http://www.investing.com/analysis/what-is-volatility-telling-us-about-the-market-right-now-200133194

http://www.cboeoptionshub.com/2016/05/31/bigtrends-com-weekly-market-outlook-key-remaining-hurdles/

http://www.bloomberg.com/news/articles/2016-05-30/boys-club-image-overturned-by-rise-of-women-currency-traders

http://www.cnbc.com/2016/05/31/june-is-the-worst-month-for-markets-strategist.html

http://www.bloomberg.com/news/articles/2016-05-31/one-minute-plunge-sends-chinese-stock-futures-down-by-10-limit

http://tradinggods.net/trading-gods-blog/vix-daily-update-3/

http://www.cabot.net/editors/jacob-mintz/analysts-center/options-market-update-5-31-16

http://www.investors.com/research/options/pound-drops-on-new-brexit-poll-options-indicate-volatility/

http://www.thetradenews.com/Asset-Classes/Derivatives/CME-clearing-house-approved-by-Singapore-regulators/

http://www.cboeoptionshub.com/2016/05/29/weekend-review-volatility-indexes-etps-523-527/

http://tradinggods.net/trading-gods-blog/sp-500-faces-die-moment/

http://uk.reuters.com/article/deutsche-boerse-lse-idUKL8N18S2EP