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Pastimes : Ask da_cheif -- Ignore unavailable to you. Want to Upgrade?

To: memoff who wrote (1979)	5/24/2001 8:31:43 AM
From: peter n matzke	Read Replies (2) \| Respond to of 8150

OBV is a running sum of volume. If a given period is up the volume is added to the sum If a given period is down the volume is subtracted from the sum. You already have volume totals for the DJIA, so another column could be added to the spreadsheet adding for up days and subtracting for down days. OBV since it is a running sum can have widely different values depending on start date. For curiosity i just checked a couple data sources which verified this to be true. Also the time period selected for the OBV will provide vastly different results. OBV for 60 min data looks nothing like OBV for daily data

To: memoff who wrote (1979)	5/24/2001 5:41:56 PM
From: dospesos	Respond to of 8150

i know someone who has kept it for years. might be able to pry it loose...LOL

To: memoff who wrote (1979)	5/24/2001 10:22:51 PM
From: da_cheif™	Read Replies (1) \| Respond to of 8150

find back data for da pump...just get the past couple years of barrons...and every week in the statistics section there is the prior 5 day diary of the daily big board up and down volume.....if there is more up than down volume you add just the positive difference to a cumulative line....and if more down vol than up the net diference is subtracted from the cumulative line....dats da pump....and since the bulk of the big board volume comes from the 30 issues of the dj average you dont have to do intraday clxs to get a feel....just look at the difference of the up and down big board volume....