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 Equipment2.62%+0.68 ppManaged Health Care0.94%-0.32 ppBiotechnology1.86%+0.26 ppLife Sciences Tools & Services0.91%-0.18 ppPharmaceuticals3.59%+0.17 ppHealth Care Distributors0.43%+0.14 ppHealth Care Services0.49%+0.07 ppHealth Care Facilities0.21%+0.04 ppHealth Care Supplies0.09%-0.02 ppHealth Care Technology0.03%+0.01 pp
3 · Sub-industry
Inside Pharmaceuticals
Pharmaceuticals · weight
3.59%
Industry change · 12M
+0.17 pp
Pharmaceuticals · contribution
+0.172 pp
Company participation
14%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Johnson & Johnson → JNJ | United States | $373.4bn | 0.846% | -0.042 pp | +0.171 pp | +9.3% | No |
| Merck & Co. → MRK | United States | $192.9bn | 0.437% | -0.084 pp | -0.171 pp | -37.0% | No |
| Lilly (Eli) → LLY | United States | $699.1bn | 1.584% | -0.368 pp | +0.094 pp | -9.5% | No |
| Bristol Myers Squibb → BMY | United States | $98.3bn | 0.223% | -0.048 pp | +0.063 pp | +23.3% | No |
| Zoetis → ZTS | United States | $75.1bn | 0.170% | +0.003 pp | +0.022 pp | +0.6% | Yes |
| Pfizer → PFE | United States | $133.5bn | 0.303% | -0.032 pp | -0.008 pp | -12.6% | No |
| Viatris → VTRS | United States | $10.3bn | 0.023% | -0.001 pp | -0.001 pp | -13.2% | 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.