Check out the companies making headlines after the bell on Monday:
Shares of Cognex popped roughly 15 percent after hours, following the company's second-quarter revenue and earnings beat.
Cognex reported second-quarter earnings of 50 cents per share on revenue of $147 million, compared to analysts' expectations of 43 cents per share on revenue of $138 million, according to a Thomson Reuters consensus estimate.
The machine vision systems manufacturer also reported a strong third-quarter guidance, driven by anticipated growth in its consumer electronics business segment. The company expected to see revenues ranging between $142 million and $147 million in the upcoming quarter.
Shares of Amkor Technology climbed nearly 12 percent in extended trading, after the company reported a second-quarter earnings and revenue beat.
Amkor reported second-quarter earnings of 2 cents per share on revenue of $917 million, compared to analysts' expectations of a loss of 1 cent per share on revenue of $869 million, according to a Thomson Reuters consensus estimate.
"Strong Android smartphone demand and a quicker recovery at our earthquake-damaged Kumamoto factory were the key drivers of our financial performance for the quarter," said Steve Kelley, Amkor's CEO.
The semiconductor packager reported strong third-quarter guidance, with expected revenue increases of 15 percent, driven by "the launch of mobile devices across multiple tiers," said Kelley.
Shares of Steve Madden dropped more 3.5 percent in after-hours trading. Earlier on Monday, B. Riley downgraded the fashion footwear designer to "neutral" from "buy," and cut its stock price target for Steven Madden to $40 from $47.
Analysts at Piper Jaffray credited Adidas' increasing popularity with female teens as a potential threat to the Steven Madden's market share. Piper Jaffray analysts also said they believe females with $60 to $80 are gravitating towards Adidas' Stan Smith or Superstar "over a fashion-branded sneaker."
Analysts expect the company to report second-quarter earnings of 42 cents per share on revenue of $330.12 million, according to a Thomson Reuters consensus estimates.
Shares of Texas Roadhouse dropped around 9 percent after hours, after the company reported a second-quarter revenue miss paired with an earnings beat.
Texas Roadhouse reported second-quarter earnings of 47 cents per share on revenue of $508.81 million, compared to analysts' expectations of 45 cents per share on revenue of $509.84 million.
Comparable restaurant sales increased 4.5 percent at company restaurants and 2.8 percent at franchise restaurants. The chain has opened 14 company-owned restaurants to date, and said it expects to open a total of 30 by the end of the year.