http://www.bloomberg.com/news/2013-05-07/12-banks-accused-in-lawsuit-of-restraining-swaps-market.html

http://boxexchange.com/assets/BOX-2013-Press-Release-Jumbo-SPY-May-20131.pdf

http://www.advancedtrading.com/infrastructure/countering-hft-exclusives-cme-nasdaq-lau/240154198

http://www.efinancialnews.com/story/2013-05-06/us-exchange-shares-ignited-by-ice-nyse-deal

http://finance.yahoo.com/news/3-years-later-learning-live-120200790.html

http://www.nytimes.com/2013/05/06/opinion/a-disappointing-debut-at-the-sec.html?_r=0

http://www.livetradingnews.com/increasing-stock-values-drive-options-trading-113086.htm#.UYe2P8rm-ds

http://investorplace.com/247trader/4-call-contenders-in-chemical-stocks/

http://seekingalpha.com/article/1404071-massive-volume-in-vix-fund-but-contango-persists?source=google_news

http://wallstreetsectorselector.com/2013/05/vix-sinks-on-friday/#

http://online.barrons.com/article/SB50001424052748703591404578453031263334260.html?mod=BOL_columnist_latest_col_art

http://online.wsj.com/article/SB10001424127887324582004578461141594690894.html?mod=wsj_streaming_stream