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 Technology39.9%+2.38 ppEnergy2.7%+0.38 ppHealth Care10.6%+0.37 ppMaterials2.0%-0.11 ppIndustrials9.9%-0.12 ppReal Estate2.1%-0.17 ppCommunication Services2.2%-0.23 ppUtilities2.5%-0.34 ppConsumer Discretionary11.3%-0.38 ppConsumer Staples5.9%-0.60 ppFinancials10.9%-1.19 pp

2 · Industry

Inside Health Care

Health Care Equipment1.61%-0.77 ppPharmaceuticals4.10%+0.75 ppManaged Health Care0.93%+0.23 ppBiotechnology1.89%+0.10 ppHealth Care Technology0.08%+0.06 ppHealth Care Services0.48%+0.05 ppLife Sciences Tools & Services0.90%-0.03 ppHealth Care Facilities0.16%-0.02 ppHealth Care Supplies0.09%+0.00 ppHealth Care Distributors0.40%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology1.89%+0.104 pp
Concentrated

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

View all contributions →
Biotechnology · weight
1.89%
Industry change · 12M
+0.10 pp
Biotechnology · contribution
+0.104 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2026 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AbbVie →
ABBV
United States$443.4bn0.774%+0.267 pp+0.070 pp+36.9%Yes
Vertex Pharmaceuticals →
VRTX
United States$121.1bn0.211%+0.064 pp-0.036 pp+4.4%Yes
Amgen →
AMGN
United States$207.9bn0.363%+0.110 pp+0.028 pp+34.4%Yes
Regeneron Pharmaceuticals →
REGN
United States$71.7bn0.125%+0.035 pp+0.017 pp+40.6%Yes
Moderna →
MRNA
United States$21.9bn0.038%+0.014 pp+0.014 pp+85.5%Yes
Biogen →
BIIB
United States$30.0bn0.052%+0.014 pp+0.013 pp+58.6%Yes
Gilead Sciences →
GILD
United States$161.7bn0.282%+0.062 pp-0.012 pp+19.0%Yes
Incyte →
INCY
United States$23.9bn0.042%+0.016 pp+0.011 pp+59.6%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.