** Shares in Stora Enso STERV.HE rise 15% to the top of STOXX 600 index .STOXX after the Finnish forestry group announced a strategic review of its Swedish forest assets
** The evaluation of options of the group's EUR 5.8 billion assets includes potential separation and public listing of the assets through a partial demerger
** Jefferies sees the review as a positive catalyst
** In the broker's view it might spark a full take private of the Sweden forest by a consortium of insurers & financial investors, which could result in the greatest value unlock
** The broker sees forest value upside as underappreciated
** In May Stora Enso divested 12.4% of its forest holdings in Sweden
** Shares on track for best day since October 2008
(Reporting by Anna Chaberska)
((Anna.chaberska@thomsonreuters.com;))