Key TakeawaysLululemon shares traded sharply lower in extended trading Thursday evening after the company issued guidance that came in below analysts' expectations amid softness in its Americas business.CEO Calvin McDonald said there's been a shift in U.S. consumer behavior that has led to a slower start to the year.The Lululemon share price may find support from an uptrend line and the nearby 200-day moving average around $431. Shares in Lululemon Athletica (LULU) plunged 11% in after-hours trading Thursda ...