Check out today's top analyst calls from around Wall Street, compiled by The Fly.

GOLDMAN RESHUFFLES RATINGS ON SEMICONDUCTOR STOCKS: Goldman Sachs analyst Toshiya Hari added Nvidia (NVDA) to his firm's Conviction List and kept a Buy rating on shares, upgraded Keysight Technologies (KEYS) and NXP Semiconductors (NXPI) to Buy, upgraded Texas Instruments (TXN) to Neutral, downgraded Teradyne (TER) to Neutral, and downgraded Analog Devices (ADI) and Maxim Integrated (MXIM) to Sell in a re-stacking of his ratings in the Semiconductors space.

OPCO UPGRADES NIKE TO OUTPERFORM: Oppenheimer analyst Brian Nagel upgraded Nike (NKE) to Outperform from Perform with a $90 price target after re-launching coverage of the name. Nike represents an "already dominant, legacy global brand that is now aggressively embracing the power of digital to enhance most facets of its business," Nagel believes. The analyst, who admitted his call on the stock is longer term in nature and not necessarily pegged to near-term data points, said Nike's sales trends over the past several quarters have "rebounded meaningfully" as its internal initiatives started to take hold and industry pressures eased. He's optimistic that Nike and the broader athletic group are now "through recent woes," and he views management's guidance for upper single-digit sales growth as at least achievable.

IBM CUT TO HOLD AT ARGUS: Argus analyst James Kelleher downgraded IBM (IBM) to Hold from Buy after its Q3 revenue miss, saying the company's growth prospects are "fading." The analyst noted that revenues have "flipped back to negative" while margin in key business segments have shrunk. Kelleher added that even though the stock is trading at a discount, a Hold rating is "appropriate" until the company can show "consistent top-line growth, margin expansion, and earnings acceleration."

JPMORGAN CUTS GAP TO UNDERWEIGHT: JPMorgan analyst Matthew Boss downgraded Gap (GPS) to Underweight from Neutral and lowered his price target for the shares to $24 from $30. To reflect continued sales weakness at the core Gap brand and greater gross margin pressure in the second half of the year, Boss lowered his second half earnings per share estimate to $1.33, below the Street at $1.39. He also dropped his fiscal 2019 earnings per share estimate to $2.38, or 12% below the Street at $2.70. The timeframe for sequential same-store-sales improvement at the Gap brand and a return to the "momentum" last seen in the second half of 2017 is now less certain as the brand grapples with operational issues and an "assortment imbalance," Boss said.

GOOGLE STARTED WITH AN OUTPERFORM AT WEDBUSH: Wedbush analyst Michael Pachter initiated coverage of Alphabet (GOOG, GOOGL) with an Outperform rating and $1,350 price target. In a research note titled "Long Live the Ad King," Pachter said he expects Google to "maintain positive ad momentum" even amidst pressure from Facebook (FB) and Amazon.com (AMZN). The analyst also believes cost control efforts will drive better than expected Q3 results when Alphabet reports its quarterly results on October 25.