Fiserv and Flagstar Bank Announce Strategic Core Banking Relationship

Rhea-AI Summary

Fiserv (NASDAQ:FISV) and Flagstar Bank (NYSE:FLG) announced that Flagstar has selected Finxact, the cloud-native core banking platform from Fiserv, as the cornerstone of its core modernization strategy and a key pillar of the Flagstar S2 Platform technology initiative.

Finxact will become Flagstar’s next-generation system of record and transaction engine, replacing legacy cores and enabling a single, consolidated platform via phased conversions. According to Flagstar, the bank aims to support real-time, digital-first customer experiences. Fiserv highlights Finxact’s open, API-first, cloud-native design, real-time data access, and temporal transaction processing that removes end-of-day batch reconciliation.

Flagstar reports $87.7 billion in assets, $61.2 billion in loans, $67.5 billion in deposits, and $8.1 billion in equity as of June 30, 2026.

Positive

• Flagstar selects Finxact as next-generation core banking platform from Fiserv
• Flagstar plans a single, consolidated core with phased conversions using Finxact
• Finxact offers real-time, temporal transaction processing eliminating end-of-day batch reconciliation
• Flagstar reports $87.7 billion in assets and $67.5 billion in deposits as of June 30, 2026

Negative

• None.

Market Context

Recent insider activity recorded Net Buying, including director Lance M. Fritz's purchase of 10,000 ...

Analysis

Recent insider activity recorded Net Buying, including director Lance M. Fritz's purchase of 10,000 shares. That supports monitoring ownership activity alongside the Finxact selection, while recent earnings declines remain a risk factor.

Key Figures

Assets: $87.7 billion Loans: $61.2 billion Deposits: $67.5 billion +3 more

6 metrics

Assets $87.7 billion Flagstar at June 30, 2026

Loans $61.2 billion Flagstar at June 30, 2026

Deposits $67.5 billion Flagstar at June 30, 2026

Stockholders' equity $8.1 billion Flagstar at June 30, 2026

Operating locations 340 locations Flagstar operations

Operating states 9 states Flagstar operations

Historical Context

5 past events · Latest: Aug 06 (Negative)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Aug 06	Second-quarter earnings	Negative	+0.0%	Revenue and adjusted EPS declined while full-year organic outlook narrowed.
Aug 05	AI partnership	Positive	-3.0%	Fiserv partnered with Stuut to modernize enterprise receivables using AI automation.
Aug 05	Core platform selection	Positive	-3.0%	UW Credit Union selected DNA alongside a multi-year renewal of related services.
Aug 04	Global partnership	Positive	+2.6%	Mastercard Merchant Cloud was integrated into Fiserv Commerce Hub for enterprise merchants.
Aug 03	Small business index	Positive	+0.8%	July small-business sales increased year over year, led by higher average ticket size.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent positive partnership and operating-news announcements produced mixed reactions, including two declines and one gain, while the latest earnings report had no recorded move.

Key Terms

system of record, api-first, temporal transaction processing, end-of-day batch reconciliation, +1 more

5 terms

system of record technical

"Finxact will serve as the next-generation system of record and transaction processing engine"

A system of record is the official place where an organization keeps the authoritative copy of its critical information—like ownership, transactions, patient files, or compliance records—used for reporting and legal purposes. Investors care because this single trusted source feeds financial statements and regulatory filings; if it’s inaccurate or missing, the company can face reporting errors, fines, operational disruption, and damage to credibility—much like a business keeping a single master ledger.

api-first technical

"Finxact is an open, cloud-native, API-first platform designed to help financial institutions"

Designing a product or service so its programmable connection points (APIs) are created and prioritized before any user-facing features, like planning plumbing and wiring before decorating rooms. For investors, an API-first approach signals easier integration with partners and customers, faster rollout of new features, and more scalable, reusable technology that can lower development costs and open additional revenue or partnership channels.

temporal transaction processing technical

"Its real-time, temporal transaction processing eliminates end-of-day batch reconciliation"

Temporal transaction processing is the handling and recording of financial transactions with explicit attention to their timing — when a transaction occurred, when it takes effect, and how its historical state changes over time. It matters to investors because accurate, time-stamped records let traders, auditors and regulators reconstruct and verify the sequence and validity of trades or payments; think of it like a video recording of every step in a money transfer so you can rewind, compare versions, and prove what happened when.

end-of-day batch reconciliation technical

"eliminates end-of-day batch reconciliation, delivering a single, authoritative version"

A routine back-office process that runs after the market closes to compare and balance groups of transactions, account balances, trade confirmations, cash movements and position records across different systems. Think of it like a nightly inventory count where batches of records are checked for mismatches, so early errors, missing settlements or reporting issues are spotted and corrected. For investors, this process helps ensure reported holdings, cash availability and settlement status are accurate and that operational mistakes or reconciliation breaks are identified promptly.

embedded finance financial

"rapidly deliver new products and services, support embedded finance, and future-proof"

Embedded finance integrates financial services directly into the products or platforms people use daily, such as online shopping or business software. It allows users to access services like payments, loans, or insurance seamlessly within those platforms, making transactions faster and more convenient. For investors, it represents a way for companies to generate new revenue streams and deepen customer relationships through integrated financial offerings.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Flagstar selects Finxact, next-generation core banking platform, as a foundation for modernization strategy and key pillar of the Flagstar S2 Platform

NEW YORK, Aug. 17, 2026 (GLOBE NEWSWIRE) -- Fiserv, Inc. (NASDAQ: FISV), a global leader in payments and financial technology, and Flagstar Bank, N.A. (NYSE:FLG), one of the nation’s largest regional banks, today announced that Flagstar has selected Finxact from Fiserv, a modern, cloud-native core banking platform, as the cornerstone of the bank’s core modernization strategy.

Flagstar’s selection of Finxact is a natural extension of its commitment to building a modern technology foundation and a key component of the Flagstar S2 Platform™ — Simple and Sophisticated — the bank's unified technology transformation initiative. Finxact will serve as the next-generation system of record and transaction processing engine underpinning Flagstar's modernization strategy, replacing legacy technology and positioning the bank to deliver the real-time, digital-first banking experiences today's customers demand. As the bank moves to a single, consolidated core with Finxact, it will implement planned conversions in a phased approach to support a seamless transition.

“At the heart of everything we do is a genuine commitment to making banking better for our customers starting with how we build and evolve our technology,” said Christopher Higgins, Chief Information & Operations Officer at Flagstar Bank. “Choosing Finxact wasn't just a technical decision, it was a pivotal moment for us. A significant enabler of everything the Flagstar S2 Platform is becoming, Finxact will give us the freedom to move faster, grow smarter, and deliver the kind of real-time, seamless experiences that today's customers expect. We're not just keeping up with the future of financial services — we're building it.”

“Financial institutions are increasingly rethinking their technology foundations to improve agility, deliver differentiated experiences and respond more quickly to evolving customer expectations,” said Srini Krish, Co-Head, Financial Solutions, Fiserv. “Flagstar's vision for technology is exactly the kind of bold, forward-thinking transformation that Finxact was built to enable. This partnership is a powerful demonstration of what a next-generation core platform can enable for a large financial institution and will serve as a compelling model for institutions across the industry."

Finxact is an open, cloud-native, API-first platform designed to help financial institutions modernize incrementally while gaining real-time access to data, greater operational flexibility and faster product development capabilities. Its real-time, temporal transaction processing eliminates end-of-day batch reconciliation, delivering a single, authoritative version of the truth across the enterprise. Finxact's open, extensible architecture and API-first design are purpose-built to integrate seamlessly within this framework, enabling banks to rapidly deliver new products and services, support embedded finance, and future-proof their technology investments.

About Flagstar Bank, N.A.
Flagstar Bank, N.A. is one of the largest regional banks in the country. At June 30, 2026, the Bank had $87.7 billion of assets, $61.2 billion of loans, deposits of $67.5 billion, and total stockholders' equity of $8.1 billion. Flagstar Bank, N.A. operates approximately 340 locations across nine states, with strong footholds in the greater New York/New Jersey metropolitan region and in the upper Midwest, along with a significant presence in fast-growing markets in Florida and the West Coast.

About Fiserv
Fiserv, Inc. (NASDAQ: FISV), a Fortune 500 company, is a global leader uniting commerce and finance. The company powers sustained growth and innovation at scale for financial institutions and businesses worldwide across payments, account processing, digital banking, merchant acquiring, network services, e-commerce, and Clover®, the all-in-one business management platform. Fiserv is a member of the S&P 500® Index and one of FORTUNE® America’s Most Innovative Companies. Visit fiserv.com and follow on social media for more information and the latest company news. 

For more information contact:	Additional contact:
Media Relations:
Mark Jelfs	Jessica Torchia
Senior Manager, Communications	Vice President, External Communications
Fiserv, Inc.	Flagstar Bank, N.A.
mark.jelfs@fiserv.com	jessica.torchia@flagstar.com

FAQ

What did Flagstar Bank (NYSE:FLG) announce about its core banking platform on August 17, 2026?

Flagstar Bank announced it selected Finxact from Fiserv as the foundation of its core modernization strategy. According to Flagstar, Finxact will serve as its next-generation system of record and transaction engine and a key pillar of the unified Flagstar S2 Platform initiative.

How will Finxact from Fiserv (NASDAQ:FISV) be used in Flagstar Bank’s S2 Platform?

Finxact will act as a core component of the Flagstar S2 Platform, the bank’s unified technology transformation initiative. According to Flagstar, it will underpin a single, consolidated core, supporting phased conversions and enabling real-time, digital-first customer banking experiences across the enterprise.

What are the key technical features of Finxact highlighted by Fiserv (FISV)?

Finxact is described as an open, cloud-native, API-first core banking platform. According to Fiserv, it provides real-time data access, temporal transaction processing that removes end-of-day batch reconciliation, and an extensible architecture enabling rapid product development and integration within banks’ broader technology frameworks.

Why did Flagstar Bank choose Finxact as its next-generation core banking solution?

Flagstar cited Finxact as a significant enabler of what the Flagstar S2 Platform is becoming. According to Flagstar, the platform should allow the bank to move faster, grow smarter, and deliver real-time, seamless, digital-first experiences aligned with evolving customer expectations in financial services.

What is the planned migration approach as Flagstar Bank adopts Finxact from Fiserv?

Flagstar plans a phased conversion to Finxact while moving to a single, consolidated core. According to Flagstar, this approach is intended to support a seamless transition from legacy systems, minimizing disruption while modernizing its core banking capabilities and transaction processing infrastructure.

How large is Flagstar Bank in terms of assets, loans, and deposits in 2026?

Flagstar Bank reported $87.7 billion in assets, $61.2 billion in loans, and $67.5 billion in deposits as of June 30, 2026. According to Flagstar, total stockholders’ equity stood at $8.1 billion, with approximately 340 locations across nine U.S. states.

What role does Fiserv play in Flagstar Bank’s technology modernization?

Fiserv provides the Finxact core banking platform that underpins Flagstar’s modernization plans. According to Fiserv, Finxact’s open, API-first, cloud-native design and real-time processing capabilities are intended to help large financial institutions, including Flagstar, modernize incrementally while enhancing agility and product development speed.