In Thursday’s Analysts' Actions, Wall Street firms chime in on Twitter (TWTR), Sprint (S), and EMC (EMC). Analysts at Wells Fargo raised their rating on shares of data storage company EMC to OUTPERFORM from MARKET PERFORM due to a more favorable risk/reward balance. The firm also increased its price target range, saying it expects potential strategic changes before the end of the year. Analysts at Brean Capital are cut their price target on shares of Twitter, ahead of the micro-blogging company's earnings release next week. The firm lowered its price target to $47, citing near-team risks. And analysts at Jefferies are hanging up on Sprint. The firm slashed its price target on the phone carrier to $3, while keeping an UNDERPERFORM rating. TheStreet's Kurumi Fukushima reports in New York.