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
1.11%
Industry change · 12M
+1.10 pp
Biotechnology · contribution
+1.105 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$190.3bn0.380%-0.404 pp+0.380 pp+32.4%No
Amgen →
AMGN
United States$129.9bn0.260%-0.289 pp+0.259 pp+15.8%No
Gilead Sciences →
GILD
United States$77.2bn0.154%-0.169 pp+0.154 pp-7.9%No
Vertex Pharmaceuticals →
VRTX
United States$55.3bn0.110%-0.141 pp+0.110 pp-5.1%No
Regeneron Pharmaceuticals →
REGN
United States$42.3bn0.085%-0.121 pp+0.084 pp+1.3%No
Biogen →
BIIB
United States$41.6bn0.083%-0.074 pp+0.083 pp-11.5%No
Incyte →
INCY
United States$17.3bn0.035%-0.044 pp+0.034 pp+4.3%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.