The former trader started his own stock exchange, IEX, to address his concerns about high-frequency trading.
A 350-millisecond delay can help long-term investors get equal footing with high-frequency traders, argues IEX's CEO.
The firm is in talks to raise money to become a new financial exchange.
Competing algorithms could be the culprit. And a new study says they're on the rise.
High speed trading is behind this month's errors in financial markets.
