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
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Health Care
Health Care Equipment1.52%-1.02 ppPharmaceuticals4.10%+0.62 ppBiotechnology1.85%+0.08 ppLife Sciences Tools & Services0.83%-0.07 ppHealth Care Distributors0.37%-0.06 ppHealth Care Facilities0.15%-0.05 ppHealth Care Technology0.07%+0.05 ppHealth Care Services0.46%-0.03 ppManaged Health Care0.94%+0.02 ppHealth Care Supplies0.09%-0.00 pp
3 · Sub-industry
Inside 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
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Lilly (Eli) → LLY | United States | $1129.5bn | 1.963% | +0.699 pp | +0.370 pp | +55.0% | Yes |
| Johnson & Johnson → JNJ | United States | $611.4bn | 1.062% | +0.204 pp | +0.270 pp | +70.4% | Yes |
| Merck & Co. → MRK | United States | $317.4bn | 0.551% | +0.118 pp | +0.123 pp | +67.8% | Yes |
| Zoetis → ZTS | United States | $30.1bn | 0.052% | -0.020 pp | -0.097 pp | -53.2% | No |
| Pfizer → PFE | United States | $137.2bn | 0.238% | +0.006 pp | -0.059 pp | +6.3% | No |
| Viatris → VTRS | United States | $18.5bn | 0.032% | +0.009 pp | +0.010 pp | +84.8% | Yes |
| Bristol Myers Squibb → BMY | United States | $117.7bn | 0.204% | +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.