Share purchases on credit using margin financing doubles between July and December 2014 to $130 billion for the Shanghai and Shenzen stock exchanges. Retail investors open 370,000 accounts in Nov. 2014 alone. The Shanghai Stock Exchange share index went up by 25% in November 2014, and 50% since July 2014. The Securities Regulatory Commission made new restrictions on the use of riskier lower rated bonds as collateral for short term borrowing, and warned investors about rampant speculation. The sudden rise in the Shanghai index comes as investors shift away from investing in a cooling off property market, but creates its own set of risks especially with margin financing which could lead to quick downward spiral. A 5.4% drop in the Shanghai index on Dec. 9, 2014, leads to a 1-2% decline in global markets, at a time when oil prices decline added to uncertainty in the financial markets.