http://ww2.cfo.com/capital-markets/2015/05/100m-option-trades-timing-everything/

http://www.bloomberg.com/news/articles/2015-05-12/bond-volatility-surges-most-since-october-s-treasury-flash-crash

http://www.cboeoptionshub.com/2015/05/11/will-the-nasdaq-russell-2k-drag-the-spx-back-down-weekly-market-outlook/

http://www.marketwatch.com/story/how-to-hedge-with-married-puts-2015-05-11

http://www.cnbc.com/id/102670489

http://www.bloomberg.com/news/articles/2015-05-11/vix-trades-flood-market-as-99-million-changes-hands-in-a-second?cmpid=yhoo

http://www.interactivebrokers.com/en/?f=5599&vid=6137&ns=T

http://www.bloomberg.com/news/articles/2015-05-11/u-s-index-futures-are-little-changed-with-s-p-500-near-record

http://www.reuters.com/article/2015/05/11/china-markets-stocks-futures-idUSL3N0Y22LQ20150511?type=companyNews&feedType=RSS&feedName=companyNews

http://www.tradersmagazine.com/news/options/april-us-options-volume-at-3276m-down-from-march-as-spreads-tighten-113839-1.html

http://www.thetradenews.com/news/Trading___Execution/Industry_issues/US_unveils_details_of_two-year_tick_size_scheme.aspx

http://www.marketwatch.com/story/us-stocks-futures-dip-as-markets-struggle-to-build-on-post-jobs-gains-2015-05-11