BUZZ-Canada's Fortress Paper enjoys best day ever on asset sale, leaseback
** Fortress Paper rises as much as 40.6 pct, its best intraday gain ever, after the pulp and security paper provider inks sale and leaseback deal for Swiss assets
** Company's Swiss unit to sell security paper business assets for ~C$59 mln and then lease them back for a 20-year triple-net lease, including deposit of ~C$660,000
** Up to Friday's close, stock had lost more than a third of its value in past 12 months
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