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
-2.36 pp
Biotechnology · contribution
-2.360 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Amgen →
AMGN
United States$148.4bn0.001%-0.000 pp-0.680 pp+24.8%No
AbbVie →
ABBV
United States$169.0bn0.001%+0.000 pp-0.528 pp+53.9%No
Gilead Sciences →
GILD
United States$83.7bn0.000%-0.000 pp-0.437 pp+9.0%No
Vertex Pharmaceuticals →
VRTX
United States$72.7bn0.000%-0.000 pp-0.251 pp+55.0%No
Biogen →
BIIB
United States$45.5bn0.000%-0.000 pp-0.220 pp+30.9%No
Regeneron Pharmaceuticals →
REGN
United States$58.2bn0.000%-0.000 pp-0.148 pp+113.7%No
Incyte →
INCY
United States$21.1bn0.000%-0.000 pp-0.096 pp+17.8%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.