Top 10 US FinTech M&A Deals Reshaping Finance

S&P Global's $44 billion merger with IHS Markit in February 2022 created a financial data giant with over $12 billion in combined annual revenue, outperforming #5 Moody's by 40% in market reach. The deal unified S&P's credit ratings with IHS Markit's commodities data and fixed-income analytics, and by 2026, AI-enhanced data products serve over 90% of Fortune 500 financial decision-makers.

S&P Global Merges IHS Markit ($44B)

Intuit's $7.1 billion acquisition of Credit Karma in December 2020 brought 110 million members and a personal finance marketplace into TurboTax's orbit, creating a cradle-to-grave financial guidance platform. After DOJ scrutiny forced the sale of Credit Karma's tax filing business to Square, Intuit still serves 100 million+ consumers annually and generates over $2 billion in referral revenue — 60% faster growth than the average FinTech referral broker.

Intuit Acquires Credit Karma ($7.1B)

FIS acquired Worldpay for $43 billion in 2019, the largest FinTech deal at that time, to create a payments-to-banking technology behemoth. However, by 2023 the merger collapsed — FIS sold a 55% stake in Worldpay to GTCR at a valuation of just $18.5 billion, erasing over $24 billion in value. This misstep cost FIS 50% more than Block's entire Afterpay deal, becoming a cautionary case study in integration risk between high-growth payments and legacy banking software.

FIS Acquires Worldpay ($43B) — Then Reverses

Visa’s $5.3 billion acquisition of Featurespace in 2024 vaults it to the forefront of AI-powered fraud detection, with the ARIC Risk Hub processing over 13,000 fraud-detection decisions per millisecond by 2025. This adaptive behavioral analytics platform, already deployed by 70+ financial institutions including HSBC and Worldpay, catches real-time fraud across card networks. The deal cements Visa’s strategic pivot toward AI security, outperforming #6 Morgan Stanley’s Eaton Vance acquisition in technological integration by focusing on actionable intelligence rather than asset aggregation.

Visa Acquires Featurespace ($5.3B)

Morgan Stanley’s $7 billion acquisition of Eaton Vance in March 2021 created a $1.4 trillion+ AUM powerhouse, adding $500 billion in assets and the Calvert Research & Management ESG franchise. This transformed its investment management division into a market leader, with the parametric tax-managed SMA business now serving over 350,000 individual investors. The deal is faster than the average M&A integration in wealth management, delivering personalized index investing at scale, while rivaling #7 PayPal-Honey’s consumer focus with institutional-grade efficiency.

Morgan Stanley Acquires Eaton Vance ($7B)

PayPal’s $4 billion acquisition of Honey in 2020, its largest ever, added a browser extension used by 17 million active shoppers that automatically finds coupons and tracks price drops. The deal deepened PayPal’s shopping data flywheel, integrating Honey across Venmo and Braintree to drive incremental GMV of $30B+ annually by 2025. It outperforms #8 Goldman Sachs-GreenSky’s consumer play by achieving seamless merchant-funded offers across 435 million users, though it trails #5 Visa-Featurespace in AI complexity.

PayPal Acquires Honey ($4B)

Goldman Sachs acquired GreenSky for $2.24 billion in 2022 to expand its Marcus digital banking platform, targeting home improvement BNPL for 4 million+ customers. However, the deal soured with a $1.5 billion write-down in 2023 as Goldman retreated from consumer banking, marking a painful end to its Main Street ambitions. This is cheaper than the typical rival BNPL acquisition, but it underperforms #7 PayPal-Honey’s $30B+ GMV boost, demonstrating the higher risk of point-of-sale lending without merchant integration.

Goldman Sachs Acquires GreenSky ($2.24B)

Stripe, the payments infrastructure giant co-founded by Patrick and John Collison, commands a $65 billion+ valuation from secondary market transactions as of 2024, making it the most valuable private FinTech company globally without an acquisition or IPO. It processes over $1 trillion in annualized payment volume for more than 1 million businesses. In 2025, Stripe entered stablecoin payments and AI-driven fraud detection, while its confidential IPO preparations target a valuation exceeding $100 billion. This organic growth strategy outperforms #9, which relies on M&A for expansion, by maintaining full control over its road map and avoiding integration risks.

Stripe ($65B+ Valuation — No Acquisition Needed)

Visa's $5.3 billion acquisition of open banking pioneer Plaid was blocked by the DOJ in January 2021 on antitrust grounds, preserving Plaid as an independent force. Plaid now connects 8,000+ apps to 12,000+ banks via its API, processing over 20 million bank connections monthly, and raised $425 million at a $13.4 billion valuation in 2021. By 2025, Plaid dominates the US open banking infrastructure layer, processing 90% of all consumer-permitted data sharing requests. This outcome is slower than the average M&A velocity on this list but ensures Plaid remains a competitive throttle on Visa's debit network dominance.

Visa Blocked From Acquiring Plaid ($5.3B)