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 Software5.68%+1.16 ppApplication Software3.34%+0.37 ppTechnology Hardware, Storage & Peripherals1.85%-0.14 ppElectronic Equipment & Instruments0.30%+0.13 ppIT Consulting & Other Services1.62%-0.11 ppSemiconductor Materials & Equipment0.26%-0.09 ppCommunications Equipment1.56%+0.08 ppInternet Services & Infrastructure0.20%+0.06 ppSemiconductors3.36%+0.03 ppElectronic Manufacturing Services0.18%-0.02 ppElectronic Components0.16%+0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.62%
Industry change · 12M
-0.11 pp
IT Consulting & Other Services · contribution
-0.113 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 | $118.9bn | 0.662% | +0.277 pp | -0.119 pp | +1.3% | Yes |
| Cognizant → CTSH | United States | $42.0bn | 0.234% | +0.101 pp | -0.062 pp | -9.9% | Yes |
| Accenture → ACN | United States | $116.4bn | 0.648% | +0.326 pp | +0.056 pp | +22.9% | Yes |
| Gartner → IT | United States | $14.3bn | 0.079% | +0.039 pp | +0.012 pp | +31.1% | 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.