Big US banks have curbed the amount of excess cash they allow companies to squirrel away in their deposit accounts, liquidity risk disclosures show.

The liquidity coverage ratio (LCR) requires banks to calculate their net cash outflows – the difference between incoming and outgoing cash – in a 30-day period of stress, and hold enough high-quality liquid assets (HQLA) to meet this amount. Distinct run-off rates are applied to different types of outflows to reflect how likely a bank’s depositors