The stock market is off to a busy start on Thursday, with some of the biggest premarket movers including Dish Network, Target, Zoom, and Arconic.

Dish Network is leading the pack with a premarket surge of more than 10%, following a strong fourth-quarter earnings report. The satellite television provider reported better-than-expected revenue and earnings, and said it added more than 800,000 subscribers during the quarter.

Target shares are up 5% in premarket trading after the retailer reported fourth-quarter earnings that beat expectations. Target said it saw strong online sales growth, and it also raised its quarterly dividend by 10%.

Zoom shares are up almost 4% in premarket trading after the video conferencing company reported better-than-expected fourth-quarter earnings. Zoom said its revenue more than doubled during the quarter, and it also announced plans to expand its product offerings.

Arconic shares are up 3% in premarket trading after the aerospace and automotive supplier reported better-than-expected fourth-quarter earnings. Arconic said it saw strong demand for its products, and it also raised its dividend by 8%.

Other stocks making big moves in premarket trading include Tesla, which is up 2%, and Microsoft, which is down 1%.