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
Systems Software6.41%-2.09 ppApplication Software2.90%-1.33 ppSemiconductors2.86%-0.55 ppTechnology Hardware, Storage & Peripherals8.94%+0.38 ppSemiconductor Materials & Equipment0.35%-0.18 ppCommunications Equipment0.87%-0.11 ppIT Consulting & Other Services1.28%-0.07 ppElectronic Equipment & Instruments0.38%-0.06 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.01 ppElectronic Components0.14%-0.00 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.28%
Industry change · 12M
-0.07 pp
IT Consulting & Other Services · contribution
-0.067 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $180.8bn | 0.642% | -0.029 pp | -0.122 pp | -19.8% | No |
| IBM → IBM | United States | $125.0bn | 0.444% | +0.038 pp | +0.086 pp | +21.5% | Yes |
| Cognizant → CTSH | United States | $32.2bn | 0.114% | -0.007 pp | -0.023 pp | -19.2% | No |
| Gartner → IT | United States | $23.9bn | 0.085% | +0.011 pp | -0.008 pp | -9.0% | 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.