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http://www.politico.com/story/2013/04/high-speed-trading-fans-wall-street-89552.html?hp=l16

http://www.tradersmagazine.com/news/nyse-withdraws-market-protections-over-own-objections-111061-1.html

http://blogs.wsj.com/marketbeat/2013/04/02/options-traders-position-for-health-care-pullback/

http://www.advancedtrading.com/regulations/spurred-by-bonuses-hedge-fund-traders-fe/240152137

http://www.bloomberg.com/news/2013-04-02/crude-oil-options-volatility-falls-or-first-time-in-three-days.html

http://www.fool.com/investing/general/2013/04/02/the-easy-road-to-dow.aspx

http://wallstreetsectorselector.com/2013/04/index-records-kick-vix-etfs/#

http://www.cnbc.com/id/100610552?__source=yahoo|headline|quote|text|&par=yahoo

http://www.bloomberg.com/news/2012-04-02/u-s-stock-options-with-biggest-changes-in-implied-volatility.html/

http://www.businessweek.com/news/2013-04-02/nasdaq-declines-most-since-2011-as-espeed-buy-raises-credit-risk

http://online.barrons.com/article/SB50001424052748703769504578398520837760886.html?mod=BOL_columnist_latest_col_art