http://www.businessweek.com/news/2014-05-16/selloff-spreads-to-s-and-p-500-as-stocks-fall-most-in-month-options

http://www.reuters.com/article/2014/05/15/schwab-ceo-proposal-idUSL1N0O12EC20140515?type=companyNews&feedType=RSS&feedName=companyNews

http://blogs.barrons.com/focusonfunds/2014/05/15/russell-2000-bounces-out-of-correction-territory/

http://www.chicagotribune.com/business/sns-rt-us-banks-commodities-derivatives-analysis-20140515,0,6447716.story

http://blogs.marketwatch.com/thetell/2014/05/15/low-stock-volatility-here-to-stay-for-a-while-goldman-sachs/

http://www.forbes.com/sites/kitconews/2014/05/15/complacency-on-rise-as-volatility-falls-in-many-markets-time-to-be-worried/

http://www.cboeoptionshub.com/2014/05/15/anticipaion-india-vix-futures-market/

http://blogs.wsj.com/moneybeat/2014/05/15/morning-moneybeat-the-death-of-volatility/

http://www.bloomberg.com/news/2014-05-14/-flash-boys-rankles-fewer-europeans-in-trading-survey.html

http://www.tradersmagazine.com/news/etfs/study-shows-etf-usage-on-the-rise-greenwich-study-112455-1.html

http://blogs.wsj.com/moneybeat/2014/05/14/hedge-fund-heavy-bets-on-more-volatility-ahead/

http://www.bloomberg.com/news/2014-05-14/exchanges-to-get-tick-size-pilot-within-weeks-sec-official-says.html