1,000	$-207,940
PG Procter & Gamble Company (The) Common Stock	$292,158	0.14%	2,011	$-2,732
No matches

Biggest new bets

New positions opened this quarter, largest first.

Security	Value	Shares	% of portfolio
VAL	$1,648,920	21,000	0.82%
Unknown issuer (CUSIP: 30233Q108)	$1,590,068	9,770	0.79%
CW	$799,415	1,470	0.40%
EQX	$423,291	38,100	0.21%
Unknown issuer (CUSIP: 30609A109)	$383,715	4,500	0.19%
Unknown issuer (CUSIP: 438516205)	$354,379	1,680	0.18%
CRWD	$264,750	1,000	0.13%
Unknown issuer (CUSIP: 43849R105)	$260,350	1,680	0.13%
FLS	$219,360	3,000	0.11%

Top movers (QoQ)

Security	Action	Shares Δ	Value Δ
GLW	Trimmed	-500	-$4.3M
VRT	Trimmed	-4K	-$3.1M
MPC	Bought more	+435	+$2.4M
MU	Trimmed	-2K	-$2.4M
NVDA	Trimmed	-325	+$1.8M
NMM	Price move only	+0	+$1.8M
AAPL	Trimmed	-85	+$1.6M
CCJ	Trimmed	-3K	-$1.5M
GEV	Trimmed	-95	-$1.3M
SATS	Trimmed	-2K	-$946K

Exited positions

Includes corporate events (mergers, delistings) — not all exits are sells

Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.

Security	Quarter	Shares before	Value before	Price since exit
MGM	Sept. 30, 2026	109,260	$5,223,720	-8.1%
XOM	Sept. 30, 2026	9,770	$1,335,750	12.6%
HON	June 30, 2026	3,404	$769,400	-2.1%
ORLA	March 31, 2026	55,400	$746,238	No longer tracked
VRTX	June 30, 2026	1,250	$558,170	5.5%
LIN	March 31, 2026	1,017	$433,639	2.4%
OKE	Sept. 30, 2026	4,500	$391,230	13.0%
SAP	March 31, 2026	1,500	$364,365	39.3%
MRSH	June 30, 2026	2,031	$352,270	16.8%
BX	March 31, 2026	2,000	$308,280	3.4%
MCK	June 30, 2026	350	$303,160	31.4%
TSCO	Dec. 31, 2025	5,000	$284,350	-33.2%
SPLV	Sept. 30, 2025	3,500	$254,870
WCN	June 30, 2026	1,500	$243,660	11.9%
XYL	June 30, 2026	2,000	$239,000	-8.0%
NRG	Sept. 30, 2026	1,635	$238,810	-2.1%
LHX	Sept. 30, 2026	814	$236,540	9.9%
AVAV	June 30, 2026	1,250	$228,810	-23.9%
LYB	March 31, 2026	5,280	$228,624	-16.4%
FCX	June 30, 2025	6,000	$227,160	50.3%
KW	June 30, 2026	20,000	$216,400	No longer tracked
COP	June 30, 2025	2,055	$215,816	65.6%
UBER	Sept. 30, 2026	2,890	$208,540	-2.6%
NOW	Sept. 30, 2025	200	$205,610
OWL	March 31, 2026	10,000	$149,400	2.3%