Current repo market stress is a structural problem caused by tight bank regulations, not a simple liquidity issue. To effectively shrink its balance sheet (QT), the Fed must first ease capital requirements. This counterintuitively acts as a nominal growth impulse by freeing banks to lend.

Recent increases in funding market spreads suggest banking reserves may be too restrictive. This puts pressure on the Federal Reserve to end its balance sheet runoff (QT) sooner than its official timeline, creating a potential for market disappointment if the Fed delays its decision.

A major regime change is underway to "reprivatize the financial system." This involves shrinking the Fed's footprint and loosening bank regulations to compel commercial banks to step back into their pre-GFC role as the primary creators of credit and market liquidity, reducing reliance on the central bank.

Contrary to the push for an "efficient" (smaller) Fed balance sheet, an abundance of reserves increases bank safety. Bank reserves are immediately accessible liquidity, unlike Treasuries which must be sold or repoed in a crisis. This inherent buffer can make the banking system more resilient.

A new Fed Chair advocating for a smaller balance sheet cannot simply sell assets without causing market volatility. The Fed must first implement complex, long-term regulatory changes to reduce commercial banks' demand for reserves. This involves coordination with the Treasury and is not a quick policy shift.

Unlike past crises, the Federal Reserve is unlikely to provide the next wave of market liquidity via its balance sheet. With rates far above zero, its primary tool is rate cuts. Instead, any new liquidity will likely originate from commercial banks, which are being deliberately deregulated to encourage credit creation.

The G-SIB proposal aims to reduce year-end repo market volatility. However, the market has already proactively managed this risk by shifting activity into sponsor repo, lessening the overall effect of the regulatory changes, making them more modest than they appear on paper.

The trillions needed for the AI revolution exceed government capacity. The next economic phase will shift from central bank quantitative easing to unleashing commercial bank balance sheets. Regulatory changes, like adjusting the SLR, will enable banks to provide the necessary leverage, echoing the Greenspan-era 90s boom.

While often overlooked, easing regulatory policy is a powerful stimulus. The finalization of key capital rules is expected to free up approximately $5.8 trillion in balance sheet capacity for globally important banks, a significant but opaque driver of market liquidity that is separate from monetary or fiscal actions.