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
Pharmaceuticals3.42%-1.35 ppManaged Health Care0.84%-1.00 ppLife Sciences Tools & Services0.96%-0.47 ppBiotechnology1.80%-0.46 ppHealth Care Equipment2.41%-0.19 ppHealth Care Services0.47%-0.07 ppHealth Care Supplies0.09%-0.06 ppHealth Care Facilities0.20%-0.05 ppHealth Care Distributors0.39%+0.01 ppHealth Care Technology0.03%-0.00 pp
3 · Sub-industry
Inside Pharmaceuticals
Pharmaceuticals · weight
3.42%
Industry change · 12M
-1.35 pp
Pharmaceuticals · contribution
-1.355 pp
Company participation
29%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| Lilly (Eli) → LLY | United States | $693.4bn | 1.437% | -0.147 pp | -0.767 pp | -23.1% | No |
| Merck & Co. → MRK | United States | $210.1bn | 0.436% | -0.002 pp | -0.290 pp | -26.6% | No |
| Pfizer → PFE | United States | $140.8bn | 0.292% | -0.011 pp | -0.105 pp | -8.7% | No |
| Johnson & Johnson → JNJ | United States | $426.7bn | 0.885% | +0.038 pp | -0.080 pp | +10.3% | Yes |
| Zoetis → ZTS | United States | $69.3bn | 0.144% | -0.026 pp | -0.057 pp | -13.7% | No |
| Bristol Myers Squibb → BMY | United States | $96.0bn | 0.199% | -0.024 pp | -0.046 pp | -1.1% | No |
| Viatris → VTRS | United States | $12.3bn | 0.025% | +0.002 pp | -0.009 pp | -8.5% | 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.