After-hours buzz: Juniper, Alcoa, Marathon & more
Pedestrians walk past the New York Stock Exchange (NYSE) in New York. Michael Nagle | Bloomberg | Getty Images

Check out the companies making headlines after the bell Monday: Technology company Juniper Networks saw shares sink after it slashed earnings expectations for the March quarter. The networking company expects revenue of $1.09 billion to $1.1 billion, the company said in a statement, missing the prior guidance of $1.15 billion to $1.19 billion, based on weaker demand from its enterprise division. Earnings were also chopped down to between 35 cents per share and 37 cents per share, below the prior range of 42 cents to 46 cents per share, the company said Monday.

Shares of Alcoa edged lower after the aluminum and lightweight metals maker said it would cut 400 jobs, and was considering cutting up to 1,000 more, because of market conditions. The deep new job cuts come on top of 600 positions that were trimmed in the first quarter as Alcoa tries to strengthen its cost structure, according to a company statement. The manufacturing bellwether reported mixed results from the first fiscal quarter, with earnings of 7 cents per share on $4.95 billion in revenue. That's higher profits but lower sales than the 2 cents per share on $5.14 billion in revenue predicted by a consensus estimate from Thomson Reuters.