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
Pharmaceuticals3.70%-2.35 ppManaged Health Care1.49%-1.26 ppBiotechnology1.65%-1.11 ppLife Sciences Tools & Services1.23%-0.87 ppHealth Care Equipment2.33%-0.72 ppHealth Care Services0.50%-0.46 ppHealth Care Distributors0.30%-0.09 ppHealth Care Supplies0.14%-0.04 ppHealth Care Facilities0.19%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
1.65%
Industry change · 12M
-1.11 pp
Biotechnology · contribution
-1.112 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2023 · 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 |
|---|---|---|---|---|---|---|---|
| AbbVie → ABBV | United States | $237.7bn | 0.550% | -0.412 pp | -0.503 pp | -8.6% | No |
| Amgen → AMGN | United States | $118.6bn | 0.274% | -0.166 pp | -0.231 pp | -5.7% | No |
| Moderna → MRNA | United States | $46.3bn | 0.107% | -0.095 pp | -0.114 pp | -14.9% | No |
| Gilead Sciences → GILD | United States | $96.1bn | 0.222% | -0.131 pp | -0.079 pp | +29.6% | No |
| Vertex Pharmaceuticals → VRTX | United States | $90.6bn | 0.210% | -0.067 pp | -0.071 pp | +24.9% | No |
| Regeneron Pharmaceuticals → REGN | United States | $67.5bn | 0.156% | -0.107 pp | -0.060 pp | +21.6% | No |
| Incyte → INCY | United States | $13.9bn | 0.032% | -0.023 pp | -0.033 pp | -18.1% | No |
| Biogen → BIIB | United States | $41.2bn | 0.095% | -0.042 pp | -0.021 pp | +39.7% | 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.