http://uk.finance.yahoo.com/news/stocks-news-europe-stoxx-50s-081204095.html

http://ca.finance.yahoo.com/news/cme-strengthen-footprint-uk-195936908.html

http://www.investingdaily.com/15580/downward-volatility-avoid-the-temptation-of-the-vix

http://www.dailymarkets.com/options/2012/08/23/monitoring-implied-volatility-is-critical-for-option-traders/

http://www.bloomberg.com/news/2012-08-22/knight-s-440-million-loss-spurs-questions-on-trade-cancel-rules.html

http://www.reuters.com/article/2012/08/22/us-hedgefunds-investors-idUSBRE87L04W20120822

http://www.businessweek.com/news/2012-08-22/october-oil-options-later-months-little-changed

http://www.tabbforum.com/news/trading-volume-at-5-year-low-dont-panic

http://www.bloomberg.com/news/2012-07-08/most-accurate-forecasters-see-euro-bottom-at-odds-with-options.html