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
-2.40 pp
Biotechnology · contribution
-2.400 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Amgen →
AMGN
United States$138.7bn0.001%+0.000 pp-0.605 pp+31.6%No
AbbVie →
ABBV
United States$145.0bn0.001%+0.000 pp-0.579 pp+43.0%No
Gilead Sciences →
GILD
United States$96.5bn0.001%+0.000 pp-0.463 pp+18.1%No
Vertex Pharmaceuticals →
VRTX
United States$75.3bn0.000%+0.000 pp-0.253 pp+58.3%No
Biogen →
BIIB
United States$43.7bn0.000%-0.000 pp-0.244 pp+14.4%No
Regeneron Pharmaceuticals →
REGN
United States$58.6bn0.000%+0.000 pp-0.158 pp+99.2%No
Incyte →
INCY
United States$22.6bn0.000%+0.000 pp-0.098 pp+22.4%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.