http://www.interactivebrokers.com/en/?f=5599&vid=3826

http://www.futuresmag.com/2014/09/24/september-solid-month-for-options-volume

http://online.barrons.com/news/articles/SB52784017629588234037504580176033675119618

http://www.interactivebrokers.com/en/?f=5599&vid=3820

http://www.bloomberg.com/news/2014-09-24/shorting-alibaba-costs-7-to-borrow-shares-after-ipo.html

http://www.bloomberg.com/news/2014-09-24/emerging-market-bulls-bet-against-fed-shock-on-equities.html

http://www.marketwatch.com/story/academics-propose-redefining-roles-to-curb-high-frequency-trading-abuses-2014-09-24

http://www.zacks.com/stock/news/148326/cme-group-faces-stiff-competition-growth-likely-to-suffer

http://online.barrons.com/news/articles/SB52784017629588234037504580174121173767614

http://www.chicagotribune.com/business/breaking/sns-wp-blm-news-bc-fed24-20140924-story.html#page=1

http://www.marketwatch.com/story/what-to-do-in-a-world-of-rising-volatility-2014-09-24

http://www.bloomberg.com/news/2014-07-23/don-t-tell-anybody-about-this-story-on-hft-power-jump-trading.html