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
4.10%
Industry change · 12M
+0.62 pp
Pharmaceuticals · contribution
+0.617 pp
Company participation
71%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 2026 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Lilly (Eli) →
LLY
United States$1129.5bn1.963%+0.699 pp+0.370 pp+55.0%Yes
Johnson & Johnson →
JNJ
United States$611.4bn1.062%+0.204 pp+0.270 pp+70.4%Yes
Merck & Co. →
MRK
United States$317.4bn0.551%+0.118 pp+0.123 pp+67.8%Yes
Zoetis →
ZTS
United States$30.1bn0.052%-0.020 pp-0.097 pp-53.2%No
Pfizer →
PFE
United States$137.2bn0.238%+0.006 pp-0.059 pp+6.3%No
Viatris →
VTRS
United States$18.5bn0.032%+0.009 pp+0.010 pp+84.8%Yes
Bristol Myers Squibb →
BMY
United States$117.7bn0.204%+0.025 pp+0.001 pp+30.7%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.