Merrion Investment Management Co, Llc
- Regulatory AUM
- $245M
- Discretionary
- $245M
- Clients
- 37
- Avg AUM / client
- $6.6M
- Accounts
- 75
- Employees
- 6
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Feb 12, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 12 | $5.2M | 2.12% |
| High net worth individuals | 20 | $142M | 58.1% |
| Charitable organizations | 3 | $96.9M | 39.6% |
| Corporations and other businesses | 2 | $464K | 0.19% |
People (5)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| David Edwin Erb | Chief Executive Officer | Nov 2005 (21y) | Less than 5% | |
| Rogers, Randolph, Christian | Chief Compliance Officer/Cfo | Nov 2005 (21y) | Less than 5% | |
| Wigton, William, Benson | Managing Member | Nov 2005 (21y) | ≈ 56.25% – 100% via Merrion Financial Group, Llc | |
| Andrew Hayes Wigton | Registered representative | Mar 2023 (3y) | ||
| John Patrick Callahan | Registered representative | CFA | Jan 2026 (1y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Merrion Financial Group, Llc | Managing Member | Nov 2005 | A | 75% or more |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Wigton, William, Benson: 75% – 100% of Merrion Financial Group, Llc × 75% – 100% direct ≈ 56.25% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 02/12/2026 | 907 KB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Charles Schwab & Co. $245M (100% of AUM) Feb 2026
- National Financial Services (Fidelity) $182M (100% of AUM) Oct 2022
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Feb 12, 2026.
View current Form ADV (SEC/IAPD) ↗