South Korea’s Next Securities is making its first major move into the U.S. financial market, striking a strategic partnership with Siebert Financial, a New York–based full-service brokerage listed on Nasdaq. The collaboration, announced on October 2, aims to bring AI-powered investment solutions to American investors by pairing Next Securities’ technology expertise with Siebert’s decades of market experience.
The deal represents a significant step in Next Securities’ overseas expansion and could reshape how retail investors access financial services. For Siebert, which was founded in 1967 and operates six subsidiaries offering brokerage, advisory, and employee stock plan management, the partnership provides a chance to enhance its platform with cutting-edge AI tools. Notably, South Korean fintech giant KakaoPay is already a major shareholder in Siebert, underscoring growing links between Korean finance and Wall Street.
John Gebbia, CEO of Siebert, called the partnership “an important milestone in Siebert’s evolution,” adding that the future of finance depends on effectively delivering technology and information to investors. “By teaming up with Next Securities, we’re positioning ourselves to expand growth opportunities through AI innovation,” he said.
Next Securities CEO Kim Seung-yeon said the tie-up marks “a critical step in our U.S. market entry,” stressing that the company intends to “redefine the investment experience by combining AI-driven technology with Siebert’s financial infrastructure.”
To solidify its U.S. presence, Next Securities will establish a Delaware-based subsidiary, NextMarket, with an initial investment of $1 million. Kim will serve as the unit’s first CEO. The entity will provide technology consulting and may roll out the firm’s AI-powered mobile trading system (MTS) for U.S. clients, setting the stage for a full retail launch in the American market by late 2026.
For U.S. investors, the move signals another example of Korean financial firms seeking to carve out a role in the global investment landscape. With AI continuing to disrupt the industry, the Next–Siebert partnership could bring a new wave of innovation to U.S. brokerage services.
