Merrion Investment Management Co, LLC — 13F Holdings & Portfolio

CIK 1383782 · latest 13F-HR filed 2026-10-16

Merrion Investment Management Co, LLC manages $201.7M in 13F-reported U.S. long-equity assets across 109 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are GOOG (7.42%), NVDA (7.32%), AAPL (6.23%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 9 new positions and exited 6; 23 existing positions rose in reported value and 42 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

AUM

$201.7M

Long-equity book

Holdings

109

Distinct positions

Period

2026-09-30

Filed 2026-10-16

Q/Q Activity

+9 / −6 / ↑23 / ↓42

vs 2026-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 26

GOOG7.4% · -0%NVDA7.3% · -0%AAPL6.2% · -0%NMM4.0% · 0%GSAT3.9% · 0%CCJ3.4% · -3%JEF3.4% · 0%MPC3.1% · +3%GLW3.1% · -1%ECHO2.9% · new GS2.6% · +1%NVEC2.6% · +10%GEV2.5% · -2%BRK.B2.4% · -4%VRT2.2% · -19%CNQ1.9% · 0%HAL1.7% · -2%SPY1.7% · -0%MSFT1.5% · -2%TFPM1.4% · -0%JNJ1.2% · -1%ORCL1.1% · -3%MU1.0% · -51%ABBV0.9% · 0%FCNCA0.9% · -1%LLY0.9% · -0%AIG0.9% · -2%VAL0.8% · new CEG0.8% · -8%XOM0.8% · 0%AMZN0.8% · 0%QQQ0.7% · -0%GE0.7% · -1%JPM0.7% · +12%VTS0.7% · -3%DG0.7% · -1%NE0.6% · 0%PANW0.6% · +35%ET0.6% · 0%ELV0.6% · -1%AJG0.6% · 0%CAT0.5% · 0%BKR0.5% · -1%UTG0.5% · 0%COST0.5% · 0%SOXX0.5% · 0%BWXT0.5% · -1%CVX0.5% · +11%CB0.4% · 0%GLD0.4% · 0%WMB0.4% · 0%TECK0.4% · -1%RIG0.4% · 0%QCOM0.4% · -1%META0.4% · +4%EPD0.4% · -0%SPG0.4% · 0%CW0.4% · new TDW0.4% · -1%NVO0.4% · -1%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 26 → Q3 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 44.7%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Oct 22, 2026.

Assets Under Management

$244.8M

Discretionary

$244.8M

Employees

Accounts

Address

184 NORTH AVE. EAST
CRANFORD, NJ 07016

Phone

(908) 654-0033

Website

WWW.MERRIONGROUP.NET

Name	Title / Status	Ownership	Type
ERB, DAVID, EDWIN Control	CHIEF EXECUTIVE OFFICER since Nov 2005	Less than 5%	Individual
MERRION FINANCIAL GROUP, LLC Control	MANAGING MEMBER since Nov 2005	75% or more	Domestic Entity
ROGERS, RANDOLPH, CHRISTIAN Control	CHIEF COMPLIANCE OFFICER/CFO since Nov 2005	Less than 5%	Individual
WIGTON, WILLIAM, BENSON Control	CHAIRMAN since Nov 2005	Less than 5%	Individual
WIGTON, WILLIAM, BENSON Control Indirect owner via MERRION FINANCIAL GROUP, LLC	MANAGING MEMBER since Nov 2005	75% or more	Individual

Ownership & leadership changes · 2 filings with changes since Feb 29, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Mar 31, 2022 filing

No longer listedWEIL, ALEXANDER, CHARLES · CHIEF OPERATING OFFICER · Less than 5% · control person · listed since Jul 2010

Mar 6, 2018 filing

No longer listedMILLER, JOEL, WILLIAM · MANAGING DIRECTOR · Less than 5% · control person · listed since Nov 2005

Feb 29, 2012 filing (earliest on record)

ListedERB, DAVID, EDWIN · CHIEF EXECUTIVE OFFICER · Less than 5% · control person
ListedMERRION FINANCIAL GROUP, LLC · MANAGING MEMBER · 75% or more · control person
ListedMILLER, JOEL, WILLIAM · MANAGING DIRECTOR · Less than 5% · control person
ListedROGERS, RANDOLPH, CHRISTIAN · CHIEF COMPLIANCE OFFICER/CFO · Less than 5% · control person
ListedWEIL, ALEXANDER, CHARLES · CHIEF OPERATING OFFICER · Less than 5% · control person
ListedWIGTON, WILLIAM, BENSON · MANAGING MEMBER · 75% or more · indirect via MERRION FINANCIAL GROUP, LLC · control person
ListedWIGTON, WILLIAM, BENSON · CHAIRMAN · Less than 5% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

MARATHON PETE CORP$2.4M +59.0%
NVIDIA CORPORATION$1.8M +13.7%
NAVIOS MARITIME PARTNERS LP$1.8M +28.3%
APPLE INC$1.6M +14.8%
MICROSOFT CORP$811.1K +35.3%

Show all 23 →

Top Trims

CORNING INC-$4.3M -40.5%
VERTIV HOLDINGS CO-$3.1M -41.4%
MICRON TECHNOLOGY INC-$2.4M -54.9%
CAMECO CORP-$1.5M -17.6%
GE VERNOVA INC-$1.3M -20.5%

Show all 42 →

New Positions

Show all 9 →

Exited Positions

Show all 6 →

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#	Issuer	Symbol	CUSIP	Value	Δ

Merrion Investment Management Co, LLC Holdings (2026-09-30)

#	Issuer	Symbol	CUSIP	Value	Weight	Shares	Type
1	ALPHABET INC	GOOG	02079K107	$15.0M	7.42%	43,897	SH
2	NVIDIA CORPORATION	NVDA	67066G104	$14.8M	7.32%	64,600	SH
3	APPLE INC	AAPL	037833100	$12.6M	6.23%	37,712	SH
4	NAVIOS MARITIME PARTNERS LP	NMM	Y62267409	$8.0M	3.99%	89,465	SH
5	GLOBALSTAR INC	GSAT	378973507	$7.9M	3.91%	95,181	SH
6	CAMECO CORP	CCJ	13321L108	$6.8M	3.37%	78,500	SH
7	JEFFERIES FINANCIAL GROUP IN	JEF	47233W109	$6.8M	3.35%	147,895	SH
8	MARATHON PETE CORP	MPC	56585A102	$6.3M	3.15%	16,054	SH
9	CORNING INC	GLW	219350105	$6.3M	3.11%	40,850	SH
10	ECHOSTAR CORP	ECHO	278768106	$5.8M	2.88%	65,000	SH
11	GOLDMAN SACHS GROUP INC	GS	38141G104	$5.3M	2.61%	5,854	SH
12	NVE CORP	NVEC	629445206	$5.2M	2.60%	47,590	SH
13	GE VERNOVA INC	GEV	36828A101	$5.0M	2.50%	5,307	SH
14	BERKSHIRE HATHAWAY INC DEL	BRK.B	084670702	$4.9M	2.42%	9,807	SH
15	VERTIV HOLDINGS CO	VRT	92537N108	$4.4M	2.19%	18,288	SH
16	CANADIAN NAT RES LTD MED TER	CNQ	136385101	$3.7M	1.86%	78,800	SH
17	HALLIBURTON CO	HAL	406216101	$3.5M	1.71%	108,700	SH
18	STATE STR SPDR S&P 500 ETF T	SPY	78462F103	$3.4M	1.71%	4,515	SH
19	MICROSOFT CORP	MSFT	594918104	$3.1M	1.54%	6,065	SH
20	TRIPLE FLAG PRECIOUS METAL	TFPM	89679M104	$2.8M	1.38%	90,200	SH
21	JOHNSON & JOHNSON	JNJ	478160104	$2.3M	1.16%	8,804	SH
22	ORACLE CORP	ORCL	68389X105	$2.2M	1.08%	15,900	SH
23	MICRON TECHNOLOGY INC	MU	595112103	$1.9M	0.96%	1,813	SH
24	ABBVIE INC	ABBV	00287Y109	$1.8M	0.91%	7,000	SH
25	FIRST CTZNS BANCSHARES INC D	FCNCA	31946M103	$1.8M	0.89%	868	SH
26	ELI LILLY & CO	LLY	532457108	$1.8M	0.89%	1,545	SH
27	AMERICAN INTL GROUP INC	AIG	026874784	$1.8M	0.88%	23,900	SH
28	VALARIS LTD	VAL	G9460G101	$1.6M	0.82%	21,000	SH
29	CONSTELLATION ENERGY CORP	CEG	21037T109	$1.6M	0.80%	6,350	SH
30	EXXONMOBIL HOLDINGS CORP	XOM	30233Q108	$1.6M	0.79%	9,770	SH
31	AMAZON COM INC	AMZN	023135106	$1.5M	0.76%	6,190	SH
32	INVESCO QQQ TR	QQQ	46090E103	$1.5M	0.74%	2,030	SH
33	GE AEROSPACE	GE	369604301	$1.4M	0.71%	4,615	SH
34	JPMORGAN CHASE & CO	JPM	46625H100	$1.4M	0.71%	4,327	SH
35	VITESSE ENERGY INC	VTS	92852X103	$1.4M	0.71%	85,529	SH
36	DOLLAR GEN CORP	DG	256677105	$1.4M	0.69%	11,625	SH
37	NOBLE CORP PLC	NE	G65431127	$1.3M	0.62%	30,000	SH
38	PALO ALTO NETWORKS INC	PANW	697435105	$1.2M	0.57%	2,904	SH
39	ENERGY TRANSFER L P	ET	29273V100	$1.1M	0.57%	58,000	SH
40	ELEVANCE HEALTH INC FORMERLY	ELV	036752103	$1.1M	0.57%	2,940	SH
41	GALLAGHER ARTHUR J & CO	AJG	363576109	$1.1M	0.57%	5,000	SH
42	CATERPILLAR INC	CAT	149123101	$1.1M	0.52%	1,300	SH
43	BAKER HUGHES COMPANY	BKR	05722G100	$1.0M	0.51%	18,800	SH
44	REAVES UTIL INCOME FD	UTG	756158101	$1.0M	0.51%	30,000	SH
45	COSTCO WHOLESALE CORPORATION	COST	22160K105	$1.0M	0.50%	1,100	SH
46	ISHARES TR	SOXX	464287523	$995.1K	0.49%	1,750	SH
47	BWX TECHNOLOGIES INC	BWXT	05605H100	$991.9K	0.49%	7,240	SH
48	CHEVRON CORPORATION	CVX	166764100	$986.5K	0.49%	4,831	SH
49	CHUBB LIMITED	CB	H1467J104	$904.1K	0.45%	2,771	SH
50	SPDR GOLD TR	GLD	78463V107	$895.0K	0.44%	2,350	SH

Filing History

Period	Filed	AUM	Holdings	Accession
2026-09-30	2026-10-16	$201.7M	109	0001172661-26-004564
2026-06-30	2026-07-13	$211.3M	106	0001172661-26-002595
2026-03-31	2026-04-23	$186.1M	109	0001172661-26-001525
2025-12-31	2026-02-17	$185.7M	113	0001172661-26-000889

Filer Information

Address

184 NORTH AVE. EAST
CRANFORD, NJ 07016

Phone

(908) 654-1145

Filing Manager

Merrion Investment Management Co, LLC

Cranford, NJ

Signatory

Randolph Rogers

Chief Compliance Officer