for "nightl business report," i'm diana olick inwashington. >>> it's time to take a look at some of today's upgrades and downgrades. exxonmobil's rating was cut to market perfo from outperform at cowen. the analyst ces concerns over its investment strategy. the price target is $75. the stock fell more than 1% to $79.01. >>> netflix was downgraded to neutral from buyt buckingham. the analyst cites concerns over new competitive threats and the departure of its chief marketing officer.et the price tas $382. the shares fell a fraction to $349.60. >>> the cannabis company tilray was initiated with an r underperfoing at jeffries in new coverage. the analyst cites the stock's valuation. the price target$61. despite the new rating the stock rose a fraction to $70 even. >>> still ahead, looking for some value in your stocks? this week's market monitor has so food for though >>> the united kingdom is scheduled to leave the european union is just three, we and still thes no approved plan that outlines exactly how that's going to happen. now, that has created a lot of uncertainty for many businesses, e