Twitter (TWTR) initiated, Facebook (FB) gets a price target boost and Apple (AAPL) exceeds estimates in Friday's Analysts' Actions. Oppenheimer is now following Twitter. The firm initiated coverage of the stock with a PERFORM rating and $36 price target. Oppenheimer says this was a valuation call since the social micro blogging site trades at a steep premium to its peers. Facebook's price target was raised to $91 from $86 by Citigroup. The firm revised its valuation for Facebook-owned Instagram to $35 billion from its previous estimate of $19 billion. Citi has a BUY rating for Facebook. Analysts at Morgan Stanley says Apple's iPhone Demand is blowing past their estimates for the December quarter. The report cites demand in China surging. Morgan Stanley has an OVERWEIGHT rating for the stock with a $126 dollar price target.