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 Technology28.8%+2.60 ppConsumer Discretionary12.5%+1.60 ppIndustrials10.0%+0.17 ppEnergy3.5%-0.07 ppMaterials2.9%-0.09 ppReal Estate2.9%-0.37 ppHealth Care15.9%-0.60 ppCommunication Services2.8%-0.63 ppConsumer Staples7.1%-0.63 ppUtilities2.9%-0.75 ppFinancials10.7%-1.24 pp

2 · Industry

Inside Health Care

Managed Health Care2.03%-0.53 ppHealth Care Services0.66%-0.25 ppPharmaceuticals5.26%+0.22 ppLife Sciences Tools & Services1.77%-0.21 ppHealth Care Equipment2.95%+0.09 ppHealth Care Supplies0.20%+0.04 ppHealth Care Facilities0.24%+0.04 ppBiotechnology2.41%+0.02 ppHealth Care Distributors0.39%-0.01 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.41%+0.016 pp
Concentrated

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

View all contributions →
Biotechnology · weight
2.41%
Industry change · 12M
+0.02 pp
Biotechnology · contribution
+0.016 pp
Company participation
88%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Regeneron Pharmaceuticals →
REGN
United States$77.7bn0.247%+0.077 pp+0.052 pp+42.2%Yes
Moderna →
MRNA
United States$43.0bn0.137%+0.017 pp-0.048 pp-14.5%No
Vertex Pharmaceuticals →
VRTX
United States$89.9bn0.287%+0.081 pp+0.028 pp+23.6%Yes
AbbVie →
ABBV
United States$259.4bn0.827%+0.225 pp-0.024 pp+13.7%Yes
Amgen →
AMGN
United States$137.1bn0.437%+0.146 pp-0.023 pp+10.3%Yes
Biogen →
BIIB
United States$38.7bn0.123%+0.017 pp+0.022 pp+36.8%Yes
Gilead Sciences →
GILD
United States$95.3bn0.304%+0.067 pp+0.019 pp+25.2%Yes
Incyte →
INCY
United States$14.5bn0.046%+0.012 pp-0.010 pp-8.4%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.