http://www.bloomberg.com/news/articles/2016-04-27/nasdaq-100-futures-slide-with-apple-twitter-before-fed-meeting

http://seekingalpha.com/article/3968387-long-can-stock-indices-ignore-earnings-misses

http://www.tradersmagazine.com/news/ecns_and_exchanges/sec-draws-nyses-fury-with-idea-a-millisecond-doesnt-matter-115249-1.html

http://www.reuters.com/article/exchanges-sec-idUSL2N17T1SI

http://www.bloomberg.com/gadfly/articles/2016-04-27/hedge-fund-managers-who-needs-em

http://blogs.wsj.com/moneybeat/2016/04/26/options-traders-expect-big-move-in-twitter-shares-after-earnings/

http://www.bloomberg.com/news/articles/2016-04-27/indian-stock-futures-fall-after-sensex-jumps-to-four-month-high

http://www.forbes.com/sites/fredoltarsh/2016/04/26/about-30-million-stock-options-traded-today-and-mine-was-a-loser-why/#4955e8794831

http://tradinggods.net/trading-gods-blog/vix-daily-update-volatility-creeps-back-picture-ahead-fed/

http://www.reuters.com/article/us-apple-results-idUSKCN0XN22I

http://www.cboeoptionshub.com/2016/04/25/open-interest-vix-call-options-recently-topped-7-5-million-contracts/

http://tabbforum.com/opinions/stock-volatility-fuels-biggest-quarter-for-macro-options-in-4-years