Key facts
- US regional banks' accumulated other comprehensive income (AOCI) losses widened in the second quarter of 2026.
- Rising long-term interest rates pressured the value of fixed-rate securities.
- Aggregate negative AOCI among seven analyzed banks increased by $951 million.
- The total negative AOCI reached $12.9 billion, the highest level in the past year.
US regional banks experienced a widening of their accumulated other comprehensive income (AOCI) losses in the second quarter of 2026. This deterioration was driven by an increase in long-term interest rates, which negatively impacted the valuations of their fixed-rate securities portfolios. According to an analysis by Risk Quantum, the aggregate negative AOCI among seven regional banks grew by $951 million, or 8%, during the quarter. This brought the total negative AOCI to $12.9 billion, marking the highest level observed over the preceding year. The report specifically mentions Fifth Third Bank as one of the institutions analyzed.