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 Software2.82%-1.14 ppSystems Software7.08%-0.53 ppTechnology Hardware, Storage & Peripherals9.01%+0.44 ppSemiconductors3.07%-0.44 ppSemiconductor Materials & Equipment0.36%-0.16 ppCommunications Equipment0.86%-0.13 ppIT Consulting & Other Services1.27%-0.09 ppElectronic Equipment & Instruments0.38%-0.06 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.12%-0.02 ppElectronic Components0.14%-0.01 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.27%
Industry change · 12M
-0.09 pp
IT Consulting & Other Services · contribution
-0.091 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $163.9bn | 0.644% | -0.044 pp | -0.071 pp | -18.6% | No |
| Cognizant → CTSH | United States | $29.7bn | 0.117% | -0.020 pp | -0.020 pp | -21.5% | No |
| IBM → IBM | United States | $107.3bn | 0.422% | -0.072 pp | +0.004 pp | -6.0% | No |
| Gartner → IT | United States | $21.9bn | 0.086% | +0.010 pp | -0.003 pp | -8.9% | 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.