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 Software5.08%+0.66 ppApplication Software3.31%+0.38 ppSemiconductors3.18%-0.22 ppIT Consulting & Other Services1.59%-0.20 ppSemiconductor Materials & Equipment0.24%-0.16 ppTechnology Hardware, Storage & Peripherals1.73%-0.13 ppElectronic Equipment & Instruments0.29%+0.12 ppCommunications Equipment1.52%+0.07 ppElectronic Manufacturing Services0.16%-0.06 ppInternet Services & Infrastructure0.19%+0.05 ppElectronic Components0.18%+0.01 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.59%
Industry change · 12M
-0.20 pp
IT Consulting & Other Services · contribution
-0.200 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $117.5bn | 0.681% | +0.322 pp | -0.141 pp | -7.2% | Yes |
| Cognizant → CTSH | United States | $40.8bn | 0.237% | +0.100 pp | -0.052 pp | -12.5% | Yes |
| Accenture → ACN | United States | $102.8bn | 0.596% | +0.248 pp | -0.019 pp | +2.0% | Yes |
| Gartner → IT | United States | $12.8bn | 0.074% | +0.028 pp | +0.012 pp | +25.5% | 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.