Just as an alternative
data Network;
input Cusip Analyst;
cards;
1 1
1 2
1 3
2 8
2 9
2 11
2 10
2 12
3 45
3 46
;
proc transpose data=Network out=wide prefix = a;
by Cusip;
id Analyst;
var Analyst;
run;
proc summary data = wide missing;
by Cusip;
class a:;
ways 2;
output out = temp / ways;
run;
data want(keep = Cusip var1 var2);
set temp;
if n(of a:) = 2;
var1 = largest(2, of a:);
var2 = largest(1, of a:);
run;
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