http://www.reuters.com/article/2014/05/06/cftc-trading-idUSL2N0NS1LA20140506

http://www.reuters.com/article/2014/05/06/us-sec-investigation-brokerage-idUSBREA450TZ20140506?feedType=RSS&feedName=businessNews

http://blogs.barrons.com/focusonfunds/2014/05/06/mechanics-back-to-normal-in-11-proshares-etfs/

http://www.forbes.com/sites/greatspeculations/2014/05/06/hashtag-panic-in-twitter-options-as-stock-sinks/

http://fointelligence.com/Article/3338035/CBOE-short-term-VIX-contracts-struggle-to-reach-traction.html

http://www.chicagotribune.com/business/breaking/chi-cboe-earnings-markets-20140506,0,5602895.story

http://www.cboeoptionshub.com/2014/05/05/goog/

http://www.reuters.com/article/2014/05/06/cboe-results-idUSL2N0NS03020140506

http://mninews.marketnews.com/content/research-paper-argues-hft-getting-less-vulnerable-criticism

http://www.investing.com/analysis/vix-futures-speculators-add-bearish-bets-211613

http://www.bloomberg.com/news/2014-05-06/yahoo-traders-more-bullish-than-ever-before-alibaba-ipo-options.html

http://blogs.wsj.com/moneybeat/2014/05/05/unusual-bullish-options-in-be-aerospace-swelled-last-week/