http://www.advancedtrading.com/regulations/new-regulations-rank-as-top-risk-dtcc-s/240154664

http://online.barrons.com/article/SB50001424052748703591404578456941057478964.html?mod=BOL_columnist_latest_col_art

http://www.fool.com/investing/general/2013/05/09/the-most-valuable-model-ever-created.aspx

http://www.businessweek.com/news/2013-05-10/ise-cancels-jumbo-s-and-p-500-options-trading-on-liquidity-concerns

http://www.courthousenews.com/2013/05/10/57512.htm

http://www.reuters.com/article/2013/05/09/usa-cftc-regulations-cotton-idUSL2N0DQ3KK20130509

http://www.tradersmagazine.com/news/off-exchange-trading-falls-to-35-percent-in-april-111185-1.html

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

http://www.advancedtrading.com/exchanges/bats-chi-ex-europe-wins-recognized-inves/240154571

http://www.marketintelligencecenter.com/articles/277428

http://www.bloomberg.com/news/2013-05-09/oil-options-volatility-rises-from-three-week-low-as-crude-falls.html

http://wallstreetsectorselector.com/2013/05/vix-rebounds-on-thursday/#