Catch up on today's top five analyst actions with this list compiled by The Fly: 1. Gol Linhas (GOL) upgraded to Buy from Neutral at Goldman Sachs with analyst Bruno Amorim saying the suspension of Avianca Brasil's operations on May 24 should provide a "significant boost" to unit revenues in the Brazilian domestic market in upcoming quarters. 2. Cinemark (CNK) upgraded to Buy from Hold at Loop Capital with analyst Alan Gould saying the "tough" comp facing the company in Q2 is now priced into the shares. 3. Latam Airlines (LTM) downgraded to Sell from Neutral at Goldman Sachs with analyst Bruno Amorim saying "fierce" competition in the Spanish speaking countries and "still weak" pricing in the international markets will likely offset the positive effect from Avianca Brasil's bankruptcy. 4. Inogen (INGN) downgraded to Underweight from Neutral at JPMorgan with analyst Robert Marcus, who continues to view Inogen as a "potentially attractive story" longer-term, saying he believes the company's near-term outlook is weighed down by uncertainty and market headwinds. 5. Merck (MRK) initiated with a Buy rating and a $97 price target at Mizuho. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.