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

Consumer Discretionary11.4%+4.38 ppEnergy3.6%+0.25 ppConsumer Staples7.5%+0.07 ppUtilities3.3%-0.11 ppMaterials3.1%-0.19 ppIndustrials10.0%-0.23 ppReal Estate3.1%-0.29 ppCommunication Services3.2%-0.40 ppHealth Care16.5%-0.47 ppInformation Technology27.3%-1.33 ppFinancials11.1%-1.69 pp

2 · Industry

Inside Health Care

Biotechnology2.69%+0.18 ppManaged Health Care2.20%-0.16 ppHealth Care Services0.72%-0.15 ppLife Sciences Tools & Services1.95%-0.14 ppHealth Care Equipment3.14%-0.12 ppPharmaceuticals4.99%-0.05 ppHealth Care Supplies0.19%-0.04 ppHealth Care Distributors0.38%+0.02 ppHealth Care Facilities0.25%-0.01 ppHealth Care Technology0.00%+0.00 pp

3 · Sub-industry

Inside Biotechnology

Biotechnology2.69%+0.179 pp
Concentrated

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

View all contributions →
Biotechnology · weight
2.69%
Industry change · 12M
+0.18 pp
Biotechnology · contribution
+0.179 pp
Company participation
38%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Gilead Sciences →
GILD
United States$103.5bn0.353%-0.036 pp+0.102 pp+45.5%No
Vertex Pharmaceuticals →
VRTX
United States$81.0bn0.276%+0.009 pp+0.053 pp+20.7%Yes
Regeneron Pharmaceuticals →
REGN
United States$77.2bn0.263%+0.019 pp+0.043 pp+17.6%Yes
Biogen →
BIIB
United States$40.2bn0.137%-0.007 pp+0.033 pp+32.0%No
Moderna →
MRNA
United States$59.3bn0.202%-0.047 pp-0.031 pp-10.8%No
Amgen →
AMGN
United States$129.1bn0.440%-0.065 pp-0.013 pp+3.2%No
Incyte →
INCY
United States$16.1bn0.055%-0.010 pp-0.004 pp-9.0%No
AbbVie →
ABBV
United States$282.0bn0.962%-0.069 pp-0.003 pp+2.1%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.