BGC Financial analyst Colin Gillis upgraded LinkedIn to Buy from Hold with a $250 price target ahead of the professional social network's Q3 results tomorrow. The stock is down over 10% since the analyst's downgrade on February 4. Management's commentary regarding the display advertising business is not a concern as it's a dated format, Gillis tells investors in a research note. He thinks investors should focus more on the trends in native advertising and remains positive on LinkedIn's "four diverse revenue streams." The stock is up $2.10 to $211.91 in afternoon trading.