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
Application Software3.00%-1.02 ppTechnology Hardware, Storage & Peripherals9.35%+0.59 ppSystems Software7.23%-0.53 ppSemiconductors3.26%-0.24 ppSemiconductor Materials & Equipment0.38%-0.15 ppCommunications Equipment0.87%-0.14 ppElectronic Equipment & Instruments0.38%-0.08 ppIT Consulting & Other Services1.27%-0.07 ppInternet Services & Infrastructure0.12%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppTechnology Distributors0.08%-0.01 ppElectronic Components0.14%-0.01 pp
3 · Sub-industry
Inside Technology Distributors
Technology Distributors · weight
0.08%
Industry change · 12M
-0.01 pp
Technology Distributors · contribution
-0.010 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| CDW Corporation → CDW | United States | $23.1bn | 0.083% | -0.000 pp | -0.010 pp | -13.9% | 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.