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 Technology18.5%+1.48 ppMaterials2.6%+0.47 ppConsumer Staples9.0%+0.44 ppUtilities3.8%+0.36 ppReal Estate3.7%+0.31 ppCommunication Services3.5%+0.30 ppConsumer Discretionary7.3%+0.14 ppHealth Care16.9%+0.03 ppEnergy4.1%-0.93 ppIndustrials13.9%-1.13 ppFinancials16.8%-1.46 pp

2 · Industry

Inside Health Care

Biotechnology2.50%-0.59 ppLife Sciences Tools & Services1.81%+0.27 ppHealth Care Services0.93%+0.25 ppHealth Care Equipment3.19%+0.21 ppHealth Care Distributors0.35%-0.15 ppManaged Health Care1.93%-0.15 ppPharmaceuticals5.74%+0.14 ppHealth Care Facilities0.24%+0.04 ppHealth Care Supplies0.16%+0.02 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.50%-0.587 pp
Concentrated

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

View all contributions →
Biotechnology · weight
2.50%
Industry change · 12M
-0.59 pp
Biotechnology · contribution
-0.587 pp
Company participation
86%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$117.1bn0.652%+0.254 pp-0.290 pp-13.9%Yes
Gilead Sciences →
GILD
United States$83.0bn0.462%+0.164 pp-0.119 pp-6.9%Yes
Biogen →
BIIB
United States$44.4bn0.248%+0.026 pp-0.107 pp-16.2%No
Amgen →
AMGN
United States$111.6bn0.622%+0.229 pp-0.088 pp+5.8%Yes
Incyte →
INCY
United States$16.5bn0.092%+0.035 pp+0.011 pp+24.0%Yes
Regeneron Pharmaceuticals →
REGN
United States$32.2bn0.180%+0.047 pp+0.004 pp+13.0%Yes
Vertex Pharmaceuticals →
VRTX
United States$43.2bn0.241%+0.080 pp+0.001 pp+10.3%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.