This development on the foreign exchange front may be a factor...

CHINA ORDERS BANKS TO STOP PURCHASING U.S. DOLLARS!
Investment Watch Blog
Jan 10, 2016
http://bit.ly/1N1rv0P

[snip]

In a stunning move, China has suspended some banks from Foreign Exchange markets and ordered other banks to stop buying Dollars.

China’s foreign exchange regulator has ordered banks in some of the country’s major import and export centers to limit purchases of U.S. dollars this month, three people with direct knowledge said, in the latest attempt to stem capital outflows.

The move comes as China reported its biggest annual drop in foreign exchange reserves on record in 2015, while the central bank has allowed a sharp slide in the Yuan currency to multi-year lows, raising fears of more capital flight.

All banks in certain trading hubs, including Shenzhen, received the order recently, the people added. They declined to be identified because they are not allowed to speak to the media.