Check out the companies making headlines after the bell Monday:

Shares of Chipotle Mexican Grill (NYSE: CMG) dipped after the bell after it announced a new loyalty program for the summer. The "Chiptopia" program will reward customers for making multiple paid visits within a month rather than on the total amount spent, or by accumulating points, Reuters reported . It comes as the company has doled out freebies over the past months, trying to bounce back from high-profile outbreaks of E. coli, salmonella and norovirus late last year.

SolarCity (NASDAQ: SCTY) saw shares stumble after the company announced the formation of a special committee to evaluate an acquisition bid from Tesla (NASDAQ: TSLA). The electric car maker offered to buy the renewable energy company last week for $26.50 per share to $28.50 per share, sending SolarCity shares soaring Tuesday . But most of the company's board, like Elon Musk, have since had to pull back from voting on the deal as they are involved in both companies.

Cruise company Carnival (NYSE: CCL)'s stock inched up ahead of its Tuesday morning earnings release. The company is expected to report earnings of 39 cents per share in the second fiscal quarter, on revenues of $3.68 billion, according to a Thomson Reuters consensus estimate. But as Britain's exit from the European Union has weighed on currencies and travel stocks, Carnival may be conservative in its report, analysts told Barron's.

Shares of semiconductor company Skyworks (NASDAQ: SWKS) popped in extended trading after the Apple (NASDAQ: AAPL) supplier announced it would power the flagship smartphones of Chinese firm Huawei. Skyworks' semiconductors will be in the Huawei P9 and P9 Plus smartphones, the companies announced. Fellow semiconductor company Qualcomm (NASDAQ: QCOM) also rose after the news.

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