http://online.barrons.com/article/SB50001424052748703591404578452681618149330.html?mod=BOL_options_home

http://www.bizjournals.com/chicago/news/2013/04/29/cboe-staffers-knew-issues-before-outage.html

http://www.reuters.com/article/2013/04/29/ice-grains-hours-idUSL2N0DG1P020130429

http://www.foxbusiness.com/news/2013/04/29/cboe-says-fully-confident-software-bug-resolved/

http://www.reuters.com/article/2013/04/29/cboe-delay-data-idUSL2N0DG0WN20130429

http://wallstreetsectorselector.com/2013/04/vix-advances-despite-positive-data/#

http://www.chicagotribune.com/business/breaking/chi-cboe-trading-outage-20130429,0,5267140.story?track=rss

http://www.chicagotribune.com/business/breaking/chi-chicago-board-of-trade-biscuit-break-roils-cbot-traders-20130429,0,5213027.story

http://blogs.wsj.com/moneybeat/2013/04/29/regulators-to-discuss-twitter-hoax-tuesday/

http://www.ifre.com/derivatives-clients-may-be-%E2%80%9Cleft-out-in-the-cold%E2%80%9D-come-clearing-deadline/21082699.article

http://blogs.barrons.com/focusonfunds/2013/04/29/about-that-friday-turnaround-in-the-price-of-gold/?mod=google_news_blog

http://www.nytimes.com/2013/04/29/business/media/social-medias-effects-on-markets-concern-regulators.html?adxnnl=1&adxnnlx=1367252073-a9OECMo+zvJp6w0tVTVvjQ