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 Technology17.3%+1.25 ppHealth Care17.2%+0.52 ppEnergy5.0%+0.34 ppUtilities3.4%+0.20 ppReal Estate3.4%+0.18 ppMaterials2.0%-0.09 ppCommunication Services3.2%-0.22 ppConsumer Discretionary6.9%-0.22 ppConsumer Staples8.8%-0.59 ppFinancials17.8%-0.67 ppIndustrials14.9%-0.68 pp

2 · Industry

Inside Health Care

Health Care Equipment3.11%+0.29 ppPharmaceuticals5.77%+0.27 ppBiotechnology3.12%-0.26 ppManaged Health Care2.13%+0.18 ppLife Sciences Tools & Services1.64%+0.12 ppHealth Care Distributors0.40%-0.11 ppHealth Care Services0.63%-0.07 ppHealth Care Facilities0.25%+0.05 ppHealth Care Supplies0.19%+0.05 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology3.12%-0.258 pp
Concentrated

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

View all contributions →
Biotechnology · weight
3.12%
Industry change · 12M
-0.26 pp
Biotechnology · contribution
-0.258 pp
Company participation
57%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$146.4bn0.854%-0.088 pp-0.168 pp-16.1%No
Gilead Sciences →
GILD
United States$101.2bn0.590%+0.009 pp-0.034 pp-5.7%Yes
Amgen →
AMGN
United States$127.2bn0.742%+0.033 pp-0.028 pp+7.3%No
Biogen →
BIIB
United States$67.4bn0.393%+0.038 pp-0.027 pp-3.9%Yes
Incyte →
INCY
United States$14.1bn0.083%+0.002 pp-0.026 pp-26.3%No
Vertex Pharmaceuticals →
VRTX
United States$44.7bn0.261%+0.021 pp+0.020 pp+4.9%Yes
Regeneron Pharmaceuticals →
REGN
United States$34.6bn0.202%+0.026 pp+0.005 pp+0.4%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.