http://www.tradersmagazine.com/news/people/uk-trader-accused-of-manipulation-tied-to-2010-us-flash-crash-113746-1.html

http://www.cboeoptionshub.com/2015/04/21/3-7-trillion-in-a-u-m-tracks-eafe-and-e-m-indexes-as-first-ever-index-options-launch/

http://www.bizjournals.com/kansascity/news/2015/04/21/bats-fears-rule-would-create-unfair-competition-in.html

http://marketsmedia.com/parsing-best-ex-for-options-trades/?utm_content=bufferb1864&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

http://www.bloomberg.com/news/articles/2015-04-21/bats-to-offer-free-gold-trading-on-hotspot-currency-platform-i8qyow8a

http://www.nasdaq.com/article/court-reserves-judgment-in-former-goldman-sachs-programmer-case-20150420-01321

http://www.reuters.com/article/2015/04/20/exchange-fees-hearing-idUSL2N0XD22420150420?type=companyNews&feedType=RSS&feedName=companyNews

http://www.bloomberg.com/news/articles/2015-04-20/volcker-urges-merging-regulators-to-bolster-financial-oversight

http://www.livemint.com/Home-Page/rSdhe0nI7aPb0qEW23ivsI/Indias-VIX-heads-for-fifth-day-of-gains-as-stocks-extend-sl.htmlhttp://www.livemint.com/Home-Page/rSdhe0nI7aPb0qEW23ivsI/Indias-VIX-heads-for-fifth-day-of-gains-as-stocks-extend-sl.html

http://www.valuewalk.com/2015/04/hedge-funds-t-note/

http://www.chicagotribune.com/news/sns-wp-blm-news-bc-markets20-20150420-story.html#page=1

http://www.bloomberg.com/news/articles/2015-04-20/mom-and-pop-traders-went-on-a-buying-binge-during-friday-s-market-plunge