Off-sheet accounting

For mid-week entertainment, this full-page ad appeared in the Wall Street Journal recently:

The vertical axis says "% NYSE of All Market Share Volume".  The time-line is from July 05 to beyond July 08.  The text in the black box is "Matched Market Share: July 11, 2008".

When it's so obvious, it's probably not obvious.  The big story is off the chart: what happened to the other 50% of the volume over the years?

Faced with this, one reaches for the pie chart (... almost).

Small add (8/21/2008):

Comments

[Jon Peltier]

How relevant is share volume compared to price volume (sales in $ vs sales in units)?

[ZBicyclist]

Pie chart?? Don't even joke!

I couldn't find / couldn't be motivated to find out where the other 50% is in NYSE stocks, but this link

http://www.nasdaqtrader.com/Trader.aspx?id=MarketShare

shows the share of ETF volume (exchange traded funds)

NASDAQ 38%
NYSE Arca 28%
FINRA/NASDAQ TRF 14%
Other regionals and TRF 21%

[Michael]

After I quit my job from a big4 firm I was pretty worried that I wouldn’t find another one, that’s until a friend recommended me this website : http://www.big4.com/home.html .Here I found myself a job and I feel I could do a favor to everyone who is now in my former situation.