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
Managed Health Care0.84%-0.75 ppPharmaceuticals3.52%-0.71 ppBiotechnology1.80%-0.33 ppHealth Care Equipment2.20%-0.32 ppLife Sciences Tools & Services1.00%-0.24 ppHealth Care Distributors0.43%+0.09 ppHealth Care Services0.42%-0.07 ppHealth Care Supplies0.09%-0.05 ppHealth Care Facilities0.21%-0.01 ppHealth Care Technology0.02%-0.01 pp
3 · Sub-industry
Inside Pharmaceuticals
Pharmaceuticals · weight
3.52%
Industry change · 12M
-0.71 pp
Pharmaceuticals · contribution
-0.714 pp
Company participation
43%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $815.7bn | 1.598% | +0.119 pp | -0.253 pp | +4.8% | Yes |
| Merck & Co. → MRK | United States | $214.8bn | 0.421% | +0.007 pp | -0.189 pp | -12.9% | No |
| Pfizer → PFE | United States | $140.1bn | 0.275% | -0.005 pp | -0.102 pp | -6.8% | No |
| Bristol Myers Squibb → BMY | United States | $93.8bn | 0.184% | -0.002 pp | -0.082 pp | -13.3% | No |
| Zoetis → ZTS | United States | $63.9bn | 0.125% | -0.012 pp | -0.065 pp | -18.3% | No |
| Johnson & Johnson → JNJ | United States | $455.0bn | 0.891% | +0.055 pp | -0.013 pp | +22.0% | Yes |
| Viatris → VTRS | United States | $12.1bn | 0.024% | +0.002 pp | -0.009 pp | -6.4% | 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.