http://www.bloomberg.com/news/articles/2015-08-19/treasuries-speed-trading-vaporizes-price-gap-with-futures-market

http://www.reuters.com/article/2015/08/19/cme-clearing-guaranty-idUSL1N10U2G820150819

http://www.bloomberg.com/news/articles/2015-08-19/rocky-road-for-rand-seen-as-options-predict-wider-price-swings

http://www.reuters.com/article/2015/08/19/uk-g20-derivatives-regulations-idUKKCN0QO1L020150819

http://www.bloomberg.com/news/articles/2015-08-20/bulls-walk-away-from-u-s-options-market-as-put-call-ratio-jumps

http://www.cboeoptionshub.com/2015/08/19/unusual-option-pricing-in-shak-explained/

http://www.wsj.com/articles/bank-of-ny-mellon-to-pay-14-8-million-to-settle-fcpa-probe-1439915579

http://www.startribune.com/irs-investigating-minnesota-options-trader-investment-coach/322306041/

http://www.chicagotribune.com/news/sns-wp-blm-news-bc-bitcoin18-20150818-story.html

http://www.myiris.com/news/market/india-vix-shows-rise-in-market-volatility/20150819122627199

http://www.nytimes.com/2015/08/19/business/dealbook/after-stock-and-currency-upheaval-china-puzzles-investors.html?_r=0

http://www.bloomberg.com/news/articles/2015-08-19/pimco-clashes-with-options-in-seeing-sept-fed-move-underpriced