Tesla ($TSLA@US) dropped 7 percent in Thursday’s premarket trading after the electric vehicle maker reported net income and earnings that declined 20 percent from last year. F5 ($FFIV@US) fell 7 percent after the cloud-based software company posted mixed fiscal second-quarter results and announced a 9 percent cut of its global workforce. Las Vegas Sands ($LVS@US) gained 5.5 percent in premarket trading after topping earnings and revenue estimates for the first quarter. Zions Bancorporation ($ZION@US) fell 4.5 percent after the regional ban reported earnings and revenue that missed expectations.