Here's what I find for today's volume on Nasdaq: finance.yahoo.com -->1,564,802,000 marketwatch.com -->1,524,209,355 bigcharts.com -->1,524,089,723 What is the real volume?!?! What is the official source of that info?!? [ok this may seem a bit anal but I just don't understand why there must be any difference!]
wait, the volume just changed, looks like they are counting the after hours trades, so you'll have to find another source
Which brings us back to square one. Where is the real volume just normal trading hours) for Nasdaq and NYSE?
ok, another try ... Anyone know where to get the official number for end of day volume (as well as up/down volume) for Nasdaq and NYSE? Thanks in advance.