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
Pharmaceuticals3.42%-1.86 ppManaged Health Care1.47%-1.06 ppLife Sciences Tools & Services1.21%-0.89 ppBiotechnology1.62%-0.79 ppHealth Care Equipment2.16%-0.76 ppHealth Care Services0.49%-0.39 ppHealth Care Distributors0.27%-0.09 ppHealth Care Facilities0.16%-0.05 ppHealth Care Supplies0.13%-0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
1.62%
Industry change · 12M
-0.79 pp
Biotechnology · contribution
-0.790 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 | $263.9bn | 0.575% | -0.328 pp | -0.296 pp | +8.5% | No |
| Amgen → AMGN | United States | $125.1bn | 0.273% | -0.160 pp | -0.182 pp | -2.2% | No |
| Moderna → MRNA | United States | $44.9bn | 0.098% | -0.076 pp | -0.127 pp | -28.3% | No |
| Gilead Sciences → GILD | United States | $95.0bn | 0.207% | -0.139 pp | -0.051 pp | +32.4% | No |
| Vertex Pharmaceuticals → VRTX | United States | $90.7bn | 0.198% | -0.098 pp | -0.049 pp | +25.7% | No |
| Regeneron Pharmaceuticals → REGN | United States | $69.7bn | 0.152% | -0.102 pp | -0.036 pp | +27.5% | No |
| Incyte → INCY | United States | $14.2bn | 0.031% | -0.025 pp | -0.028 pp | -18.0% | No |
| Biogen → BIIB | United States | $39.1bn | 0.085% | -0.063 pp | -0.022 pp | +25.6% | 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.