Stocks make the biggest moves by hours: Box, Coupa and more

Take a look at the companies that make headlines after the clock :

Shares in Box dropped nearly 11% in extended trading after the cloud operations lowered the guidance for the current fiscal year. Box now expected full-year revenue between $ 688 million and $ 692 million, down from a previously stated range of $ 700 million to $ 704 million. The company reported a loss of 3 cents per share in the quarter and revenues of $ 1[ads1]63 million, Wall Street estimates peaked at a loss of 5 cents per share and a turnover of $ 161.4 million.

Coupa Software stock jumped over 4% after the company achieved a surprise result and reported results in the quarter that hit analysts' expectations top and bottom. Coupa reported a revenue of 3 cents per share on revenue of $ 81.3 million, while analysts had expected a loss of $ 4 per share on $ 73.9 million in revenue.

Shares of Continental Resources jumped nearly 3.5 percent after the petroleum and natural gas company announced a $ 1 billion share buy-back program.

Shares of real estate investment fund Ventas fell 2% after announcing a secondary offer of 11 million shares. The company intends to use the proceeds to finance an acquisition. Morgan Stanley, Citigroup and J.P. Morgan is the joint accounting manager for the offer.