Obrien Greene & Co Inc
- Regulatory AUM
- $464M
- Discretionary
- $421M
- Clients
- 148
- Avg AUM / client
- $3.1M
- Accounts
- 355
- Employees
- 7
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Jun 17, 2026
Investments (13F portfolio — 133 positions, $353,315,326)
13F period Mar 31, 2026| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Sprott Physical Gold Trust | COM | $20,605,383 | 581,416 | 5.83% | 4.44% |
| 2 | Interactive Brokers Group Inc | COM | $16,951,324 | 252,741 | 4.8% | 3.65% |
| 3 | Franklin Ftse Brazil Etf | COM | $14,556,664 | 609,320 | 4.12% | 3.13% |
| 4 | Apple Computer Inc Com | COM | $14,033,358 | 55,295 | 3.97% | 3.02% |
| 5 | Berkshire Hathaway Inc Cl B | COM | $13,338,216 | 27,834 | 3.78% | 2.87% |
| 6 | Wal Mart Stores | COM | $12,703,034 | 102,213 | 3.6% | 2.74% |
| 7 | Valero Energy Corp New Com | COM | $12,498,724 | 50,586 | 3.54% | 2.69% |
| 8 | Eog Res Inc Com | COM | $12,057,668 | 83,404 | 3.41% | 2.6% |
| 9 | Franco Nevada Corp | COM | $12,005,083 | 48,594 | 3.4% | 2.59% |
| 10 | Williams Cos | COM | $11,293,076 | 155,167 | 3.2% | 2.43% |
| 11 | Cboe Global Markets Inc | COM | $10,645,421 | 37,875 | 3.01% | 2.29% |
| 12 | Amgen Inc | COM | $10,426,933 | 29,635 | 2.95% | 2.25% |
| 13 | Cisco Sys Inc Com | COM | $10,124,434 | 130,486 | 2.87% | 2.18% |
| 14 | Nutrien Ltd | COM | $9,927,144 | 131,555 | 2.81% | 2.14% |
| 15 | Union Pacific Corp | COM | $9,897,103 | 40,793 | 2.8% | 2.13% |
| 16 | Curtiss Wright Corp | COM | $8,814,499 | 12,941 | 2.49% | 1.9% |
| 17 | Nextera Energy Inc | COM | $8,607,196 | 92,670 | 2.44% | 1.85% |
| 18 | Microsoft Corp | COM | $8,145,338 | 22,004 | 2.31% | 1.75% |
| 19 | Danaher Corp Del Com | COM | $7,638,024 | 40,285 | 2.16% | 1.64% |
| 20 | S&P Global Inc Com | COM | $7,269,275 | 17,091 | 2.06% | 1.57% |
| 21 | Lyondellbasell Industries Ord | COM | $6,817,068 | 84,621 | 1.93% | 1.47% |
| 22 | Abb Ltd Sponsored Adr | COM | $6,715,412 | 83,442 | 1.9% | 1.45% |
| 23 | Veralto Ord Shs | COM | $6,089,039 | 68,865 | 1.72% | 1.31% |
| 24 | Boston Scientific | COM | $5,233,726 | 83,406 | 1.48% | 1.13% |
| 25 | Sony Group Corporation Sponsor | COM | $4,867,854 | 235,162 | 1.38% | 1.05% |
Top 25 of 133 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 47 | $19.7M | 4.24% |
| High net worth individuals | 89 | $308M | 66.3% |
| Pooled investment vehicles (non-investment companies) | 1 | $19.8M | 4.27% |
| Pension and profit sharing plans | Fewer than 5 clients | $68.4M | 14.7% |
| Charitable organizations | 11 | $36.1M | 7.78% |
| Other | Fewer than 5 clients | $12.7M | 2.73% |
Private funds (1)
Reported in Form ADV Section 7.B.(1), filing of Feb 2024 · $14.6M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| O'brien Greene Small Capitalization Stock Fund L.P. | Hedge Fund | Pennsylvania | $14.6M | 44 |
People (5)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| O'brien, Elizabeth, Burns | Corporate Secretary | Feb 1987 (40y) | Less than 5% | |
| Mark Bennett Obrien | Chairman | May 1991 (35y) | Less than 5% | |
| Matthew Bennett Obrien | President | Sep 2015 (11y) | 75% or more | |
| Foggo, James, Robert | Chief Compliance Officer | Oct 2021 (5y) | Less than 5% | |
| Sally Hart Sulcove | Registered representative | CFP CFA | Feb 2004 (23y) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
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.
Private funds (1, $14.6M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| O'brien Greene Small Capitalization Stock Fund L.P. | Hedge Fund | $14.6M | $92.0K | 44 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 06/17/2026 | 1.23 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: FAILED TO TIMELY FILE AND DELIVER THE NEWLY MANDATED FORM CRS TO RETAIL INVESTORS Status: Final Sanction Detail: CIVIL PENALTY ESCROWED AWAITING REMITTANCE TO SEC Summary: ADVISER REMEDIED FAILURE TO FILE AND DELIVER FORM CRS
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
- • Hourly charges
- • Fixed fees
- • Performance-based fees
Services
- • Financial planning services
- • Portfolio management for individuals/small businesses
- • Portfolio management for pooled investment vehicles
Custody
Reported custodians
- National Financial Services (Fidelity) $300M (65% of AUM) Jun 2026
- Charles Schwab & Co. $124M (27% of AUM) Jun 2026
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: Jun 17, 2026.
View current Form ADV (SEC/IAPD) ↗