Discover Financial Services (DFS) has been benefiting on the back of a growing loan portfolio resulting in higher net interest income. Strong growth in PULSE volume, collaborations and sound cash reserves also act as tailwinds for the stock. Zacks Rank & Price PerformanceDiscover Financial carries a Zacks Rank #3 (Hold) at present.The stock has gained 28.1% in the past three months compared with the industry’s 31.5% growth. The Finance sector rallied 15.2%, while the S&P 500 Composite Index increased 11.1% ...