In other words , the days when a chief executive like Citigroup 's Sanford I. Weill could pick up the phone to lobby Jack Grubman , the firm 's telecommunications analyst , to change his rating on AT&T may be over .
Citigroup
Sanford I. Weill
/business/company/advisors
ORGANIZATION
Citigroup
PERSON
Sanford I. Weill
ORGANIZATION
AT&T