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
Technology Hardware, Storage & Peripherals9.61%+1.23 ppSystems Software7.66%+0.63 ppApplication Software3.07%-0.48 ppSemiconductor Materials & Equipment0.45%-0.11 ppSemiconductors3.39%-0.07 ppIT Consulting & Other Services1.36%+0.04 ppElectronic Components0.15%-0.03 ppInternet Services & Infrastructure0.14%-0.02 ppElectronic Manufacturing Services0.15%-0.02 ppTechnology Distributors0.08%-0.01 ppCommunications Equipment0.93%-0.01 ppElectronic Equipment & Instruments0.42%-0.01 pp
3 · Sub-industry
Inside Electronic Components
Electronic Components · weight
0.15%
Industry change · 12M
-0.03 pp
Electronic Components · contribution
-0.027 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 |
|---|---|---|---|---|---|---|---|
| Corning Inc. → GLW | United States | $29.7bn | 0.107% | -0.013 pp | -0.029 pp | -18.4% | No |
| Amphenol → APH | United States | $10.7bn | 0.039% | -0.001 pp | +0.002 pp | +7.2% | No |
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.