Check out the companies making headlines after the bell on Thursday:
Shares of Broadcom slid more than 1.5 percent despite the company's earnings and revenue beat.
Broadcom reported third-quarter earnings of $2.89 per share on revenue of $3.79 billion. Analysts expected $2.77 per share on revenue of $3.76 billion, according to a Thomson Reuters consensus estimate.
The company raised its dividend from 50 cents to 51 cents a share.
Shares of Ambarella dropped more than 5 percent despite the company's earnings and revenue beat.
Ambarella reported second-quarter earnings of 54 cents per share ex-items on revenues of $65 million, compared to expectations for earnings of 38 cents per share on revenues of $64 million, according to a Thomson Reuters consensus estimate.
Shares of Lululemon Athletica dropped more than 7.5 percent in extended trading after the company reported weak guidance for its current quarter.
The Canadian yoga wear retailer said it expects third-quarter revenue of $535 million to $545 million. That compares to analysts' expectations of $542 million, according to a Thomson Reuters consensus estimate.
The company also gave weak third-quarter EPS guidance in a range of 42 cents to 44 cents a share. Wall Street expected the top end of that range, 44 cents per share, according to a Thomson Reuters consensus estimate.
Lululemon reported adjusted second-quarter earnings of 38 cents per share on revenues of $515 million, in line with analysts' expectations of 38 cents per share on revenues of $515 million, according to a Thomson Reuters consensus estimate.
Shares of Smith & Wesson edged lower in extended trading after the gun maker reported earnings and revenue that beat estimates.
The company reported earnings of 62 cents per share on revenue of $207 million. Analysts were expecting 53 cents per share on revenues of $198 million, according to a Thomson Reuters consensus estimate.
Shares of Gap dropped more than 2 percent in extended trading after it reported sales for August.
The company reported a 2 percent decline in net sales for the four-week period. Comparable sales were also down 3 percent.