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 Software2.70%-1.57 ppSemiconductors1.69%-1.54 ppApplication Software1.76%-1.03 ppIT Consulting & Other Services0.88%-0.86 ppTechnology Hardware, Storage & Peripherals0.96%-0.73 ppCommunications Equipment0.80%-0.52 ppSemiconductor Materials & Equipment0.14%-0.21 ppElectronic Manufacturing Services0.09%-0.11 ppElectronic Components0.10%-0.08 ppInternet Services & Infrastructure0.10%-0.03 ppElectronic Equipment & Instruments0.14%-0.02 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
0.88%
Industry change · 12M
-0.86 pp
IT Consulting & Other Services · contribution
-0.863 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $116.8bn | 0.385% | +0.045 pp | -0.441 pp | -14.2% | Yes |
| Accenture → ACN | United States | $97.8bn | 0.323% | -0.018 pp | -0.261 pp | -2.7% | No |
| Cognizant → CTSH | United States | $40.3bn | 0.133% | -0.002 pp | -0.129 pp | -9.7% | No |
| Gartner → IT | United States | $12.4bn | 0.041% | -0.005 pp | -0.031 pp | -2.1% | 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.