If price trades below $21.90, selling is advisable. Heavy sellers dominated from $26 to $20.77. Then buyers were able to retrace only till $23.60 - the recent high. Price is taking a dynamic resistance of 20 EMA - which is kind of strong trend indication. First Opposing Force for this fall can be expected around $20.25 to $19.70; further price can test $18.60 as well. Kindly do your analysis before taking any trades.