Check out today's top analyst calls from around Wall Street, compiled by The Fly. CITI CUTS TESLA TO SELL: Citi analyst Itay Michaeli downgraded Tesla (TSLA) to Sell from Neutral and lowered his price target for the shares to $225 from $356. The analyst is making a "risk/reward call" into the outcome of the SEC lawsuit against CEO Elon Musk. In a scenario where the suit leads to Musk's exit, the analyst says there is "little question" that the departure would likely cause harm to Tesla's brand, stakeholder confidence and fundraising. This would increase the risk of triggering a "downward confidence spiral" given the state of Tesla's balance sheet, Michaeli said. Even if Musk were to stay on after settling or prevailing, the analyst believes the "reputational harm" from the suit "might still prevent the stock from immediately returning to 'normal.'" SUNTRUST UPGRADES LOWE'S TO BUY: SunTrust analyst Keith Hughes upgraded Lowe's (LOW) to Buy from Hold and raised his price target to $138 from $110. The analyst cites the company's latest Q2 earnings and the analyst meeting with its management suggesting an "internally focused" turnaround progressing at a "consistent pace" over the next 2-3 years. Hughes adds that even though the stock has recently turned higher, it could rise as much as 50% if the company could reclaim just half of the SG&A difference with Home Depot (HD). STIFEL STARTS ZYNGA WITH A BUY: Stifel analyst Drew Crum initiated Zynga (ZNGA) with a Buy rating and a price target of $5. The analyst cites the "favorable industry for mobile gaming", with annualized mobile gaming revenue expected to increase by 17%. Crum also cites his expectations of greater visibility on its game pipeline and further opportunities to improve adjusted EBITDA. WELLS DOWNGRADES CONTAINERSHIP NAMES: Wells Fargo analyst Michael Webber downgraded the Box Lessor and Containership group saying headwinds from both the International Maritime Organization 2020 fuel regulations and the impact of tariffs have created "significant downside risks" for the stocks. He downgraded Triton International (TRTN), CAI International (CAI) and Costamare (CMRE), all to Market Perform from Outperform, and cut Seaspan (SSW) and Textainer (TGH) to Underperform from Market Perform. He kept a Market Perform rating on Matson (MATX) with an unchanged price target of $35. EVERCORE BOOSTS NVIDIA PRICE TARGET: Evercore ISI analyst C.J. Muse said he believes investors are now more appreciative of Nvidia's (NVDA) opportunity in creating the AI industry standard and the company's "positive feedback loop" within deep learning. Longer-term, he sees tremendous growth opportunities led by the new Turing architecture, which further entrenches Nvidia's high-end gaming moat and presents a "meaningful" opportunity in Inference, Muse said. The analyst, who sees Nvidia being poised to grow EPS at a 30-35% CAGR through 2020 and beyond, raised his price target on the stock to $400 from $300 and kept an Outperform rating on the shares.