http://www.suntimes.com/26971198-761/feds-create-new-chicago-teams-targeting-cybercrime-securities-fraud.html#.U1a0QVdAKdt

http://www.tradersmagazine.com/news/buyside/hfts-rough-couple-of-weeks-are-regulations-next-112386-1.html

http://online.wsj.com/article/BT-CO-20140422-708553.html

http://www.futuresmag.com/2014/04/22/options-play-netflix-implied-volatility-is-loud#.U1aKP9pDAdU.twitter

http://www.thetradenews.com/USA_news/Trading_Venues/Caution_urged_in_maker-taker_pilot.aspx

http://www.bloombergview.com/articles/2014-04-21/lawyers-sue-stock-market-for-being-rigged

http://www.foxbusiness.com/markets/2014/04/21/trade-volatility/

http://www.ft.com/intl/cms/s/0/b3ab6294-c57c-11e3-97e4-00144feabdc0.html?siteedition=intl#axzz2zcSFkTNH

http://marketsmedia.com/fragmentation-vexes-options-market/

http://www.elliottwave.com/freeupdates/archives/2014/04/21/Hedge-Funds-Wounded-in–Diabolical–Stock-Market.aspx#axzz2zcOuj472

http://www.businessweek.com/news/2014-04-22/bears-tightening-grip-on-facebook-after-buyout-binge-options

http://www.cboeoptionshub.com/2014/04/21/listening/