Shopify climbs on strong Q1 revenue forecast, up to $2 bln share buyback
** U.S.-listed shares of e-commerce platform Shopify SHOP.O rise 11.2% to $141.50 premarket ** SHOP expects revenue to rise at a low-thirties percentage rate in the first quarter, above analysts' average estimate of a 25.2% rise - LSEG-compiled data ** Co says Shopify's board has authorized a share repurchase program of up to $2 billion ** SHOP rose ~51% in 2025 (Reporting by Jaspreet Singh in Bengaluru) ((Jaspreet.Singh@thomsonreuters.com ; https://twitter.com/i_jass))