BUZZ-Tesla falls as Q4 profit margin misses estimates

** Shares of electric-vehicle maker Tesla TSLA.O fall 2.4% to $379.41 in extended trading

** Company reports Q4 profit of 73 cents/shr vs est. of 76 cents/shr

** Q4 gross margin stood at 16.3% vs est. of 19.03%

** Tesla reports Q4 revenue of $25.71 bln, compared with est. of $27.27 bln, according to data compiled by LSEG

** Up to last close, stock had more than doubled in the past 12 months