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 Care1.83%-0.37 ppBiotechnology2.35%-0.34 ppLife Sciences Tools & Services1.64%-0.32 ppHealth Care Equipment2.96%-0.17 ppHealth Care Distributors0.43%+0.05 ppPharmaceuticals5.03%+0.03 ppHealth Care Services0.70%-0.02 ppHealth Care Supplies0.20%+0.01 ppHealth Care Facilities0.24%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.20%
Industry change · 12M
+0.01 pp
Health Care Supplies · contribution
+0.014 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2024 · 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 |
|---|---|---|---|---|---|---|---|
| Cooper Companies (The) → COO | United States | $20.2bn | 0.056% | +0.042 pp | +0.040 pp | +8.7% | Yes |
| Align Technology → ALGN | United States | $24.6bn | 0.068% | +0.006 pp | -0.019 pp | -1.9% | Yes |
| West Pharmaceutical Services → WST | United States | $29.0bn | 0.080% | +0.003 pp | -0.007 pp | +14.5% | 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.