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
2.39%
Industry change · 12M
+1.28 pp
Biotechnology · contribution
+1.280 pp
Company participation
63%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 2022 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$261.4bn0.907%+0.218 pp+0.526 pp+43.5%Yes
Moderna →
MRNA
United States$61.9bn0.215%-0.268 pp+0.215 pp-0.8%No
Amgen →
AMGN
United States$126.2bn0.438%+0.059 pp+0.178 pp+3.9%Yes
Regeneron Pharmaceuticals →
REGN
United States$58.1bn0.202%-0.001 pp+0.117 pp+37.2%Yes
Gilead Sciences →
GILD
United States$75.7bn0.263%-0.029 pp+0.109 pp+2.6%No
Vertex Pharmaceuticals →
VRTX
United States$58.6bn0.203%+0.043 pp+0.093 pp+8.2%Yes
Biogen →
BIIB
United States$31.0bn0.108%-0.009 pp+0.024 pp-22.7%No
Incyte →
INCY
United States$15.1bn0.052%+0.002 pp+0.018 pp-13.2%Yes

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.