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
Pharmaceuticals3.88%-1.03 ppBiotechnology1.85%-0.66 ppManaged Health Care1.46%-0.55 ppLife Sciences Tools & Services1.21%-0.43 ppHealth Care Equipment2.62%-0.39 ppHealth Care Services0.46%-0.22 ppHealth Care Distributors0.37%-0.08 ppHealth Care Facilities0.19%-0.06 ppHealth Care Technology0.03%+0.03 ppHealth Care Supplies0.13%-0.02 pp
3 · Sub-industry
Inside Pharmaceuticals
Pharmaceuticals · weight
3.88%
Industry change · 12M
-1.03 pp
Pharmaceuticals · contribution
-1.034 pp
Company participation
14%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 |
|---|---|---|---|---|---|---|---|
| Merck & Co. → MRK | United States | $250.0bn | 0.556% | -0.054 pp | -0.354 pp | -15.9% | No |
| Johnson & Johnson → JNJ | United States | $366.3bn | 0.815% | -0.090 pp | -0.323 pp | -1.2% | No |
| Pfizer → PFE | United States | $150.3bn | 0.334% | -0.043 pp | -0.120 pp | +4.1% | No |
| Lilly (Eli) → LLY | United States | $770.0bn | 1.712% | -0.139 pp | -0.110 pp | +26.4% | No |
| Zoetis → ZTS | United States | $77.1bn | 0.171% | -0.019 pp | -0.085 pp | -8.0% | No |
| Bristol Myers Squibb → BMY | United States | $119.6bn | 0.266% | +0.000 pp | -0.030 pp | +26.7% | Yes |
| Viatris → VTRS | United States | $13.5bn | 0.030% | -0.003 pp | -0.012 pp | -0.2% | 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.