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 Care2.54%+0.56 ppPharmaceuticals5.28%+0.53 ppHealth Care Equipment2.91%-0.33 ppBiotechnology2.41%-0.14 ppHealth Care Supplies0.18%-0.13 ppLife Sciences Tools & Services2.09%-0.11 ppHealth Care Distributors0.37%+0.07 ppHealth Care Facilities0.22%-0.07 ppHealth Care Services0.89%+0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
2.41%
Industry change · 12M
-0.14 pp
Biotechnology · contribution
-0.142 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2022 · 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 |
|---|---|---|---|---|---|---|---|
| Moderna → MRNA | United States | $65.3bn | 0.224% | +0.029 pp | -0.263 pp | -53.6% | Yes |
| AbbVie → ABBV | United States | $253.6bn | 0.871% | -0.068 pp | +0.167 pp | +28.5% | No |
| Vertex Pharmaceuticals → VRTX | United States | $71.7bn | 0.246% | -0.005 pp | +0.067 pp | +39.1% | Yes |
| Biogen → BIIB | United States | $31.2bn | 0.107% | -0.003 pp | -0.060 pp | -34.2% | No |
| Gilead Sciences → GILD | United States | $74.9bn | 0.258% | -0.011 pp | -0.036 pp | -8.5% | No |
| Amgen → AMGN | United States | $132.2bn | 0.454% | +0.004 pp | -0.022 pp | +5.8% | No |
| Regeneron Pharmaceuticals → REGN | United States | $54.7bn | 0.188% | -0.036 pp | +0.003 pp | +1.2% | No |
| Incyte → INCY | United States | $17.2bn | 0.059% | -0.001 pp | +0.001 pp | +0.4% | 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.