Check out the companies making headlines after the bell:
Chegg shares surged as much as 10 percent after hours on Monday following an earnings beat. The educational technology company beat on the top and bottom lines. Earnings per share were 25 cents, beating estimates by 4 cents. Revenue was $95.7 million, vs. the forecast $91.7 million. The company issued strong guidance for this quarter and 2019. The stock has more than doubled its value over the past year.
Amkor Technology shares dropped more than 5 percent in extended trading Monday based on weak first-quarter sales guidance despite better-than-expected earnings. The apple-supplier reported earnings of 19 cents per share on revenues of $1.08 billion. Analysts has expected earnings per share of 8 cents on revenues of $1.06 billion. The company said weak sales guidance reflects an inventory correction currently underway in the smart-phone market.