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

Health Care17.9%+1.29 ppInformation Technology17.9%+0.79 ppUtilities3.9%+0.52 ppMaterials2.5%+0.42 ppReal Estate3.8%+0.41 ppCommunication Services3.6%+0.24 ppConsumer Discretionary7.2%+0.13 ppConsumer Staples9.1%-0.01 ppEnergy4.4%-0.26 ppIndustrials13.8%-1.36 ppFinancials16.0%-2.17 pp

2 · Industry

Inside Health Care

Pharmaceuticals6.10%+0.50 ppBiotechnology2.70%-0.49 ppHealth Care Equipment3.38%+0.45 ppLife Sciences Tools & Services1.87%+0.34 ppHealth Care Services0.95%+0.32 ppManaged Health Care2.12%+0.22 ppHealth Care Distributors0.36%-0.11 ppHealth Care Facilities0.26%+0.05 ppHealth Care Supplies0.15%+0.01 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.70%-0.495 pp
Concentrated

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

View all contributions →
Biotechnology · weight
2.70%
Industry change · 12M
-0.49 pp
Biotechnology · contribution
-0.495 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$118.9bn0.683%+0.187 pp-0.239 pp-11.1%Yes
Gilead Sciences →
GILD
United States$82.9bn0.476%+0.187 pp-0.130 pp-10.8%Yes
Biogen →
BIIB
United States$46.5bn0.267%+0.050 pp-0.088 pp-13.7%Yes
Amgen →
AMGN
United States$118.2bn0.679%+0.236 pp-0.075 pp+14.7%Yes
Regeneron Pharmaceuticals →
REGN
United States$38.6bn0.222%+0.096 pp+0.023 pp+19.2%Yes
Vertex Pharmaceuticals →
VRTX
United States$47.0bn0.270%+0.119 pp+0.016 pp+12.9%Yes
Incyte →
INCY
United States$18.4bn0.106%+0.057 pp-0.002 pp+3.2%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.