Posts Tagged ‘on balance volume’

CAT Tool Plot and Update: Dollar Weighted OBV for ES

February 4, 2010

Here’s a plot of part of the day’s Dollar Weighted On Balance Volume superimposed over the price of the S&P E-mini (ES) futures. It only covers the part of the time my laptop was connected to the intertubes today, but I thought it was interesting. The Pink is the ES, the Blue is the DWOBV. There was a divergence around 10:30 AM that was followed by a big drop:

Also, I updated the dollar weighted CAT tool to record and plot the ES price (or whatever you put in your list as the first symbol), as well as added a capability to add a start time. That way you can click “Start” and it will wait to record until the time hits, or leave it blank and it will just start immediately. The update is in the “” file in “Released Tools“. In the future I plan to do a bit of a re-do of the tool to make it more generic, so keep your eyes peeled for that.

CAT Tool Updated

February 3, 2010

It was pointed out to me that the prior CAT tool is really making a plot of On Balance Volume. I called it Advance / Decline, but it’s not really doing that in the official sense of the term. Anyway, it was also pointed out to me that 5 million shares of a biotech bomb move this indicator just as much as 5 million shares of GOOG, which is right, of course. So I added another file in my CAT tool release, called “CAT_DollarWOVB.xls”. It’s a dollar-weighted On Balance Volume calculation. This way, the 5 million shares of biotech bomb at $1.20 isn’t as important as the 5 million shares of GOOG at $525.

Download the “” at “Released Tools” to get the update.