Nu Holdings Ltd. operates Nubank, the world's largest neobank by revenue and customer count, generating $11.5 billion in revenue and $1.97 billion in net income in FY2024. The company serves 114.2 million customers across Brazil, Mexico, and Colombia through a mobile-first digital platform offering credit cards, digital accounts, loans, investments, insurance, and merchant services. Founded in 2013 by David Vélez, Cristina Junqueira, and Edward Wible, Nubank IPO'd on the NYSE in December 2021 and maintains a 28% return on equity with a 29.9% efficiency ratio.
Nubank: Key Facts
- Founded: 2013 in São Paulo, Brazil
- Headquarters: São Paulo, Brazil
- CEO: David Vélez Osorno (founder, since 2013)
- Revenue (FY2024): $11.5 billion
- Net Income (FY2024): $1.97 billion
- Customers: 114.2 million (FY2024), 122.7 million (Q2 2025)
- Employees: Approximately 10,027
- Market Cap: Approximately $42.5 billion (June 2025)
- Primary Business: Digital banking, credit cards, consumer lending, investments
- Efficiency Ratio: 29.9% (Q4 2024), 24.7% (Q2 2025)
How Does Nubank Make Money?
Nubank generates 84% of revenue from interest income — charged on revolving credit card balances, personal loans, Pix financing, and secured lending — and 16% from fees, primarily merchant interchange fees on credit card transactions. Total revenue was $11.5 billion in FY2024, up 43.7% YoY.
The company's net interest margin was 17.7% in Q2 2025, with risk-adjusted NIM of 9.2%. Monthly ARPAC reached $10.7 in Q4 2024, with mature cohorts generating $27.3. The average customer uses 4.1 products. Purchase volume on Nubank cards reached $125 billion in 2024. The lending portfolio totaled $27.3 billion by Q2 2025, with deposits of $36.6 billion and a loan-to-deposit ratio of 40%.
The company's cost structure is structurally superior to traditional banks: monthly cost to serve is $0.80 per active customer, compared to $5-15 for incumbents. The efficiency ratio of 29.9% is approximately 10-15 percentage points better than traditional banks globally.
Who Founded Nubank and When?
Nubank was founded in 2013 by David Vélez (a Colombian-born former Sequoia Capital partner), Cristina Junqueira (a former Itaú Unibanco credit card executive), and Edward Wible (an American software engineer). The company started in a suburban house in São Paulo after Vélez was told Sequoia was abandoning its Brazil expansion plans.
The first product — a no-annual-fee purple credit card managed entirely through a smartphone app — launched on April 1, 2014. The company reached 48 million customers by its December 2021 IPO on the NYSE, which raised $2.6 billion at a $41-45 billion valuation.
What Is Nubank's Competitive Advantage?
Nubank's single unreplicable moat is the combination of its proprietary NuX Credit Engine, extreme cost efficiency, and fanatical customer loyalty. The NuX engine collects 30,000+ data points per customer and optimizes for long-term NPV rather than short-term NPLs, enabling profitable underwriting of customers that traditional banks reject.
The $0.80 monthly cost to serve and 29.9% efficiency ratio are structurally superior to incumbent banks. Customer acquisition costs of approximately $5 — with 70% organic growth through word-of-mouth — compare to $50-200 for competitors. The NPS of 84 for premium customers and 83.1% monthly activity rate create engagement and data richness that improve over time.
How Has Nubank's Revenue Grown Over Time?
Nubank's revenue grew from $45 million in 2016 to $11.5 billion in 2024 — a 255x increase in eight years. Revenue was $963 million in 2020, $1.7 billion in 2021, $4.8 billion in 2022, $8.0 billion in 2023, and $11.5 billion in 2024. Net income flipped from losses in 2013-2022 to $1.03 billion in 2023 and $1.97 billion in 2024.
The growth trajectory reflects customer expansion (from 1.3 million in 2016 to 114.2 million in 2024) and ARPAC improvement (from under $5 to $10.7). Q2 2025 revenue of $3.7 billion suggests annualized revenue approaching $15 billion.
Nubank Business Model Explained
Nubank operates a digital-only banking model with zero physical branches, cloud-native infrastructure on AWS, and AI-driven customer service. The company acquires customers at low cost through word-of-mouth, engages them with a no-fee digital account, and monetizes through credit products, interchange fees, and cross-sold services.
The NuX Credit Engine uses 30,000+ data points per customer to underwrite risk and optimize pricing. The platform's microservices architecture enables rapid product launches — new features deploy in weeks rather than months. The company's $36.6 billion in deposits fund $27.3 billion in loans, with a 40% loan-to-deposit ratio providing significant growth capacity.
Nubank Key Acquisitions
Nubank acquired Easynvest (2020) to create NuInvest brokerage, Spin Pay (2021) to accelerate Pix payment integration, Olivia AI (2022) to strengthen AI and personalization capabilities, and Hyperplane (2024) to accelerate AI-driven banking infrastructure. The company also led a $250 million Series D in Tyme Group (2025) for global expansion into Africa and Southeast Asia.
What Are the Biggest Risks Facing Nubank?
The most immediate risk is Brazil's macroeconomic deterioration combined with credit quality concerns. The 90+ NPL ratio of 7.0% in Q4 2024 reflects expansion down the credit spectrum. A recession could increase defaults, reduce data quality for the NuX engine, and compress credit demand simultaneously.
Geographic concentration is extreme: 73% of revenue from Brazil, where 60% of adults are already customers. Incumbent digital banks (Iti, Next) and integrated fintechs (Mercado Pago, PicPay) are intensifying competition. Regulatory changes to interchange fees or Pix rules could directly impact the 16% of revenue from fees.
Bottom Line
Nubank is growing rapidly, with revenue up 43.7% to $11.5 billion in FY2024 and net income nearly doubling to $1.97 billion. The company's 28% ROE and 29.9% efficiency ratio demonstrate that a digital-only model can generate superior returns. However, the long-term test is whether Nubank can sustain growth as Brazilian market saturation approaches, manage credit quality in a deteriorating macro environment, and replicate its Brazil success in Mexico and Colombia while fending off incumbent and fintech competition.
