Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. WestRock (WRK) upgraded to Buy from Neutral at BofA/Merrill with analyst George Staphos saying his takeaway from investor events attended last week suggests that the macro and sector trends for integrated containerboard companies are stable to improving and also believes that the risks in the industry are "not new." 2. Rockwell Automation (ROK) upgraded to Overweight from Equal Weight at Barclays analyst Julian Mitchell saying the stock remains out of favor with the investment community, but the recent earnings report suggests "grounds for optimism." 3. Splunk (SPLK) upgraded to Overweight from Equal Weight at Morgan Stanley with analyst Keith Weiss saying once Splunk is through its shift to a 100% recurring revenue model and annual invoicing, investors will have better visibility into a company well positioned for key secular trends in data and monitoring. 4. Owens Corning (OC) upgraded to Outperform from Market Perform at Wells with analyst Truman Patterson saying his industry contacts suggest Owens Corning announced an 8% U.S. residential insulation price hike for both loose-fill and batt and roll on Friday, effective January 13. 5. Wolverine World Wide (WWW) upgraded to Buy from Hold at Argus with analyst John Staszak saying he believes that the company will benefit from growth in footwear spending, particularly as the economy improves and consumer confidence increases. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.