http://www.cboe.com/blogs/options-hub/2017/07/28/cboe-morning-call-7-28-17

http://investorplace.com/2017/07/profit-taking-tech-pushes-nasdaq-record-heights/#.WXs0_-mQxPY

http://seekingalpha.com/article/4091750-sentiment-speaks-xiv-starting-crack-vix-ends-streak

http://cyceon.com/2017/07/28/amazons-main-risk-is-getting-too-big-to-grow/

http://www.investing.com/analysis/s-p-500-futures:-the-fed-keeps-rates-unchanged—new-vix-low-at-8.84,-an-200204104

http://www.bloomberg.com/news/articles/2017-07-26/dollar-drops-bonds-climb-on-fed-s-inflation-view-markets-wrap

http://www.reuters.com/article/us-funds-doubleline-idUSKBN1AC32C?il=0

http://tradinggods.net/trading-gods-blog/us-stocks-decline-tech-sector-volatility/

http://www.insidefutures.com/article/2012692/The%20BITCOIN%20Effect:%20Gold%20Options%20Look%20Dirt%20Cheap.html

http://www.cnbc.com/2017/07/27/jpmorgan-quant-drops-the-whole-market-with-report-comparing-to-1987.html?__source=yahoo%7Cfinance%7Cheadline%7Cheadline%7Cstory&par=yahoo&doc=104614996&yptr=yahoo