Observatory · observe first

Follow the allocation change

Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.

Historical time machine
Historical observation
20182026
Universe›Health Care›Biotechnology›Biotechnology
Biotechnology · weight
0.00%
Industry change · 12M
-2.27 pp
Biotechnology · contribution
-2.270 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Amgen →
AMGN
United States$143.3bn0.001%-0.789 pp-0.595 pp+34.8%No
AbbVie →
ABBV
United States$140.2bn0.001%-0.680 pp-0.523 pp+50.5%No
Gilead Sciences →
GILD
United States$87.2bn0.000%-0.594 pp-0.443 pp+10.1%No
Biogen →
BIIB
United States$43.5bn0.000%-0.271 pp-0.233 pp+15.5%No
Vertex Pharmaceuticals →
VRTX
United States$70.8bn0.000%-0.364 pp-0.227 pp+63.2%No
Regeneron Pharmaceuticals →
REGN
United States$59.4bn0.000%-0.276 pp-0.152 pp+107.4%No
Incyte →
INCY
United States$21.5bn0.000%-0.118 pp-0.097 pp+16.3%No

Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.