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st: Add new observations.
From 
 
André Gyllenram <[email protected]> 
To 
 
<[email protected]> 
Subject 
 
st: Add new observations. 
Date 
 
Mon, 24 Sep 2012 12:13:06 +0200 
Hello,
I have information on all stocks that a number of individuals owns in a given time-period. A small part of the data looks like this:
Individual	date	stock	portfolioweight
3	        2000	1	.1
3	        2000	4	.2
3	        2000	9	.3
3	        2000	10	.4
4	        2000	1	.1
4	        2000	2	.1
4	        2000	3	.1
4	        2000	4	.2
4	        2000	5	.1
4	        2000	6	.1
4	        2000	7	.1
4	        2000	8	.2
5	        2000	3	1