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
Pharmaceuticals3.39%-1.02 ppManaged Health Care0.87%-0.85 ppLife Sciences Tools & Services0.91%-0.49 ppBiotechnology1.80%-0.32 ppHealth Care Equipment2.26%-0.27 ppHealth Care Services0.45%-0.07 ppHealth Care Distributors0.40%+0.07 ppHealth Care Supplies0.08%-0.06 ppHealth Care Facilities0.20%-0.04 ppHealth Care Technology0.03%-0.00 pp
3 · Sub-industry
Inside Pharmaceuticals
Pharmaceuticals · weight
3.39%
Industry change · 12M
-1.02 pp
Pharmaceuticals · contribution
-1.017 pp
Company participation
14%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $722.1bn | 1.446% | -0.147 pp | -0.514 pp | -13.2% | No |
| Merck & Co. → MRK | United States | $209.6bn | 0.420% | -0.009 pp | -0.250 pp | -23.4% | No |
| Pfizer → PFE | United States | $144.9bn | 0.290% | -0.007 pp | -0.092 pp | -5.8% | No |
| Zoetis → ZTS | United States | $64.8bn | 0.130% | -0.020 pp | -0.076 pp | -24.2% | No |
| Bristol Myers Squibb → BMY | United States | $91.8bn | 0.184% | -0.019 pp | -0.060 pp | -8.7% | No |
| Johnson & Johnson → JNJ | United States | $446.6bn | 0.894% | +0.101 pp | -0.014 pp | +18.1% | Yes |
| Viatris → VTRS | United States | $11.5bn | 0.023% | +0.001 pp | -0.009 pp | -10.6% | 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.