Oscar Gruss and Son Incorporated
Financial ServicesUnited States11-50 Employees
Oscar Gruss & Son Incorporated is a United States–based financial services firm with roots dating back to 1918, when Oscar Gruss opened an office in Lviv to trade foreign currency. Its early ethos emphasized integrity, hard work, and the pursuit of opportunity, and the business quickly expanded to operate in Lviv and Warsaw. Today, Oscar Gruss is a wholly owned subsidiary of Makor Group. Within Makor Group, an international agency brokerage that trades cash equities, fixed income, FX and derivatives, Oscar Gruss sits within a broad multi-asset trading ecosystem. The firm is described as relatively small within the financial services landscape. In 2026, Makor Group announced the appointment of a global multi-asset sales trader based in Dubai, signaling ongoing expansion of its global platform.