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st: corporate integration


From   "Chao Feng" <[email protected]>
To   [email protected]
Subject   st: corporate integration
Date   Tue, 26 Aug 2003 14:34:20 +0200

Dear Statalisters,
I have a Dataset containing corporate structures and want to find out about corporate integration, i.e. I want to mark those observations (i.e. firms) which mutually hold shares in their businesses.
The structure is as follows (toy example):

"parent firm"  "subsidiary company" "amount of holding"

1234                     5678                         25%
1234                     7788                        100%
1234                     8897                          70%
5678                     1234                          30%
5678                     3484                         100%
6666                     9099                          60%

records 1 and 4 (i.e. firms number 1234 and 5678 mutually hold shares and I trying to find a way to identify them with Stata but have not found a solution yet.

Any suggestion would be much appreciated,

Chao Feng
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