 Shares of Expensify Inc. EXFY, 11.54 were rocketing 12 in Monday morning trading after Bank of America analyst Koji Ikeda turned bullish on the expense-management companys stock, upgrading it to buy from neutral. Expensify has just 140 employees, and Ikeda thinks that its lean business model will help the company pivot quickly from higher rev growth to higher EBITDA margins. 