i want to bring in ben carlson. about market breadth.the talk about all the time that are driving refuge share of the overall gains, but fuel is the preponderance of stocks, and most are going up. >> if you look at the big companies like amazon and apple and facebook, all are up 30% this year. they are huge stocks and have a huge weight in the s&p. a third of theor gains come as a people get worried about what it means, what if they fall back to earth? it is standard to see that. going tok data back 1994, looking at annual returns in the s&p 500. if you take the top 10 names in any given year, they account for 40% of the gain. it is normal to see this. so what something to look at that is more help all is market breadth, and it is an indicator when you look at the number of advancing stocks versus declining stocks to see the underlying index. here,e have two charts one of the late 90's market, the other today. so let's do it on the screen for a few moments. the basic idea, the late 90's, we see the advanced decliners peaked several years