About PKF O'Connor Davies, LLP
<p>Founded in 1891, PKF O’Connor Davies, LLP is a licensed CPA firm headquartered in Harrison, New York, in Westchester County near New York City. With about 1,000 employees, the firm supports organizations across the New York metro area and beyond.</p> <p>PKF O’Connor Davies is listed in the top 25 on Accounting Today’s Top 100 Firms. The firm provides Accounting & Assurance work and also runs practices in Tax, Advisory, Technology & Cybersecurity, and Private Client Services.</p> <p>For plan sponsors looking for <a href="/auditors/401k">401(k) auditors</a> and other <a href="/retirement-plans">retirement plan providers</a>, the firm brings a large-firm bench along with partner-level attention and established processes built over decades.</p> <p>Team members participate in professional organizations including the American Institute of Certified Public Accountants (AICPA). More information is available at <a href="https://www.pkfod.com">www.pkfod.com</a>.</p> <ul> <li>Licensed CPA firm providing Accounting & Assurance services</li> <li>Additional services: Tax, Advisory, Technology & Cybersecurity, Private Client Services</li> <li>Founded: 1891</li> <li>Employees: 1,000</li> <li>Headquarters: Harrison, NY (New York City metro area)</li> </ul>
Website: https://www.www.pkfod.com
Founded: 1891
Employees: 1000
Office Locations
- Harrison, NY (Headquarters)
Accreditations & Certifications
- AICPA EBPAQC
- AICPA Member
Audit Statistics (2024)
- Total Plans Audited: 554
- Total AUM Audited: $53.0B
- 401(k): 554 plans, $53.0B AUM
Plans Serviced (2025)
Largest plans where this firm is listed as a service provider (Schedule C) or IQPA (Schedule H) on the most recent filings (From Form 5500).
| Plan | Sponsor | Assets | Participants |
|---|---|---|---|
| NORTHROP GRUMMAN SAVINGS PLAN | NORTHROP GRUMMAN CORPORATION, VA | $39.5B | 99,799 |
| NORTHROP GRUMMAN PENSION PLAN | NORTHROP GRUMMAN CORPORATION, VA | $18.8B | 11,507 |
| NG SPACE&MISSION SYSTEMS CORP SALARIED PENSION PLA | NORTHROP GRUMMAN CORPORATION, VA | $8.4B | 6,030 |
| THE SAVINGS AND INVESTMENT PLAN | WPP GROUP USA, INC., NY | $4.7B | 19,575 |
| OMNICOM GROUP RETIREMENT SAVINGS PLAN | OMNICOM GROUP INC., NY | $4.5B | 24,911 |
| 403(b) Retirement Plan | Healthcare Sponsor, NY | $4.3B | 16,359 |
| 401(k) Retirement Plan | Manufacturing Sponsor, VA | $2.1B | 1,451 |
| 401(k) Retirement Plan | Professional Services Sponsor, CT | $1.6B | 10,687 |
| 401(k) Retirement Plan | Technology Sponsor, NY | $1.5B | 6,961 |
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