i spoke with the ceo of iex, brad katsuyama.se clients handle this. >> we talked investors all the time. iex is the investors exchange. amplified volatility concerns a lot of investors.a lot of fundamental investors start to see breakdowns in the way stocks are trading, some they view as an opportunity and others they get a little more concerned but certainly week like this, you like the fourth quarter of last year the same thing. it is people have a lot of questions and the stock exchange is an opportunity for us to talk to our core clients. maria: the fact is the market is up strongly since the bottom. most recent bottom in december. i guess you have some wiggle room here. to see some volatility after it's been a stellar first quarter. >> yet, the interesting part about volatility that in the market naturally will be volatile as news comes out and obviously the u.s. china news this week. what we look at is again, 50, 70 percent of the market ends up being high-speed trading automated trading strategies. look at reports from go