On September 29, 2025, Fiserv, Inc. (NYSE: FI), a premier provider of payments and financial services technology, announced a significant step in its growth strategy by signing a definitive agreement to acquire StoneCastle Cash Management. This acquisition is poised to enhance Fiserv's capabilities in delivering financial solutions to community banks and credit unions across the United States.

1. Expanding Institutional Deposit Access

The acquisition of StoneCastle Cash Management is a strategic move that positions Fiserv as a technology-enabled source of billions in institutional deposits. By integrating StoneCastle’s offerings, Fiserv aims to strengthen the balance sheets of financial institutions, providing them with cost-efficient deposit funding solutions that cater to a diverse range of businesses and enterprise customers holding substantial cash balances.

Andrew Gelb, Head of Financial Solutions at Fiserv, emphasized the importance of this acquisition, stating, “Acquiring StoneCastle is an important step forward in our strategy to help financial institutions optimize their balance sheets, which will enable them to do more in the communities they serve.”

2. Enhancing Core Banking Solutions

StoneCastle is renowned for its insured deposit platform, which facilitates stable funding for over 1,000 FDIC-insured depository institutions. The firm has established a robust network that connects institutional cash with community and regional banks, promoting safety, liquidity, and broader access to funding. With an existing relationship with more than 300 of Fiserv's core banks, the integration of StoneCastle’s capabilities is expected to unlock new value and accelerate innovation within the financial ecosystem.

Takis Georgakopoulos, COO at Fiserv, highlighted the unique advantages this acquisition brings: “We believe this further sets Fiserv apart in core banking by enabling institutions to custody cash supporting FIUSD stablecoins while unlocking new value and accelerating innovation across the financial ecosystem.”

3. StoneCastle's Legacy and Vision

Founded in 2009, StoneCastle Cash Management has built a reputation for optimizing depositors’ needs—ranging from individuals to governmental entities—while providing stable funding to financial institutions. The company utilizes an institutional-grade distribution platform to direct cash balances into insured depository institutions, making it a critical player in the U.S. deposit network.

Joshua Siegel, Founder & CEO of StoneCastle Partners, expressed enthusiasm about joining forces with Fiserv, stating, “Joining Fiserv will accelerate our ability to innovate, expand our reach to financial institutions and depositors, and deliver even greater value through a unified, modern platform.”

4. Transaction Details and Outlook

The transaction is anticipated to close in the first quarter of 2026, pending regulatory approvals and customary closing conditions. While the financial terms of the deal have not been disclosed, Keefe, Bruyette & Woods, a Stifel Company, acted as the exclusive financial advisor to StoneCastle Partners in connection with the transaction.

This acquisition marks a pivotal moment for Fiserv as it continues to expand its footprint in the financial technology landscape, reinforcing its commitment to innovation and excellence in serving clients across the financial services sector.

As Fiserv integrates StoneCastle’s platform, the industry will be watching closely to see how this strategic move shapes the future of financial services, particularly in enhancing the capabilities of community banks and credit unions to serve their local markets effectively.

Original press release