And, as it's global liquidity that matters, the bowl is also kept brimming as the Bank of Japan continues to buy government bonds at pace. But a study looking at the U.S. banking shock that led to the failure of Silicon Valley Bank and Signature Bank last month and deposit runs across many regional banks suggests a different angle - a 'deposit glut' from within the richest countries that is increasingly unstable. "In a context of rising wealth inequality and growing corporate savings, an increasing share of bank deposits is uninsured and held by sophisticated agents," Vuillemey wrote. "This implies that these deposits are increasingly fragile, and that deposit insurance schemes ... are slowly losing bite." As illustrated in Technicolor in the SVB run, big uninsured deposits are volatile - sensitive as they are to any hint on the bank's health and moveable at push of a button.

---