The NASDAQ gapped down to breakout support which is also a Fibonacci level on the daily time frame. Unlike the Russell 2000, the support level is not one at the bottom of its range—so a loss would open up for a test of the 200-day MA and a mean reversion move.
The S&P has also tested breakout support, but has also tested its 50-day MA. If this support level gives way then there is a big gap down to its 200-day MA, which will cause a whole lot of pain should it occur.
All three lead indices have reached key support and with the week still young we could find ourselves in a very different situation by the time the week is out.