Cornerstone Professional Advisor Services provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, and selecting other managers.
Cornerstone Professional Advisor Services reports 366 clients. They include 326 individual clients, 26 high-net-worth individuals, and 14 pension and profit-sharing plans. Of its assets, 90.2% ($99.4M across 442 accounts) are managed with discretion; $10.9M across 14 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 89% | 44% |
| High-net-worth individuals | 7% | 46% |
| Pension and profit-sharing plans | 4% | 10% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 326 | $48.5M | 44.0% | $149K |
| High-net-worth individuals | 26 | $50.9M | 46.2% | $1.96M |
| Pension and profit-sharing plans | 14 | $10.9M | 9.8% | $775K |
| Total | 366 | $110M | 100% | $301K |
- Clients
- 326
- Regulatory AUM
- $48.5M
- AUM share
- 44.0%
- Avg. per client
- $149K
- Clients
- 26
- Regulatory AUM
- $50.9M
- AUM share
- 46.2%
- Avg. per client
- $1.96M
- Clients
- 14
- Regulatory AUM
- $10.9M
- AUM share
- 9.8%
- Avg. per client
- $775K
Total
- Clients
- 366
- Regulatory AUM
- $110M
- AUM share
- 100%
- Avg. per client
- $301K
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 0
Cornerstone Professional Advisor Services is paid through a percentage of assets under management and other compensation. The reviewed brochures do not disclose an asset-based fee rate. Read the SEC-filed brochure.
Steven Madonna owns 50% to 75% of Cornerstone Professional Advisor Services. It has 14 employees, 3 of them in advisory roles.
Staff
- 14 employees
- 3 in advisory functions
- 4 state-registered reps
- 1 broker-dealer rep
- 7 insurance agents
- Owns 50% to 75% of Cornerstone Professional Advisor Services, LLC
Steven Madonna
Control person · since February 2001
- Owns 50% to 75% of Cornerstone Professional Advisor Services, LLC
Alfonso Figliolia
Control person · since February 2001
Cornerstone Professional Advisor Services’ regulatory assets grew from $75.2M (March 2021) to $110M (March 2026); clients fell from 530 to 366 and employees from 19 to 14.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | StaffEmployees | Offices |
|---|---|---|---|---|
| Mar 2026March 2026 | $110M | 366 | 14 | 4 |
| Apr 2025April 2025 | $88.7M | 340 | 14 | 4 |
| Mar 2024March 2024 | $82.4M | 432 | 18 | 4 |
| Mar 2023March 2023 | $75.7M | 336 | 19 | 5 |
| Mar 2022March 2022 | $94.3M | 509 | 19 | 5 |
| Mar 2021March 2021 | $75.2M | 530 | 19 | 5 |
Besides its headquarters, Cornerstone Professional Advisor Services has 3 offices, with 4 listed addresses across 2 states.
New York · 3 listed addresses
- 9 Endo BLVD., Garden CityHQ
- 2788 Carr Court, Yorktown Heights
- 66 South Tyson Ave., Floral Park
Mississippi · 1 listed address
- 5800 Anderson Road, Edwards
Contact and registration details
- Legal name
- Cornerstone Professional Advisor Services, LLC
- Headquarters
- 9 Endo BLVD., Garden City, NY 11530
- Website
- cpasllc.com
- Phone
- 516-408-1160
- SEC file
- 801-61925
- Structure
- New York LLC
- Fiscal year end
- December
Cornerstone Professional Advisor Services’ named custodian for separately managed accounts is SEI Private Trust ($99.4M). Cornerstone Professional Advisor Services does not have custody of client assets.
- SEI Private TrustSEI Private Trust Company · Oaks, PA · $99.4M100%
At year end, Cornerstone Professional Advisor Services’ separately managed accounts were mostly in funds (70%) and cash (14%).
What the accounts hold
- Stocks11%
- Funds70%
- Bonds5%
- U.S. government and agency bonds3%
- Investment grade corporate bonds2%
- Cash14%
How many clients does Cornerstone Professional Advisor Services have?
Cornerstone Professional Advisor Services has 366 clients and manages $110 million for them, as of March 2026. They include 326 individual clients, 26 high-net-worth individuals, and 14 pension and profit-sharing plans.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 19 March 2026
What services does Cornerstone Professional Advisor Services offer?
Cornerstone Professional Advisor Services provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, and selecting other managers.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
Which custodians does Cornerstone Professional Advisor Services use?
Cornerstone Professional Advisor Services’ separately managed account assets are held at SEI Private Trust Company (Oaks, PA), with $99.4M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 19 March 2026
How many financial advisors does Cornerstone Professional Advisor Services have?
Cornerstone Professional Advisor Services has 4 investment adviser representatives registered with state securities authorities, out of 14 employees, and 3 perform investment advisory functions. 1 employee is a registered representative of a broker-dealer and 7 employees are licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Cornerstone Professional Advisor Services invest in?
At the end of its last fiscal year, Cornerstone Professional Advisor Services’ separately managed accounts held 70% registered funds (mutual funds, ETFs, BDCs), 14% cash and equivalents, 11% exchange-traded equities, 3% U.S. government and agency bonds and 2% investment grade corporate bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Cornerstone Professional Advisor Services?
Cornerstone Professional Advisor Services’ direct owners are Steven Madonna (50% to 75%) and Alfonso Figliolia (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 19 March 2026
How does Cornerstone Professional Advisor Services get paid?
Cornerstone Professional Advisor Services is paid through a percentage of assets under management and other compensation. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
How do I contact Cornerstone Professional Advisor Services?
Cornerstone Professional Advisor Services’ main office is at 9 Endo BLVD., Garden City, NY 11530. Its phone number is 516-408-1160. Its website is cpasllc.com.
