SPX Is Still Near the Highs. Underneath It, Breadth Just Got WorS&P 500SP_DLY:SPXTradeSentinelNotes1️⃣ What is it today? Early deterioration inside an intact primary trend. SPX remains above its major intermediate and long-term averages. But short-term participation has weakened again. Only 42.3% of S&P stocks and 46.1% of Nasdaq stocks remain above SMA20. Long-term breadth is still healthy near 69% above SMA200. So the structure isn't broken. The internals are simply no longer confirming price cleanly. 2️⃣ Thesis Last week's breadth weakness failed to repair. That's the change. And Nasdaq leadership deteriorated sharply: 44 new highs vs 96 new lows. Meanwhile VIX/VIX3M remains extremely calm at 0.83. That combination raises complacency risk. 3️⃣ What validates the bull case? I want to see: SPX hold/reclaim SMA20 around 7,713 SMA20 breadth move back above 50% Nasdaq new lows collapse from 96 new highs recover VIX/VIX3M remain contained SMA200 breadth stay near 65–70%+ That would still define this as a healthy correction/rotation. 4️⃣ What validates deterioration? Watch for: breadth toward 30–40% Nasdaq new lows >100 persistently SPX loses SMA20 and moves toward SMA50 volatility begins repricing SMA200 breadth rolls over That would be a much more serious regime change. What matters 96 Nasdaq new lows. That is currently more important than whether SPX is up or down 0.25%. What is mostly noise The VIX staying near 14–15. Low volatility does not invalidate deteriorating breadth. TradeSentinel Takeaway One week ago, the market was being asked to prove participation. It didn't.