The Charlotte, NC-based company also has its own brokerage house. “We offer trading at $3.50 per trade when the market rate is $10,” Raju says. “The reason why we can do it at a lower price is because we don’t spend money writing front end tools. We are bringing the transaction engine.” The company went live in November and was in a private beta for the previous five months. So far, eight-to-ten big companies are looking to connect with Tradier and Raju says “tons” of developers are already building apps. “We already have two companies that got funded and launched and we are the entire reason they got launched,” he says. What Braintree did for payments is exactly what Tradier is trying to do for retail trading. “This whole paradigm of having the large firms charge a lot of money has to fundamentally change,” says Raju.

http://techcrunch.com/2014/04/24/building-a-software-toolkit-for-financial-services-nets-tradier-3-1-million/