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›Pharmaceuticals›Pharmaceuticals
Pharmaceuticals · weight
4.62%
Industry change · 12M
+4.62 pp
Pharmaceuticals · contribution
+4.619 pp
Company participation
57%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Johnson & Johnson →
JNJ
United States$425.1bn1.493%-0.039 pp+1.491 pp+11.3%No
Pfizer →
PFE
United States$241.1bn0.847%+0.073 pp+0.846 pp+28.5%Yes
Lilly (Eli) →
LLY
United States$221.0bn0.776%-0.001 pp+0.775 pp+58.8%Yes
Merck & Co. →
MRK
United States$190.1bn0.668%-0.028 pp+0.667 pp-1.8%Yes
Bristol Myers Squibb →
BMY
United States$131.5bn0.462%-0.065 pp+0.461 pp+2.0%No
Zoetis →
ZTS
United States$92.0bn0.323%+0.011 pp+0.323 pp+18.1%Yes
Viatris →
VTRS
United States$16.4bn0.058%-0.003 pp+0.058 pp-7.3%No

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.