Financial regulators have made a bold move by mandating a 100% minimum margin requirement for leveraged stock purchases—essentially eliminating margin trading as we know it. This isn't just about one market; it signals a broader tightening cycle aimed at cooling speculative behavior and containing systemic risks. For anyone tracking how traditional finance manages volatility, this is telling. When regulators start pulling back the leverage lever hard, it typically signals they're worried about bubbles forming. The ripple effects? Reduced leverage activity, tighter liquidity conditions, and potentially reallocated capital flows. Whether this precedent influences other asset classes remains to be seen.