The NASDAQ index has moved back below its 100-day moving average at 13615.60. That index moved above its 100-day moving average on Tuesday and closed above it for 2 consecutive days. Those 2 days were one day longer than the October break which had only one close above its 100-day moving average.
The high price today reached 13697.82. The high price going back to October 12 reached 13714.14. The inability to get above that high and staying above, and the moving back below the 100-day moving average are bearish signals for the index.
Meanwhile, the S&P index reached a high today of 4393.40. That was short of its 100-day moving average at 4402.16. The S&P has not traded above its 100-day moving average since September 20. On September 21 the price gapped below the 100-day moving average and the price has not closed above that moving average since that time