http://www.reuters.com/article/2015/07/06/us-markets-options-semiconductors-idUSKCN0PG23B20150706

http://www.njbiz.com/article/20150706/NJBIZ01/150709906/options-exchange-names-former-goldman-sachs-exec-to-its-leadership-team

http://www.bloomberg.com/news/articles/2015-07-06/greece-seen-as-48-hours-from-unrest-as-hedge-funds-pull-back

http://www.reuters.com/article/2015/07/06/cme-group-futures-closure-end-idUSL1N0ZI2G620150706

http://www.reuters.com/article/2015/07/02/cme-landmark-seats-idUSL3N0ZH4QO20150702

http://www.bloomberg.com/news/articles/2015-07-05/surge-in-europe-stock-options-volume-shows-race-to-hedge-greece

http://chicago.suntimes.com/news/7/71/714342/chicagos-storied-trading-pits-vanish-in-digital-age

http://www.hedgeweek.com/2015/07/03/226211/cboe-and-c2-options-exchange-total-trading-volume-16-cent-june

http://www.dailymail.co.uk/news/article-3150578/Traders-recall-rush-roar-famed-pits-close-good.html

http://www.fool.com/investing/beginning/2015/07/02/will-the-cboe-vix-predict-next-stock-market-crash.aspx

http://www.bloomberg.com/news/articles/2015-07-05/china-brokers-dust-off-wall-street-s-playbook-from-crash-of-1929

http://blogs.barrons.com/focusonfunds/2015/07/02/backwardation-boosts-vix-etfs-but-for-how-long/?mod=google_news_blog