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
4.61%
Industry change · 12M
+4.60 pp
Pharmaceuticals · contribution
+4.602 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Johnson & Johnson →
JNJ
United States$445.7bn1.597%+0.764 pp+1.594 pp+16.8%Yes
Pfizer →
PFE
United States$216.8bn0.777%+0.403 pp+0.776 pp+11.3%Yes
Lilly (Eli) →
LLY
United States$191.6bn0.686%+0.294 pp+0.685 pp+33.0%Yes
Merck & Co. →
MRK
United States$183.4bn0.657%+0.306 pp+0.656 pp-2.9%Yes
Bristol Myers Squibb →
BMY
United States$146.7bn0.526%+0.251 pp+0.525 pp+13.5%Yes
Zoetis →
ZTS
United States$83.9bn0.300%+0.153 pp+0.300 pp+27.5%Yes
Viatris →
VTRS
United States$18.4bn0.066%+0.066 pp+0.066 pp-10.1%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.