Financial markets aren’t resilient – loose monetary policy left markets over-leveraged and highly vulnerable

Now, however, is particularly inopportune timing for this fight. That is partly because big foreign buyers have quietly trimmed their Treasury purchases in the last year, and this might accelerate if chatter about a possible default grows louder. It is also because liquidity has repeatedly vanished from the Treasuries sector at times of stress in recent years, because of underlying vulnerabilities in the market structure. This could easily reoccur in a debt-ceiling shock, since these structural problems remain (lamentably) unaddressed. But the biggest reason to worry about the timing is that the financial system is at a crucial stage in the monetary cycle. After 15 years of accommodative monetary policy, during which the US Federal Reserve expanded its balance sheet from $1tn to $9tn, the central bank is now trying to suck liquidity out of the system, to the tune of about $1tn a year. This process is necessary, and long overdue. But it was always going to be difficult and dangerous. And if Congress spends the coming months convulsed by threats of default — since the Treasury’s ability to fund itself apparently runs out in June — the risks of a market shock will soar. A recent report from the American lobby group Better Markets outlines the wider backdrop well. This entity first shot to fame during the 2008 global financial crisis when it became a thorn in the side of Wall Street and Washington regulators because it complained loudly — and correctly — about the follies of excessive financial deregulation. Since then, it has continued to scrutinise the more recondite details of US regulation, complaining, again rightly, that the rules have recently been watered down. However, in a striking sign of the times, it now has another target in its sights: the Fed. Most notably, it thinks that the biggest danger to financial stability is not just the finer details of regulation, but post-crisis loose monetary policy. This left investors “strongly incentivised, if not forced, into [purchases of] riskier assets”, it “decoupled asset prices from risk and ignited a historic borrowing and debt binge”, the Better Markets report argues. Thus, between 2008 and 2019 the amount of US debt held by the public rose 500 per cent, non-financial corporate debt increased 90 per cent and consumer credit, excluding mortgages, jumped 30 per cent. Then, when the Fed doubled its balance sheet in 2020 in the midst of the pandemic, these categories of debt rose by another 30, 15 and 10 per cent respectively. And the consequence of this exploding leverage is that the system is today highly vulnerable to shocks as interest rates rise and liquidity declines — even before you factor in a debt-ceiling row.