http://www.coindesk.com/regulators-approach-bitcoin-derivatives-market/

http://www.reuters.com/article/2014/05/16/cme-outages-ngfa-idUSL1N0O21JB20140516

http://www.businessweek.com/news/2014-05-18/staples-in-bears-grip-as-amazon-rivalry-curbs-growth-options

http://www.bloomberg.com/news/2014-05-18/10-biggest-banks-commodities-revenue-rises-26-amid-pullback.html

http://www.marketwatch.com/story/only-a-black-swan-will-bring-back-stock-volatility-2014-05-18?link=MW_latest_news

http://seekingalpha.com/article/2223903-volatility-breakout

http://www.bloomberg.com/news/2014-05-16/what-a-4-million-error-says-about-market-anxiety-opening-line.html

http://dealbook.nytimes.com/2014/05/16/wall-street-washes-traders-mouths-with-soap/?smid=tw-dealbook&seid=auto

http://www.thetradenews.com/news/Regions/Americas/Cross_border_and_HFT_issues_to_be_tackled_by_CFTC.aspx

http://www.reuters.com/article/2014/05/16/us-markets-stocks-idUSBREA460FR20140516

http://www.fow.com/3342983/US-options-markets-lose-share.html

http://www.tradersmagazine.com/news/regulation/high-speed-trading-firms-should-register-ex-cftc-economist-says-112465-1.html