According to Rick Rule during a July 7, 2026 interview with The David Lin Report at the Rule Symposium in Boca Raton, Florida, high-yield and subprime credit ETFs holding trillions in assets face significant liquidity mismatch risk. Rule said while ETF shares trade freely, many underlying bonds do not—some trading only once every six weeks. If fund managers are forced to sell such debt overnight to meet redemptions, prices will reflect the seller's distress rather than broader market value.
Rule cited the constraint on Federal Reserve intervention capacity: federal debt now stands near 120% of GDP compared to roughly 40% in 2008, limiting the Fed's ability to backstop markets without resorting to money printing.