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
Pharmaceuticals4.80%+2.43 ppHealth Care Equipment3.31%+1.65 ppManaged Health Care2.29%+1.35 ppBiotechnology2.39%+1.28 ppLife Sciences Tools & Services2.05%+1.06 ppHealth Care Services0.90%+0.48 ppHealth Care Distributors0.34%+0.20 ppHealth Care Facilities0.26%+0.15 ppHealth Care Supplies0.26%+0.12 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Biotechnology
Biotechnology · weight
2.39%
Industry change · 12M
+1.28 pp
Biotechnology · contribution
+1.280 pp
Company participation
63%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| AbbVie → ABBV | United States | $261.4bn | 0.907% | +0.218 pp | +0.526 pp | +43.5% | Yes |
| Moderna → MRNA | United States | $61.9bn | 0.215% | -0.268 pp | +0.215 pp | -0.8% | No |
| Amgen → AMGN | United States | $126.2bn | 0.438% | +0.059 pp | +0.178 pp | +3.9% | Yes |
| Regeneron Pharmaceuticals → REGN | United States | $58.1bn | 0.202% | -0.001 pp | +0.117 pp | +37.2% | Yes |
| Gilead Sciences → GILD | United States | $75.7bn | 0.263% | -0.029 pp | +0.109 pp | +2.6% | No |
| Vertex Pharmaceuticals → VRTX | United States | $58.6bn | 0.203% | +0.043 pp | +0.093 pp | +8.2% | Yes |
| Biogen → BIIB | United States | $31.0bn | 0.108% | -0.009 pp | +0.024 pp | -22.7% | No |
| Incyte → INCY | United States | $15.1bn | 0.052% | +0.002 pp | +0.018 pp | -13.2% | Yes |
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.