Check out the companies making headlines after the bell:
Shares of Semtech dove 11.5 percent after hours following a mixed earnings announcement. The company beat earnings estimates but fell short of revenue estimates. The chip maker expects third quarter revenue between $145 million and $153 million and earnings per share between 48 cents and 52 cents.
Box shares tumbled 3 percent after hours despite beating earnings and revenue estimates. The cloud file syncing and sharing company reported free cash flow of negative $14.7 million after two positive quarters.
Shoe Carnival shares skyrocketed 13 percent in extended trading after beating second quarter earnings and revenue expectations. The shoe retailer's sales increased 1.4 percent. Its comparable sales increased 0.4 percent.
Five Below shares fell more than 1 percent in after hours trading, despite posting earnings and revenue above Wall Street expectations, and raising its guidance for the fiscal year.