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 Technology27.2%+8.81 ppConsumer Discretionary7.5%+0.48 ppMaterials3.1%-0.14 ppCommunication Services5.1%-0.22 ppReal Estate2.9%-0.60 ppUtilities2.9%-0.78 ppHealth Care16.1%-0.85 ppConsumer Staples7.8%-0.86 ppIndustrials12.1%-1.12 ppEnergy1.9%-1.68 ppFinancials13.4%-3.05 pp

2 · Industry

Inside Health Care

Pharmaceuticals4.84%-0.57 ppBiotechnology2.27%-0.29 ppLife Sciences Tools & Services1.98%+0.19 ppHealth Care Services0.85%-0.18 ppHealth Care Supplies0.27%+0.15 ppManaged Health Care2.03%-0.08 ppHealth Care Distributors0.30%-0.03 ppHealth Care Facilities0.23%-0.02 ppHealth Care Equipment3.34%-0.01 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.27%-0.288 pp
Concentrated

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

View all contributions →
Biotechnology · weight
2.27%
Industry change · 12M
-0.29 pp
Biotechnology · contribution
-0.288 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Amgen →
AMGN
United States$133.9bn0.542%+0.541 pp-0.161 pp-2.0%Yes
AbbVie →
ABBV
United States$189.2bn0.766%+0.765 pp+0.123 pp+27.7%Yes
Biogen →
BIIB
United States$37.7bn0.153%+0.152 pp-0.110 pp-17.5%Yes
Gilead Sciences →
GILD
United States$73.0bn0.296%+0.295 pp-0.108 pp-6.7%Yes
Vertex Pharmaceuticals →
VRTX
United States$61.5bn0.249%+0.248 pp-0.027 pp+7.9%Yes
Incyte →
INCY
United States$19.0bn0.077%+0.077 pp-0.015 pp-0.4%Yes
Regeneron Pharmaceuticals →
REGN
United States$45.4bn0.184%+0.183 pp+0.011 pp+28.7%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.