http://www.streetinsider.com/Options/Apple+%28AAPL%29+September+weekly+implied+volatility+increases+as+shares+sell+off+2%25/13313695.html

http://www.reuters.com/article/us-usa-fed/fed-keeps-rates-steady-to-start-portfolio-drawdown-in-october-idUSKCN1BV0GJ

http://www.bloomberg.com/news/articles/2017-09-20/u-s-federal-open-market-committee-sept-20-statement-text

http://af.reuters.com/article/commoditiesNews/idAFL5N1M12W2

http://www.chicagobusiness.com/article/20170919/NEWS01/170919872/chicago-board-of-trade-leaders-wilmouth-rosenthal-have-died

http://www.scmp.com/news/china/economy/article/2111892/central-bank-official-says-china-keen-promote-use-yuan-commodity

http://allstocknews.com/2017/09/20/why-cme-group-inc-nasdaqcme-is-a-stock-to-set-your-sights-on/

http://www.cnbc.com/2017/09/20/futures-point-to-mixed-open-on-wall-street-ahead-of-federal-reserve-announcement.html

http://www.reuters.com/article/us-apple-iphone-china-analysis/as-apple-slows-fast-moving-chinese-rivals-gain-in-wealthy-markets-idUSKCN1BV1GR

http://www.bloomberg.com/news/articles/2017-09-19/oil-advances-on-signs-u-s-stockpile-gains-eased-after-harvey

http://www.cnbc.com/2017/09/20/us-treasurys-higher-as-investors-await-federal-reserve-rate-decision.html