http://tradinggods.net/trading-gods-blog/vix-daily-update-volatility-returns-investors-enter-risk-off-mode/

http://www.afr.com/markets/equity-markets/us-stocks-slip-ahead-of-earnings-fed-meeting-20160425-goesqm

http://www.tradersmagazine.com/news/options/cboe-futures-exchange-adds-connectivity-with-stellar-trading-systems-115242-1.html

http://leaprate.com/2016/04/moscow-exchange-experiences-derivatives-trading-interruption-2/

http://www.cabot.net/editors/jacob-mintz/analysts-center/options-market-update-4-25-16

http://www.marketwatch.com/story/obamas-brexit-comments-spark-sharp-rise-in-pro-eu-betting-2016-04-25?siteid=yhoof2

http://www.hellenicshippingnews.com/as-market-braces-for-mexico-hedging-u-s-oil-options-volatility-surges/

http://www.bloomberg.com/gadfly/articles/2016-04-25/counterbid-for-lse-is-a-challenge-ice-can-t-avoid

http://www.barrons.com/articles/betting-on-chipotle-options-1461387014

http://tradinggods.net/trading-gods-blog/vix-daily-update-xiv-advances-5-week-volatility-recedes/

http://www.bloomberg.com/news/articles/2016-04-23/carry-trade-gains-traction-as-currency-volatility-turns-lower

http://www.bloomberg.com/news/articles/2016-04-25/traders-may-just-be-forced-to-unwind-all-those-vix-bets-chart?cmpid=yhoo.headline