Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Nike (NKE) upgraded to Neutral from Underperform at BofA/Merrill with analyst Robert Ohmes saying that he expects the "accelerated democratization" of the brand to offset the broader future challenges around "significant" third-party retail store closures and global stagnation in "performance" footwear/apparel. 2. Western Digital (WDC) upgraded to Buy from Hold at Loop Capital with analyst Ananda Baruah citing his findings that flash memory average selling prices are set to increase starting in the September and December quarters while also sustaining those increases in 2020, along with expectations of strong hyperscale HDD demand next year. 3. Varian Medical (VAR) upgraded to Buy from Neutral at BTIG with analyst Sean Lavin saying Varian shares have pulled back in recent weeks and now trade in line with the comp group. 4. Xilinx (XLNX) upgraded to Buy from Neutral at Nomura Instinet with analyst David Wong saying many risks remain for U.S. semiconductor companies, including uncertainties related to U.S./China trade issues and U.S. action against Chinese companies such as Huawei. 5. HP Enterprise (HPE) upgraded to In Line from Underperform at Evercore ISI with analyst Amit Daryanani saying he is incrementally more positive on cash flow resiliency, the Cray acquisition, recent data points that indicate H3C is performing better than other OEMs in China, and valuation. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.

Sees Q4 revenue $3.6B-$3.8B, consensus $3.69B.

Reports Q3 GAAP EPS 34c. Reports Q3 revenue $3.46B, consensus $3.36B. "As evidenced by our excellent third quarter results, Western Digital continues improving through-cycle profitability and dampening business cycles by leveraging our strategy of developing a diversified portfolio of industry-leading products across a broad range of end markets," said David Goeckeler, Western Digital CEO. "We are in the early innings of unlocking the full potential of this company, and as industry supply and demand dynamics continue to improve, we will remain disciplined around our capital spending and focused on driving innovation and efficiency across our businesses. We are confident in our strategy and the actions we have taken to-date, which successfully position us to capitalize on the promising growth prospects that lie ahead."

Pre-earnings options volume in Western Digital is 1.4x normal with calls leading puts 7:5. Implied volatility suggests the market is anticipating a move near 6.2%, or $4.32, after results are released. Median move over the past eight quarters is 2.1%.