Let's check out the Yahoo Finance charts of the day. Delta Airlines (DAL): Shares are down in early trade, at around .25%. Reuters is reporting that the airline has hired two investment banks to help sell its stake in its refining subsidiary. Exxon (XOM): Shares are up here, at around .23%. Exxon Mobile signed a framework agreement for a proposed chemical complex in China. The project would meet expected chemical demand growth in China. Facebook (FB): Shares down here, at around 1.29%. Facebook said it will invest over $1billion to build a data centre in Singapore, its first in Asia, powered by renewable energy and adapted to the city-state's tropical climate. The centre is expected to be operational around 2022. For more on today's big stock movers check out the Final Round, live at 3:30 p.m. ET, right here on Yahoo Finance.