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
Pharmaceuticals2.37%+2.37 ppHealth Care Equipment1.67%+1.66 ppBiotechnology1.11%+1.10 ppLife Sciences Tools & Services0.99%+0.99 ppManaged Health Care0.94%+0.94 ppHealth Care Services0.42%+0.42 ppHealth Care Distributors0.14%+0.14 ppHealth Care Supplies0.14%+0.14 ppHealth Care Facilities0.12%+0.12 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
1.11%
Industry change · 12M
+1.10 pp
Biotechnology · contribution
+1.105 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2021 · 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 | $190.3bn | 0.380% | -0.404 pp | +0.380 pp | +32.4% | No |
| Amgen → AMGN | United States | $129.9bn | 0.260% | -0.289 pp | +0.259 pp | +15.8% | No |
| Gilead Sciences → GILD | United States | $77.2bn | 0.154% | -0.169 pp | +0.154 pp | -7.9% | No |
| Vertex Pharmaceuticals → VRTX | United States | $55.3bn | 0.110% | -0.141 pp | +0.110 pp | -5.1% | No |
| Regeneron Pharmaceuticals → REGN | United States | $42.3bn | 0.085% | -0.121 pp | +0.084 pp | +1.3% | No |
| Biogen → BIIB | United States | $41.6bn | 0.083% | -0.074 pp | +0.083 pp | -11.5% | No |
| Incyte → INCY | United States | $17.3bn | 0.035% | -0.044 pp | +0.034 pp | +4.3% | 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.