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
Pharmaceuticals3.77%-1.83 ppManaged Health Care1.62%-0.88 ppHealth Care Equipment2.30%-0.81 ppBiotechnology1.77%-0.80 ppLife Sciences Tools & Services1.27%-0.79 ppHealth Care Services0.49%-0.43 ppHealth Care Distributors0.29%-0.09 ppHealth Care Supplies0.13%-0.05 ppHealth Care Facilities0.18%-0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
1.77%
Industry change · 12M
-0.80 pp
Biotechnology · contribution
-0.805 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $243.4bn | 0.601% | -0.356 pp | -0.337 pp | -2.8% | No |
| Amgen → AMGN | United States | $117.9bn | 0.291% | -0.144 pp | -0.203 pp | -11.2% | No |
| Moderna → MRNA | United States | $48.7bn | 0.120% | -0.068 pp | -0.088 pp | -12.1% | No |
| Gilead Sciences → GILD | United States | $96.0bn | 0.237% | -0.116 pp | -0.056 pp | +23.7% | No |
| Regeneron Pharmaceuticals → REGN | United States | $69.1bn | 0.171% | -0.080 pp | -0.054 pp | +10.7% | No |
| Vertex Pharmaceuticals → VRTX | United States | $83.3bn | 0.206% | -0.056 pp | -0.042 pp | +20.4% | No |
| Incyte → INCY | United States | $13.7bn | 0.034% | -0.026 pp | -0.027 pp | -18.9% | No |
| Biogen → BIIB | United States | $42.9bn | 0.106% | -0.031 pp | +0.001 pp | +48.2% | 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.