In Tuesday's Analysts' Actions, Topeka Capital Markets starts coverage of Twitter (TWTR) and LinkedIn (LNKD) and Frontier Communications' (FTR) future looks promising. Analysts at Topeka Capital Markets are optimistic of Twitter, but they're seeing some upcoming headwinds. The firm started coverage with a HOLD rating and a price target of $35. Analysts said employee turnover and an ongoing CEO search could delay product development. The firm is bullish on LinkedIn. It started coverage with a BUY rating and a price target of $260. Analysts said the company has unique assets and its four business, which include Talent, Marketing, Sales and Training have a capacity of growing 30% yearly. And, JPMorgan upgraded Frontier Communications shares to OVERWEIGHT from NEUTRAL. The firm said strong second quarter earnings results and the company's net broadband subscriber additions during that quarter all came ahead of their estimates. However, analysts dropped its price target to $6 from $7. TheStreet's U-Jin Lee reports from New York.