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

1 · Sector

Weight and 12M allocation change

Information Technology26.8%+8.71 ppMaterials3.2%-0.02 ppConsumer Discretionary6.8%-0.23 ppCommunication Services5.0%-0.29 ppHealth Care16.4%-0.39 ppReal Estate3.1%-0.54 ppConsumer Staples8.2%-0.62 ppUtilities3.0%-0.62 ppIndustrials12.5%-1.18 ppEnergy1.9%-1.53 ppFinancials13.2%-3.30 pp

2 · Industry

Inside Health Care

Pharmaceuticals4.86%-0.37 ppLife Sciences Tools & Services2.05%+0.28 ppBiotechnology2.35%-0.27 ppHealth Care Services0.89%-0.17 ppHealth Care Supplies0.27%+0.14 ppHealth Care Equipment3.36%+0.06 ppHealth Care Distributors0.32%-0.04 ppHealth Care Facilities0.22%-0.02 ppManaged Health Care2.06%+0.00 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.35%-0.272 pp
Concentrated

Most of this industry's losses came from a few companies.

View all contributions →
Biotechnology · weight
2.35%
Industry change · 12M
-0.27 pp
Biotechnology · contribution
-0.272 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Amgen →
AMGN
United States$129.3bn0.549%+0.548 pp-0.154 pp-2.8%Yes
AbbVie →
ABBV
United States$184.6bn0.784%+0.783 pp+0.131 pp+25.8%Yes
Biogen →
BIIB
United States$37.0bn0.157%+0.157 pp-0.116 pp-19.9%Yes
Gilead Sciences →
GILD
United States$76.1bn0.323%+0.323 pp-0.106 pp-6.3%Yes
Vertex Pharmaceuticals →
VRTX
United States$59.2bn0.252%+0.251 pp-0.036 pp+2.7%Yes
Regeneron Pharmaceuticals →
REGN
United States$48.5bn0.206%+0.206 pp+0.031 pp+39.8%Yes
Incyte →
INCY
United States$18.5bn0.079%+0.079 pp-0.024 pp-10.2%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.