http://marketsmedia.com/market-volatility-boosts-options-volume/

http://www.bloomberg.com/news/articles/2015-10-13/piling-into-ubs-bearish-options-yesterday-proved-well-timed-bet

http://www.nytimes.com/2015/10/14/business/dealbook/as-some-hedge-funds-sink-the-challenge-buoys-others.html?_r=0

http://www.investing.com/analysis/spy-put-call-ratio-moves-sideways-268026

http://www.bloomberg.com/news/articles/2015-10-14/active-managers-catch-break-as-u-s-stock-correlations-collapse

http://www.bloomberg.com/news/articles/2015-10-13/vix-charts-show-how-unsettled-the-u-s-stock-market-still-is

http://www.wsj.com/articles/moneybeat-markets-volatility-evaporates-1444767358

http://www.tradersmagazine.com/news/regulation/chinese-exchanges-plan-to-watch-hft-more-closely-114520-1.html

http://blogs.wsj.com/moneybeat/2015/10/13/october-fails-to-repair-damage-for-battered-hedge-funds/

http://www.bloomberg.com/news/articles/2015-10-13/u-s-futures-fall-on-weak-china-imports-before-jpmorgan-results

http://www.bloomberg.com/news/articles/2015-10-13/piling-into-ubs-bearish-options-yesterday-proved-well-timed-bet

http://www.reuters.com/article/2015/10/12/hedgefunds-stocks-favorites-idUSL1N12C17Z20151012