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 Technology37.5%+17.67 ppFinancials12.1%+3.93 ppConsumer Discretionary11.7%+3.50 ppIndustrials10.0%+2.95 ppConsumer Staples6.5%+1.39 ppUtilities2.8%+0.81 ppCommunication Services2.5%+0.68 ppReal Estate2.3%+0.39 ppEnergy2.3%+0.30 ppHealth Care10.3%+0.23 ppMaterials2.1%-31.86 pp

2 · Industry

Inside Health Care

Managed Health Care0.70%-0.62 ppHealth Care Equipment2.38%+0.59 ppLife Sciences Tools & Services0.93%-0.14 ppBiotechnology1.78%+0.14 ppPharmaceuticals3.35%+0.13 ppHealth Care Distributors0.40%+0.11 ppHealth Care Services0.42%+0.03 ppHealth Care Supplies0.09%-0.02 ppHealth Care Facilities0.18%+0.01 ppHealth Care Technology0.03%+0.01 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology1.78%+0.136 pp
Concentrated

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

View all contributions →
Biotechnology · weight
1.78%
Industry change · 12M
+0.14 pp
Biotechnology · contribution
+0.136 pp
Company participation
13%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2025 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Gilead Sciences →
GILD
United States$139.7bn0.295%-0.024 pp+0.125 pp+52.4%No
AbbVie →
ABBV
United States$333.9bn0.704%-0.123 pp+0.118 pp+5.6%No
Regeneron Pharmaceuticals →
REGN
United States$51.2bn0.108%-0.027 pp-0.074 pp-49.3%No
Moderna →
MRNA
United States$11.4bn0.024%-0.002 pp-0.058 pp-75.2%No
Vertex Pharmaceuticals →
VRTX
United States$117.3bn0.247%-0.067 pp+0.018 pp-7.8%No
Biogen →
BIIB
United States$18.8bn0.040%-0.003 pp-0.016 pp-40.0%No
Amgen →
AMGN
United States$158.7bn0.335%-0.041 pp+0.015 pp-8.4%No
Incyte →
INCY
United States$14.6bn0.031%+0.002 pp+0.008 pp+15.1%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.