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Clients PKF O’Connor Davies and Rainer & Company Announce Merger

  • Jun 2, 2025
  • 1 min read

PKF O’Connor Davies, one of the nation’s largest accounting, tax and advisory practices, announced the addition of Philadelphia-area firm, Rainer & Company.


Ira Rosenbloom of Optimum Strategies served as strategic partner to both parties in this transaction.


The transaction was covered in Accounting Today and CPA Practice Advisor (login may be required).


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Optimum Strategies helps Mid-Atlantic CPA firms in Philadelphia, Cherry Hill, Baltimore, Bethesda, Arlington, Reston, Richmond, and Washington, DC — as well as surrounding regions — plan internal succession, improve performance, and navigate mergers and acquisitions. Led by Ira Rosenbloom, we provide strategic support for every stage of firm growth and transition.

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