I bought $SQ at $39 and sold at $93 because of "valuation". I learned my lesson, considering they are sitting at well over $200 per share, with blowout growth. The lesson learned? Valuation can remain irrational longer than we can remain solvent, or, does valuation make sense? We can sit here and discuss it all day and justify our bull and bear thesis, but obviously, the market pulled it higher.