I'm looking at the weekly price charts for clues on how far the sell-off could drop before any significant buying shows up. The idea is to go back to that spot where previous buying came in after a period of steady selling. Nonetheless, technical analysts will be watching these levels to see how other indicators line up, bullish or bearish. Here's the weekly price chart for the Nasdaq Composite Index:Significant buying showed when the Nasdaq dropped down in late January/early February 2018 to the 6600 price level. Here's the Russell 2000 weekly price chart:What's different about this chart than the 2 charts above it: the price has taken out the previous significant buying spot that showed up in late January/early February 2018 for the S&P and the Nasdaq.

Source: Forbes December 15, 2018 17:43 UTC