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 Software4.46%-2.74 ppTechnology Hardware, Storage & Peripherals5.82%-2.61 ppApplication Software1.57%-1.73 ppSemiconductors10.39%-0.75 ppIT Consulting & Other Services0.55%-0.65 ppSemiconductor Materials & Equipment0.94%+0.37 ppCommunications Equipment0.86%-0.18 ppElectronic Components0.30%+0.11 ppElectronic Equipment & Instruments0.18%-0.11 ppInternet Services & Infrastructure0.06%-0.07 ppTechnology Distributors0.02%-0.03 ppElectronic Manufacturing Services0.13%-0.01 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
0.55%
Industry change · 12M
-0.65 pp
IT Consulting & Other Services · contribution
-0.648 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $133.0bn | 0.182% | -0.130 pp | -0.314 pp | -39.5% | No |
| IBM → IBM | United States | $225.3bn | 0.309% | -0.257 pp | -0.214 pp | -2.5% | No |
| Gartner → IT | United States | $11.1bn | 0.015% | -0.018 pp | -0.070 pp | -68.5% | No |
| Cognizant → CTSH | United States | $30.8bn | 0.042% | -0.031 pp | -0.050 pp | -21.3% | No |
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.