(Bloomberg) Ivana Delevska started buying Shopify Inc. stock when its slide was drawing comparisons to fallen Canadian tech darlings of years past like BlackBerry Ltd. But the company’s rally since then has made her exchange-traded fund one of the biggest winners in the US.Most Read from BloombergTraders Line Up for ‘Once-in-a-Generation’ Emerging Markets BetBlackstone Is Building a $25 Billion Empire of Power-Hungry Data CentersTrump Cash Stockpile at Risk From $450 Million Dual VerdictsAmaz