B |
1997-02-10 00:00:00.0 |
BIOGEN INC |
BGEN |
AMERICAN CENTURY COMPANIES INC |
12.0% |
view |
B |
1996-02-12 00:00:00.0 |
BIOGEN INC |
BGEN |
TWENTIETH CENTURY COMPANIES INC |
7.6% |
view |
S |
1995-02-10 00:00:00.0 |
BIOGEN INC |
BGEN |
FORSTMANN LEFF ASSOCIATES INC |
0.0% |
view |
S |
1995-01-31 00:00:00.0 |
BIOGEN INC |
BGEN |
PRUDENTIAL INSURANCE CO OF AMERICA |
n/a |
view |
B |
1994-02-11 00:00:00.0 |
BIOGEN INC |
BGEN |
TWENTIETH CENTURY COMPANIES INC |
1.1% |
view |
B |
1994-02-11 00:00:00.0 |
BIOGEN INC |
BGEN |
FORSTMANN LEFF ASSOCIATES INC |
8.2% |
view |
B |
1994-02-08 00:00:00.0 |
BIOGEN INC |
BGEN |
PRUDENTIAL INSURANCE CO OF AMERICA |
5.5% |
view |