For the longest time, I really want to understand this:
When Marketwatch, CNBC
http://data.cnbc.com/quotes/.NCOMP
listed Nasdaq vol. as 792.485M (Sep. 2), they seems to mean today's vol.
Well then, what's the vol. listed at Yahoo finance?
http://finance.yahoo.com/q/hp?s=^IXIC
2,010,580,000 <--where is this number come from?
What is even more confusing is Dow Vol.
http://finance.yahoo.com/q/hp?s=^DJI
4,783,560,000 <--what exactly is this volume compose of?
And what is the most reliable, big web site to get NYSE (Big board)'s volume?
Today's vol. at NYSE is 1.1 Billion
When Marketwatch, CNBC
http://data.cnbc.com/quotes/.NCOMP
listed Nasdaq vol. as 792.485M (Sep. 2), they seems to mean today's vol.
Well then, what's the vol. listed at Yahoo finance?
http://finance.yahoo.com/q/hp?s=^IXIC
2,010,580,000 <--where is this number come from?
What is even more confusing is Dow Vol.
http://finance.yahoo.com/q/hp?s=^DJI
4,783,560,000 <--what exactly is this volume compose of?
And what is the most reliable, big web site to get NYSE (Big board)'s volume?
Today's vol. at NYSE is 1.1 Billion