http://www.hedgeweek.com/2016/02/02/236128/cboe-futures-exchange-reports-gain-january-2016-trading-volume

http://www.valuewalk.com/2016/02/why-was-2015-such-a-terrible-year-for-hedge-funds-three-reasons/

http://www.seeitmarket.com/options-traders-position-for-return-of-market-volatility-trading-15275/

http://www.bloomberg.com/news/articles/2016-02-02/hong-kong-property-stock-gloom-seen-deepening-in-options-market

http://www.chicagotribune.com/news/sns-wp-blm-markets-110356a4-c9f9-11e5-b9ab-26591104bb19-20160202-story.html

http://www.bloomberg.com/news/articles/2016-02-02/china-unleashes-new-steps-to-control-financial-risks-outflows

http://www.bloomberg.com/news/articles/2016-02-02/u-s-index-futures-drop-as-oil-rout-triggers-global-risk-selloff

https://theoptionsinsider.com/january-2015-trading-volume-reported-by-cboe-holdings/

http://finance.yahoo.com/news/u-brokerages-consider-revamping-procedures-205400153.html;_ylt=A0LEVj3NvLBWOKYAxV4nnIlQ;_ylu=X3oDMTByMjB0aG5zBGNvbG8DYmYxBHBvcwMxBHZ0aWQDBHNlYwNzYw–

http://www.cboeoptionshub.com/2016/02/01/trading-tactics-how-to-deal-with-a-slump/

http://www.bloomberg.com/news/articles/2016-02-02/for-once-low-oil-prices-may-be-a-problem-for-world-s-economy

http://www.reuters.com/article/derivatives-clearing-idUSL2N15G1IR