The P/B of 1.75 is well above the European average, reflecting expectations of superior returns and capital generation. However, with ROE at 12.4% (trailing) and a tangible book value per share of $17.18, the market is pricing in sustained profitability. If NIM compression persists, the premium could contract, as seen in the recent P/B decline from 18.01 in 2026Q1 to 17.78 in 2026Q2.

The DuPont decomposition shows that ROE is driven by modest asset utilization (NIM of 1.8%) and high leverage (equity/assets of 4-5%). The increase in fee income suggests a strategic pivot toward less rate-sensitive revenue, which could improve earnings quality. However, the efficiency ratio spiked to 86.1% in 2026Q2, indicating that cost control is becoming more challenging as revenue growth slows.

The NIM decline reflects rising deposit betas and peaking ECB rates, which are squeezing the spread between asset yields and funding costs. The efficiency ratio spike is partly due to a sharp drop in total revenue, which may be a data anomaly given the record income reported for 2025. Investors should monitor whether cost-cutting initiatives can offset margin pressure, as the bank's digital advantage may be eroding.

ING's capital ratios appear adequate but not fortress-like, especially when compared to peers with higher equity buffers. The high debt/equity ratio of 3.32, combined with ongoing buybacks, suggests that capital return may be prioritized over building a larger cushion. If regulatory requirements increase or credit costs rise, ING may have limited headroom to absorb shocks without cutting distributions.

The stability in provisions is reassuring, but it may not fully reflect the potential impact of a Dutch or German housing downturn. Given the high concentration in mortgages, any adverse macro shock could lead to a sharp increase in credit costs. The market may be underestimating this tail risk, especially as the bank's exposure to emerging markets like Poland and Turkey adds currency and geopolitical risk.