Google parent Alphabet (GOOGL, $2,752.88) briefly added more than $180 billion in market value at the opening bell Wednesday after the search giant easily topped fourth-quarter estimates … and delivered on many investors' longtime wishes by announcing a 20-for-1 stock split.  An Alphabet stock split would not only make its A-class GOOGL shares and C-class GOOG shares more accessible to retail investors, but also perhaps open the door for inclusion into the elite Dow Jones Industrial Average one day.