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 & Peripherals7.74%-1.98 ppSystems Software6.70%-1.56 ppSemiconductors3.02%-0.87 ppApplication Software2.86%-0.87 ppSemiconductor Materials & Equipment0.39%-0.20 ppIT Consulting & Other Services1.27%-0.19 ppCommunications Equipment0.93%-0.13 ppElectronic Equipment & Instruments0.39%-0.06 ppElectronic Manufacturing Services0.13%-0.04 ppInternet Services & Infrastructure0.13%-0.02 ppElectronic Components0.14%-0.01 ppTechnology Distributors0.09%-0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.27%
Industry change · 12M
-0.19 pp
IT Consulting & Other Services · contribution
-0.192 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 |
|---|---|---|---|---|---|---|---|
| Accenture → ACN | United States | $170.0bn | 0.613% | -0.031 pp | -0.233 pp | -34.8% | No |
| IBM → IBM | United States | $127.4bn | 0.460% | +0.038 pp | +0.076 pp | +10.6% | Yes |
| Cognizant → CTSH | United States | $29.4bn | 0.106% | -0.011 pp | -0.043 pp | -34.5% | No |
| Gartner → IT | United States | $26.6bn | 0.096% | +0.010 pp | +0.008 pp | +0.5% | 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.