Check out today's top analyst calls from around Wall Street, compiled by The Fly. AMC CUT TO SELL BY GOLDMAN: Goldman Sachs analyst Drew Borst downgraded AMC Networks (AMCX) to Sell from Neutral and lowered his price target for the shares to $61 from $64. The analyst expects AMC to underperform peers and his price target implies 8% downside to current levels. Weakness in National Networks advertising from "Walking Dead" ratings declines and heightened competition for scripted original series and viewers, as well as slowing revenue growth and higher content and marketing costs, create risk to consensus estimates, Borst said. SNAP TARGETS CUT BY EVERCORE, CITI: Evercore ISI analyst Anthony DiClemente lowered his price target for Snap (SNAP) to $7 from $9 given decelerating trends, management turnover, and competitive threats. He reiterated an Underperform rating on Snap's shares. Citi analyst Mark May kept a Sell rating on Snap, but again lowered his estimates -- also to $7 -- to reflect recent trends in user and average revenue per user growth, Q3 guidance and a projected 2018 exit growth rate. GOLDMAN SAYS FIREEYE STOCK COULD DOUBLE: Goldman Sachs analyst Gabriela Borges kept her Buy rating and $22 price target on FireEye (FEYE) after the company's annual Cyber Defense Summit. The analyst said the summit saw its strongest showing in three years and she believes Fireeye could see its shares double if it can gain just 200bps of market share in the endpoint and security information and event management, or SIEM, markets. Borges added that FireEye would have to improve its Helix business with "on premise integration" as well as "better messaging to the channel", expecting the company to proceed with a renewed scale push next year once the integration is complete. IBM STARTED WITH A SELL RATING: MoffettNathanson analyst Lisa Ellis initiated IBM (IBM) with a Sell rating and $150 price target. In late morning trading, IBM is down almost 1%. CLOUDERA GETS UPGRADED AFTER DEAL: Nomura Instinet analyst Christopher Eberle upgraded Cloudera (CLDR) to Buy from Neutral and raised his price target for the shares to $23 from $12. The analyst, who admits to being very surprised by the announced deal, believes the company's merger with Hortonworks (HDP) will be "highly accretive." DA Davidson analyst Rishi Jaluria upgraded Cloudera to Buy from Neutral and raised his price target to $27 from $15 while also affirming Hortonworks at Buy and raising its price target to $35 from $24. The analyst is positive on the merger's ability to reduce pricing pressure from the separation from the other Hadoop vendors, equip Cloudera to battle cloud data warehouse vendors like AWS (AMZN) Redshift, and accelerate innovation.