Nasdaq and S&P 500 show signs of technical deterioration

US equity markets are showing signs of significant internal deterioration, with technical indicators suggesting a potential transition toward a market stress regime. While headline indices like the S&P 500 and Nasdaq have seen recent price bounces, underlying market breadth has weakened considerably.

In the Nasdaq, internal weakness is marked by 164 new lows compared to only 33 new highs. Only approximately 23.5% of Nasdaq stocks remain above their 20-day simple moving average (SMA20). Similarly, the Nasdaq 100 has broken below its 100-day moving average, shifting the technical bias toward sellers.

The S&P 500 has also lost its 20-day SMA, with only 24.7% of its constituent stocks trading above that level. Long-term breadth for both the S&P 500 and Nasdaq has fallen below 60%. While advancing volume has recently shown some constructive signs, analysts note that a true recovery will require a collapse in the number of new lows and a stabilization of breadth indicators.