http://finance.yahoo.com/news/us-stocks-futures-recover-drop-114259228.html

http://www.marketwatch.com/story/stock-market-set-to-slump-after-friday-jobs-report-disappoints-2017-04-07?siteid=yhoof2

http://www.reuters.com/article/us-usa-options-energy-idUSKBN1782UK

http://uk.reuters.com/article/uk-britain-eu-clearing-derivatives-idUKKBN1782CB

http://www.barrons.com/articles/vix-sends-warning-sign-to-the-stock-market-1491556006

http://www.prnewswire.com/news-releases/cboe-holdings-reports-march-2017-trading-volume-300436032.html

http://finance.yahoo.com/news/u-equity-options-project-calm-184351223.html

http://www.bloomberg.com/news/articles/2017-04-06/wall-street-doubts-trump-wants-to-split-up-biggest-u-s-banks

http://www.crainsnewyork.com/article/20170404/POLITICS/170409960

http://www.standard.co.uk/business/brexit-shouldn-t-affect-where-clearing-houses-are-top-us-watchdog-declares-a3508986.html

http://www.fxstreet.com/news/cme-group-fedwatch-market-expectations-for-a-june-rate-hike-at-627-201704051846

http://www.bloomberg.com/politics/articles/2017-04-04/sick-of-brexit-limbo-foreign-bankers-are-asking-to-be-sent-home