Nu's Credit Growth Masks Rising Reinvestment and Efficiency Risks

What happened

A Seeking Alpha article highlights Nu Holdings' strong credit expansion, with total credit reaching $32.7B and gross profit hitting $1.96B in Q4 2025, driven by rapid customer growth to 131M. However, the DeepValue report reveals underlying pressures, including a sharp spike in marketing spend to $94.2M in Q4 from $24.8M a year earlier, signaling intensified reinvestment. This comes amid a multi-year $4.2B investment plan for Mexico, raising questions about whether ARPAC growth—$15 per month in Q4—can offset these costs and sustain operating leverage. Credit performance shows improving NPLs, but the cost of credit rose to $4.44B in FY'25, underscoring sensitivity to underwriting as the portfolio scales. Thus, while headline metrics appear robust, efficiency concerns and funding subsidies in new markets temper the bullish narrative.

Implication

The credit expansion supports near-term revenue, but elevated marketing spend risks compressing margins if ARPAC fails to rise sufficiently, threatening the operating leverage thesis. Valuation at a forward P/E of 11.9X seems cheap versus peers, but it discounts ongoing risks like Brazil's regulatory transitions and deposit yield subsidies in Mexico and Colombia. Key near-term checkpoints include Q1-Q2 managerial P&L data to confirm if marketing remains high and credit quality holds, with any deterioration potentially triggering a thesis break. If efficiency slips or credit costs accelerate, the stock could align with the report's bear scenario, implying downside to $9.50. Therefore, maintaining a cautious stance is prudent until clearer evidence emerges that reinvestment is paying off without eroding returns.

Thesis delta

The Seeking Alpha article reinforces Nu's growth momentum but does not shift the core investment thesis from the DeepValue report, which remains a 'WAIT' rating due to unresolved reinvestment and credit risks. No material change is warranted; investors should await confirmation from upcoming quarterly results that ARPAC can offset rising costs and that credit trends remain stable. Any shift would require two consecutive quarters of improved efficiency and sustained credit performance, as outlined in the report's monitoring criteria.