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
Semiconductors17.29%+3.19 ppTechnology Hardware, Storage & Peripherals8.93%+1.44 ppApplication Software2.00%-1.38 ppSemiconductor Materials & Equipment1.75%+1.16 ppSystems Software7.68%-0.69 ppCommunications Equipment1.54%+0.41 ppIT Consulting & Other Services0.64%-0.29 ppElectronic Components0.47%+0.21 ppElectronic Manufacturing Services0.22%+0.05 ppInternet Services & Infrastructure0.09%-0.03 ppElectronic Equipment & Instruments0.24%-0.02 ppTechnology Distributors0.03%-0.01 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
0.64%
Industry change · 12M
-0.29 pp
IT Consulting & Other Services · contribution
-0.286 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2026 · 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 | $120.9bn | 0.201% | -0.005 pp | -0.142 pp | -25.5% | Yes |
| IBM → IBM | United States | $220.3bn | 0.367% | -0.118 pp | -0.103 pp | -1.5% | No |
| Cognizant → CTSH | United States | $30.6bn | 0.051% | +0.005 pp | -0.022 pp | -8.6% | Yes |
| Gartner → IT | United States | $12.5bn | 0.021% | +0.002 pp | -0.019 pp | -21.1% | 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.