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 & Peripherals8.16%-1.83 ppSystems Software6.57%-1.44 ppApplication Software3.04%-0.49 ppSemiconductors3.26%-0.45 ppIT Consulting & Other Services1.23%-0.16 ppSemiconductor Materials & Equipment0.42%-0.11 ppCommunications Equipment0.89%-0.08 ppElectronic Equipment & Instruments0.39%-0.03 ppElectronic Components0.14%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.02 ppTechnology Distributors0.09%+0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.23%
Industry change · 12M
-0.16 pp
IT Consulting & Other Services · contribution
-0.159 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2023 · 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 | $177.8bn | 0.608% | -0.033 pp | -0.149 pp | -19.9% | No |
| Cognizant → CTSH | United States | $34.3bn | 0.117% | +0.003 pp | -0.034 pp | -20.6% | Yes |
| IBM → IBM | United States | $121.8bn | 0.417% | -0.027 pp | +0.014 pp | +5.9% | No |
| Gartner → IT | United States | $26.7bn | 0.091% | +0.007 pp | +0.010 pp | +15.1% | 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.