Salesforce ($CRM@US) surged 16 percent in premarket trading after beating Wall Street expectations in its latest earnings report. Best Buy ($BBY@US) dropped 1.9 percent premarket after its fiscal year earnings and revenue came up lighter than expected. Macy’s ($M@US) rose 7.3 percent after beating earnings and meeting revenue expectations. Silvergate Capital ($SI@US) plunged 37.6 percent following downgrades from JPMorgan and Canaccord Genuity. Okta ($OKTA@US) rose 15.8 percent after the digital authentication company beat top and bottom-line expectations for the fourth quarter.