http://www.bloomberg.com/news/articles/2016-01-13/momentum-darlings-hit-wall-in-s-p-500-as-hedge-fund-stocks-slide

http://www.marketwatch.com/story/goldman-plans-to-cut-up-to-10-of-fixed-income-traders-salespeople-2016-01-13-18103258

http://www.theglobeandmail.com/globe-investor/fresh-stock-slump-extends-historically-bad-start-to-2016/article28160423/

http://www.reuters.com/article/usa-options-energy-idUSL2N14X2FW20160113

http://www.bloomberg.com/news/articles/2016-01-13/u-s-index-futures-signal-three-day-relief-as-china-angst-eases

http://www.cboeoptionshub.com/2016/01/12/19327/

http://finance.yahoo.com/news/us-stocks-indexes-set-open-140253518.html

http://www.bloomberg.com/news/articles/2016-01-12/commodity-rout-spreading-pain-beyond-energy-companies-citi-says

http://www.irishexaminer.com/business/china-stock-trading-to-stay-messy-says-hedge-fund-375902.html

http://www.marketwatch.com/story/dow-futures-up-triple-digits-as-market-eyes-third-day-of-gains-2016-01-13?siteid=yhoof2

http://news.investors.com/investing-options/011216-789439-china-options-volatile.htm

http://www.wsj.com/articles/investors-in-market-volatility-enjoy-wild-ride-1452616426