Tesla (TSLA) gapped down and fell sharply in early October, but ultimately held support from the July low and rising 200-day moving average. The stock moved higher the last four weeks and surged above the September trend line with a 3+ percent gain on Tuesday. Also notice that Aroon Up crossed above Aroon Down to trigger a bullish signal. Traders can mark support at the early November low and 200-day. You can read more about the Aroon indicators in our ChartSchool.