May was a strong month for fintech funding, with investors backing companies across prediction markets, payments infrastructure, AI-enabled finance workflows, digital identity, compliance operations and stablecoin rails.
The biggest deal came from Kalshi, the regulated prediction market platform, which landed $1 billion at a $22 billion valuation. Elsewhere, payments infrastructure companies Paymentology and Primer secured sizeable growth rounds, while investors also put capital behind financial data, procurement, private markets operations, embedded BNPL and cross-border payroll.
Kalshi leads May funding with $1 billion Series F
Kalshi, a regulated prediction market platform that allows users to trade event contracts, led May’s fintech funding activity with a $1 billion Series F round.
The deal valued the company at $22 billion and was led by Coatue, with participation from Sequoia Capital, Andreessen Horowitz, IVP, Paradigm, Morgan Stanley and ARK Invest.
It said institutional trading volume on its platform had climbed 800 per cent over the previous six months. Annualised trading volume also rose from $52 billion to $178 billion over the same period.
The company plans to use the capital to deepen adoption among hedge funds, asset managers, proprietary trading firms and insurance companies, while expanding products such as block trading, risk products and broker integrations.
Payments infrastructure has a busy month
Paymentology, a global issuer processor, secured $175 million in an investment co-led by Apis Partners and Aspirity Partners.
The London-headquartered company provides issuer processing infrastructure for fintechs, digital banks and retail banks, supporting clients across 68 countries. The investment will support international expansion, product development and team growth.
Paymentology said new sales rose 117 per cent year on year in FY25, while transaction volumes increased 65 per cent. The company plans to expand beyond core issuer processing into adjacent areas including credit, stablecoins, tokenisation and AI-driven services.
Payments infrastructure company Primer – founded by former Braintree and PayPal executives – also had a sizeable May, closing a $100 million Series C round.
Sofina led the round, with participation from Peak XV Partners and existing investors including Balderton, Accel, ICONIQ, Tencent and Speedinvest.
Primer provides a unified payments platform for merchants, giving finance and payments teams visibility across processors, acquirers, fraud tools and payment methods. The company will use the funding to accelerate investment in AI for payments and finance teams, including further development of its AI agent, Primer Companion.
The round will also support Primer’s US expansion. The company says the US currently accounts for around a fifth of revenue, with plans to grow that share to more than a third by 2028.
AI finance platforms attract investor backing
Daloopa, a financial data infrastructure company for AI and investment workflows, brought in $47 million in Series C funding.
The round was led by Brighton Park Capital, with participation from Squarepoint Capital, Touring Capital and Nexus Venture Partners.
Daloopa provides structured, source-linked financial data used by investment firms for earnings analysis, valuation, scenario modelling and AI-assisted research. Its platform covers more than 5,500 public companies globally and links each datapoint to the original source for auditability.
The company said the capital will support platform growth and hiring across engineering, product and go-to-market teams.
Pivot, an AI procurement platform for enterprise finance and procurement teams, closed a $40 million Series B round.
Forestay Capital and Notion Capital led the round, with participation from Greyhound, procurement industry veterans and existing investors including Hedosophia, Visionaries Club and Emblem.
Founded in 2023, Pivot provides procurement software covering sourcing, approvals, purchasing, invoicing, payments, budgets, expenses and reporting. The company operates in more than 25 countries, serves enterprise customers including DoorDash, Lemonade and Flix, and processes $3 billion in invoices annually.
The new capital will support the development of Pivot’s agentic AI capabilities, expansion into new enterprise markets and deeper integrations with ERP and financial systems.
Private markets and fund operations keep modernising
Berlin-based fund operations platform for private markets, bunch, bagged $35 million in Series B funding.
The round was led by Portage, with participation from Illuminate Financial and follow-on investment from Motive Partners, Cherry Ventures and Fintech Collective.
bunch provides private equity and venture capital fund managers with a digital operating layer across the fund lifecycle, covering investor onboarding, capital calls, fund administration, accounting and tax reporting.
It now supports more than 150 fund managers and more than 12,000 limited partners. It said annual recurring revenue grew 300 per cent in 2025, with net revenue retention reaching 156 per cent.
Funding will be used to expand commercially across Europe, deepen automation and AI workflows, and move into new geographies, asset classes and operational workflows.
Compliance, identity and BNPL platforms secure new capital
equipifi, a fintech platform that enables banks and credit unions to offer BNPL inside digital banking, secured $34 million in Series B funding.
The round was led by Left Lane Capital, with continued participation from existing investors including Curql and PHX Ventures. The deal brings equipifi’s total funding to $49 million.
The Scottsdale-based company helps financial institutions offer flexible payment options directly within their own digital banking channels. equipifi said adoption of bank-embedded flexible payment options had more than tripled over the past year.
Compliance operations infrastructure company for financial services Eisen landed $18.5 million in funding.
The total includes a $10 million Series A led by MissionOG and a previously unannounced $8.5 million seed round led by Index Ventures, with participation from Cowboy Ventures, First Round Capital, Homebrew and Restive Ventures.
Eisen provides AI-enabled infrastructure for escheatment, disbursement and tax reporting. The company monitors nearly $16 billion in balances across tens of millions of accounts at almost 50 companies, including Adyen, Binance.US, BitGo, OKX and PeoplesBank.
Didit, an identity and fraud infrastructure company, added $6 million in seed funding, taking its total seed financing to $7.5 million.
Investors include Y Combinator, Pioneer Fund, Orange Collective, Founders Future, Phosphor Capital, SaaSholic and Rebel Fund, alongside angel investors.
Founded in 2023 by Alberto and Alejandro Rosas, Didit provides programmable identity verification for people, businesses, wallets, transactions and AI-driven digital activity. The company says it now serves more than 1,500 B2B customers across fintech, crypto, marketplaces, iGaming, mobility and government.
Stablecoin and cross-border infrastructure stays active
RemotePass, a global employment, payroll and spend platform, completed a $17.4 million Series B round.
EBRD Venture Capital led the round, with participation from 500 Global and existing investors Oraseya Capital, 212 VC, Access Bridge Ventures and Khwarizmi Ventures.
RemotePass helps companies hire, pay and support workers across more than 150 countries. Its platform combines employer-of-record services, contractor management, payroll, compliance, global payments and embedded fintech.
The company has facilitated more than $800 million in cross-border payroll and now supports more than 35,000 workers. The funding will support expansion in Europe and the US, deeper compliance coverage, financial products and AI capabilities.
Checker, a digital asset and stablecoin infrastructure company for financial institutions, attracted $8 million from Galaxy Ventures, Al Mada Ventures and Framework Ventures.
The company provides a single API for institutions to access stablecoin and digital asset liquidity, cross-border payments, treasury and credit. Checker said its platform had scaled from zero to $3 billion in total processing volume over the past 12 months, with customers including Rail, Braza Bank and Belo.
The company plans to use the funding to deepen global payments coverage, develop embedded borrowing and lending capabilities, and launch AI-powered agents for treasury management, back-office operations and predictive analytics.
Sorted Wallet, a lightweight stablecoin wallet built for feature phones and low-end smartphones, picked up $4.4 million in seed funding.
The round was led by Tether and Gnosis, with participation from Movement, Angel Invest and angel investors including the founders of RWA.io.
Sorted says its wallet has been downloaded more than 500,000 times across 160 countries, including Nigeria, Kenya, Tanzania and Bangladesh. The company plans to expand across Sub-Saharan Africa and South Asia, with a focus on telco and mobile operator integrations.
