joined now by brett redfern director of trading and markets for the s.e.c. he has been monitoring all of the trading volumes to make sure the system is running smoothly thank you for joining us how is the u.s. system holding up what's the verdict >> we have seen extraordinary market activity. you mentioned the high volume we saw friday i think one thing we look at closely is methods traffic we have seen that in some cases dully doubling i will tell you our markets have held up very well. they have been orderly they are functioning very well we have seen very few technical glitches, few system glitches. our systems are ibt anding resilientsy and integrity. >> in the past we have had systems come down. is thering in new the s.e.c. or the he can changes are doing to have more robust connectivity, less issues? >> that's a good question. we all remember time in the past when we saw more out ans and glitches and thing like that happening. et cetera impressive that we are not seeing that right now. i think the he can changes have made a significant amount of invest