Google parent Alphabet misses earnings targets, stock falls (GOOG)

Google's parent company Alphabet missed its fourth-quarter earnings, sending the stock down slightly in after-hours trading.
The company is paying more in traffic acquisition costs (TAC), which has been a concen as searches shift from desktop to mobile.
Alphabet also announced an $8.6 billion share buyback and a new chairman of its board.Alphabet, Google's parent company, posted disappointing results in its fourth-quarter earnings report, as rising expenses to reach smarpthone users and increase