http://www.reuters.com/article/2014/04/29/us-regulations-summit-bradley-idUSBREA3S0XF20140429

http://uk.reuters.com/article/2014/04/29/sec-highspeed-trading-idUKL2N0NL0ZA20140429

http://www.bloomberg.com/news/2014-04-29/nyse-options-markets-cancel-almost-20-000-trades-following-error.html

http://www.fointelligence.com/Article/3335539/ISE-hopes-to-renew-litigation-against-CBOE.html

http://online.barrons.com/news/articles/SB50001424053111903843804579531373702399250?mod=googlenews_barrons

http://blogs.wsj.com/moneybeat/2014/04/29/options-market-expects-big-swings-in-twitter-stock-after-earnings/

http://www.futuresmag.com/2014/05/01/high-frequency-traders-fall-guys-or-felons#.U1–gLlX58U.twitter

http://www.bloomberg.com/news/2014-04-29/bogus-fund-fees-cited-by-sec-s-white-in-push-for-boosting-budget.html

http://www.tradersmagazine.com/news/buyside/citadel-lewis-book-tars-markets-that-are-better-than-ever-112404-1.html

http://www.forbes.com/sites/narrativescience/2014/04/29/cme-group-earnings-projected-to-increase/

http://blogs.wsj.com/moneybeat/2014/04/29/morning-moneybeat-volatile-markets-think-again/

http://blogs.wsj.com/moneybeat/2014/04/28/the-future-of-fx-trading-humans-babysitting-machines/