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 Information Technology
Semiconductors12.14%+8.70 ppSystems Software7.51%-1.43 ppTechnology Hardware, Storage & Peripherals8.36%-1.00 ppApplication Software3.41%-0.34 ppSemiconductor Materials & Equipment0.64%+0.17 ppCommunications Equipment0.79%-0.17 ppIT Consulting & Other Services1.14%-0.15 ppElectronic Components0.19%+0.07 ppElectronic Equipment & Instruments0.29%-0.06 ppTechnology Distributors0.06%-0.03 ppElectronic Manufacturing Services0.14%+0.01 ppInternet Services & Infrastructure0.13%+0.01 pp
3 · Sub-industry
Inside Electronic Manufacturing Services
Electronic Manufacturing Services · weight
0.14%
Industry change · 12M
+0.01 pp
Electronic Manufacturing Services · contribution
+0.012 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 |
|---|---|---|---|---|---|---|---|
| Jabil → JBL | United States | $13.9bn | 0.033% | +0.010 pp | +0.033 pp | +0.5% | Yes |
| TE Connectivity → TEL | United States | $44.8bn | 0.105% | +0.021 pp | -0.020 pp | +27.3% | 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.