BUZZ-Cineworld: top of FTSE 250 after Canaccord Genuity upgrade

** UK cinema chain Cineworld shares up 3.5 pct & top riser on FTSE 250

** Canaccord Genuity (Frankfurt: A0B6V4 - news) raises rating on stock to "buy" from "hold" (slashes target price to 300p from 700p)

** Broker cites very significant earnings upside combined with the fall in Cineworld’s share price, following the announcement of the Regal Entertainment reverse take-over

** Stock down by about a fifth since end-Nov when co confirmed it was in advanced discussions to acquire Regal Entertainment

** "Understandably, some shareholders have been highly critical of the decision to enter the U.S. It’s a deal fraught with execution risk but the action plan is credible and Cineworld management has a good track record of delivery," broker says

** Broker reckons share price could be "super-charged" by the timing opportunity of completing the synergy extraction into a strong film slate in 2019 and 2020