The $SPX just went from 53 consecutive days without a single -1% drop to five -1%+ drops in the past 20 days.

That's the shift. Volatility regimes don't announce themselves with a press release — they show up in the price action. We went from cruise control to chop in a blink.

This is what mean reversion looks like in real time. Long stretches of calm breed complacency, then the market reminds everyone that 1% moves are normal, not newsworthy.

If you got comfortable with the grind-up, recalibrate. If you're waiting for "the bottom," remember: volatility clusters. More of this is likely before things smooth out again.

Stay sized appropriately. This is the part of the cycle that separates disciplined investors from overleveraged tourists.