http://www.bloomberg.com/news/articles/2016-04-22/u-s-index-futures-little-changed-as-microsoft-alphabet-fall

http://finance.yahoo.com/news/sec-extends-test-period-curb-211539554.html;_ylt=A0LEVjhEHxpXBR8A9pYnnIlQ;_ylu=X3oDMTEzdHV2ZmlzBGNvbG8DYmYxBHBvcwMxBHZ0aWQDRkZSVkJLXzEEc2VjA3Nj

http://www.bloomberg.com/news/articles/2016-04-21/spoofing-cases-from-oystacher-s-past-prove-intent-cftc-says

http://cdn.batstrading.com/resources/press_releases/Bats-March-Volume-PR-FINAL.pdf

http://www.bloomberg.com/news/articles/2016-04-21/some-hedge-funds-buck-trend-spurning-cash-while-industry-bleeds

http://www.globalresearch.ca/u-s-government-is-now-a-major-counterparty-to-wall-street-derivatives/5521219

http://www.bloomberg.com/news/articles/2016-04-22/record-vix-bets-keep-surging-as-wall-street-divines-mixed-signal

http://tradinggods.net/trading-gods-blog/vix-daily-update-vxx-edges-higher-equity-rally-brakes/

http://www.business-standard.com/article/companies/cme-group-eyes-15-stake-in-mcx-116042100963_1.html

http://tickertape.tdameritrade.com/options/2016/04/volatility-skew-vix-70978

http://www.newyorker.com/business/currency/why-the-s-e-c-didnt-hit-goldman-sachs-harder

http://seekingalpha.com/article/3966691-intels-options-cheap