http://www.nasdaq.com/article/3-foolproof-solutions-for-options-mistakes-know-your-options-cm347101

http://www.bloomberg.com/news/2014-04-25/backbone-of-u-s-stock-trading-said-poised-for-upgrade.html

https://theoptionsinsider.com/tradingtechnology/?p=100034323&qcABC=1

http://uk.reuters.com/article/2014/04/24/nasdaq-omx-investigation-idUKL2N0NG10K20140424

http://www.investopedia.com/articles/active-trading/042414/what-makertaker-fees-mean-you.asp

http://www.marketwatch.com/story/schwab-fined-500000-for-finra-violations-2014-04-24?siteid=yhoof2

http://blogs.barrons.com/focusonfunds/2014/04/24/sec-plans-review-of-hedged-mutual-funds/?mod=BOLBlog

http://www.reuters.com/article/2014/04/24/markets-precious-idUSL3N0NG2M520140424

http://www.tradersmagazine.com/news/brokerage/flash-boys-resonates-as-survey-finds-high-frequency-concerns-112391-1.html

http://www.bloomberg.com/news/2014-04-23/bank-cutting-commodities-trade-severs-link-with-equities.html

http://www.ifre.com/derivatives-recordkeeping-woes-approach-buyside/21142628.article

http://www.tradersmagazine.com/news/regulation/buyside-clears-sef-regulatory-hurdles-112392-1.html