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Biogen

BIIB · United States · Biotechnology · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine
Historical observation
20182026
Universe weight
0.366%
12M weight contribution
-0.053 pp
3M weight contribution
-0.053 pp
12M price return
-16.9%

Share of matched S&P 500 members

Monthly observations through Feb 2018

0.40.40.42018

Company price index

A separate dimension from market allocation

8492992018

Historical observations

Most recent 24 observations at or before the selected month

MonthMarket capUniverse weight12M weight change12M returnAbove 6M weight average
Feb 2018$61.1bn0.366%-0.053 pp-16.9%No
Jan 2018$73.6bn0.420%+0.000 pp+0.0%No

Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.