http://247wallst.com/2012/10/25/groupon-sees-very-unusual-options-trading/

http://ca.news.yahoo.com/analysis-apple-options-tail-wagging-dog-174556650–finance.html

http://online.barrons.com/article/SB50001424052748704377904578078692965450424.html?mod=BOL_options_home

http://investorplace.com/2012/10/your-best-post-pc-stock-isnt-aapl/

https://theoptionsinsider.com/unusualactivity/?p=100002588&qcABC=1

http://www.chicagotribune.com/business/breaking/chi-cme-group-q3-profit-falls-30-as-trading-sags-20121025,0,4116597.story

http://dealbook.nytimes.com/2012/10/24/rajat-gupta-gets-2-years-in-prison/

http://www.reuters.com/article/2012/10/25/cme-results-volume-idUSL1E8LP4A520121025?type=companyNews&feedType=RSS&feedName=companyNews&rpc=43

http://seekingalpha.com/article/949521-3-ex-dividend-options-trades-for-early-next-week?source=yahoo

http://dealbook.nytimes.com/2012/10/24/wall-street-leaders-peer-into-economic-gloom/

http://www.livetradingnews.com/options-trading-alert-wynn-resorts-nasdaqwynn-91166.htm#.UIk_R4ZXnNE

http://www.bloomberg.com/news/2012-10-25/options-trading-to-buy-and-sell-eu-carbon-at-8-euros-surges.html