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
Biotechnology2.50%-0.59 ppLife Sciences Tools & Services1.81%+0.27 ppHealth Care Services0.93%+0.25 ppHealth Care Equipment3.19%+0.21 ppHealth Care Distributors0.35%-0.15 ppManaged Health Care1.93%-0.15 ppPharmaceuticals5.74%+0.14 ppHealth Care Facilities0.24%+0.04 ppHealth Care Supplies0.16%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.16%
Industry change · 12M
+0.02 pp
Health Care Supplies · contribution
+0.024 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2019 · 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 | $26.0bn | 0.145% | +0.079 pp | +0.022 pp | +29.9% | Yes |
| Cooper Companies (The) → COO | United States | $3.6bn | 0.020% | +0.009 pp | +0.003 pp | +26.8% | 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.