http://www.institutionalinvestor.com/blogarticle/3428841/a-year-after-flash-boys-high-frequency-trading-lives-on.html#.VOYmLi7VnnY

http://www.tradersmagazine.com/news/options/listed-options-volume-near-unchanged-at-353-million-contracts-in-january-113483-1.html

http://www.reuters.com/article/2015/02/18/us-arbitration-interactive-auto-liquidat-idUSKBN0LM23620150218

http://www.wsj.com/articles/virtu-financial-llc-restarting-ipo-process-1424300748

http://www.bloomberg.com/news/articles/2015-02-19/at-t-s-predicament-rattles-investors-as-fcc-vote-looms-options

http://www.reuters.com/article/2015/02/19/us-markets-stocks-idUSKBN0LN11K20150219

http://www.marketwatch.com/story/a-pair-of-indicators-are-flashing-a-warning-for-stocks-2015-02-18

http://www.marketwatch.com/story/physicist-says-it-is-possible-to-use-ships-to-facilitate-high-frequency-trading-2015-02-18?siteid=yhoof2

http://www.thetradenews.com/news/Regions/Asia/Stock_options_arrival_signals_new_asset_class_for_Shanghai.aspx

http://seekingalpha.com/article/2922856-cboe-delivered-record-volumes-on-index-option-growth-in-q4

http://www.tradersmagazine.com/news/clearing/whats-causing-the-delays-in-new-otc-derivatives-rules-113478-1.html

http://online.barrons.com/news/articles/SB51367578116875004693704580468433308087618