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
Health Care Equipment3.11%+0.29 ppPharmaceuticals5.77%+0.27 ppBiotechnology3.12%-0.26 ppManaged Health Care2.13%+0.18 ppLife Sciences Tools & Services1.64%+0.12 ppHealth Care Distributors0.40%-0.11 ppHealth Care Services0.63%-0.07 ppHealth Care Facilities0.25%+0.05 ppHealth Care Supplies0.19%+0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.19%
Industry change · 12M
+0.05 pp
Health Care Supplies · contribution
+0.049 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2018 · 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 |
|---|---|---|---|---|---|---|---|
| Align Technology → ALGN | United States | $28.6bn | 0.167% | +0.044 pp | +0.047 pp | +36.1% | Yes |
| Cooper Companies (The) → COO | United States | $3.2bn | 0.019% | +0.001 pp | +0.002 pp | +6.5% | 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.