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 Software5.30%+0.89 ppApplication Software3.29%+0.39 ppSemiconductors3.21%-0.25 ppTechnology Hardware, Storage & Peripherals1.82%-0.21 ppSemiconductor Materials & Equipment0.24%-0.15 ppIT Consulting & Other Services1.65%-0.13 ppCommunications Equipment1.56%+0.13 ppElectronic Equipment & Instruments0.30%+0.12 ppElectronic Manufacturing Services0.16%-0.06 ppInternet Services & Infrastructure0.19%+0.05 ppElectronic Components0.17%+0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.65%
Industry change · 12M
-0.13 pp
IT Consulting & Other Services · contribution
-0.134 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2019 · 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 |
|---|---|---|---|---|---|---|---|
| IBM → IBM | United States | $120.0bn | 0.690% | +0.337 pp | -0.139 pp | -3.7% | Yes |
| Cognizant → CTSH | United States | $41.7bn | 0.239% | +0.108 pp | -0.051 pp | -9.0% | Yes |
| Accenture → ACN | United States | $112.1bn | 0.644% | +0.323 pp | +0.044 pp | +16.7% | Yes |
| Gartner → IT | United States | $13.6bn | 0.078% | +0.037 pp | +0.013 pp | +29.0% | 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.