http://www.bloomberg.com/news/articles/2015-10-19/chicago-trader-oystacher-accused-of-spoofing-in-futures-markets

http://finance.yahoo.com/news/wall-street-edge-china-data-092550735.html

http://www.cboeoptionshub.com/2015/10/17/the-week-in-vix-1012-1016/

http://investorplace.com/2015/10/option-profits-determined/#

http://www.bloomberg.com/news/articles/2015-10-19/indian-options-get-boost-as-stakes-increase-in-derivatives-trade

http://www.bloomberg.com/news/articles/2015-10-19/u-s-index-futures-erase-drop-with-equities-at-eight-week-high

http://www.reuters.com/article/2015/10/16/us-walmart-options-idUSKCN0SA2DL20151016

http://www.tradersmagazine.com/news/options/us-september-options-volume-slumps-17-in-september-to-3548m-114544-1.html

http://www.mondovisione.com/media-and-resources/news/moscow-exchange-cause-of-derivatives-market-outage/

http://www.bloomberg.com/news/articles/2015-10-16/brace-yourself-hfts-join-call-for-transparency-in-treasuries

http://www.bloomberg.com/news/articles/2015-10-16/india-s-vix-heads-for-longest-stretch-of-weekly-losses-this-year

http://www.fool.com/investing/general/2015/10/15/the-vix-index-the-stock-markets-crystal-ball.aspx