I Said This Fintech Growth Stock Was Bottoming Out in June, and I Was Right

Nu Holdings (NU) opened 13% higher after posting blowout results, with Q2 revenue up 39% to $5.9B and Q2 net income up 49% (first quarter of >$1B). Metrics improved alongside margin expansion: deposits rose 18% YoY and monthly revenue per active customer increased 22% to $17.10. Despite the rally (~+40% from its June low), the stock remains slightly down for 2026, and the main overhang is rising credit risk as Nu expands its lending/loan-loss provisions.

Analysis

NU’s print is less about a one-quarter beat and more about the market re-rating a banking model that is still in its high-margin harvest phase. The key mechanism is operating leverage: once customer acquisition is largely fixed-cost, faster monetization per account can turn modest account growth into outsized earnings growth, which is why this kind of result can compress skepticism quickly but also why the stock can rerate hard on estimate revisions over the next 1-3 months.

The first-order winner is NU’s equity, but the second-order loser is the region’s incumbent-bank growth narrative: Banco do Brasil/Bradesco/Itau-style franchises face a tougher proof burden on deposit pricing and consumer credit share. MercadoLibre is the cleaner public comp to watch because both names are being evaluated as fintech-plus-credit platforms; NU’s margin expansion raises the bar for MELI’s own loan book and could force a higher risk discount on any business mix that leans into consumer credit before underwriting data is mature.

The contrarian risk is that investors are extrapolating too far from a single strong quarter and underweighting the latency in credit deterioration. The loan book can look pristine for several quarters before charge-offs and provisions normalize, so the real falsifier is not the next gap move but whether provision expense, delinquency, or deposit beta worsen into the next two earnings cycles. Over 6-18 months, the bull case survives only if Mexico scales without meaningfully higher funding costs and Brazil credit remains benign through a slower macro backdrop.

Key Decisions for Investors

• Long NU on any 1-2 week consolidation rather than chasing the opening gap; thesis is estimate revisions and multiple expansion over the next 1-3 months, with a thesis break if next-quarter provisions or delinquencies step up faster than deposits.
• Pair trade: long NU / short MELI for a 1-3 month relative-value expression. NU has clearer operating leverage and a cleaner deposit-funded lending story; cover if MELI shows accelerating credit normalization or NU’s margin expansion stalls.
• Use a call spread in NU instead of outright stock for controlled upside into the next earnings cycle; the risk/reward is best if you want exposure to analyst upgrades without full downside to a credit scare.
• Watch Brazilian consumer-credit indicators and NU provision ratios as the falsifier set; if credit costs rise before revenue growth re-accelerates, fade the rally and take profits on long exposure.