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
Semiconductors13.54%+10.43 ppSystems Software8.64%+2.13 ppApplication Software3.56%+0.95 ppTechnology Hardware, Storage & Peripherals6.94%+0.63 ppCommunications Equipment1.06%+0.51 ppIT Consulting & Other Services1.15%+0.36 ppSemiconductor Materials & Equipment0.64%+0.19 ppElectronic Components0.23%+0.13 ppElectronic Equipment & Instruments0.28%+0.06 ppElectronic Manufacturing Services0.16%+0.05 ppInternet Services & Infrastructure0.14%+0.04 ppTechnology Distributors0.05%-0.01 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.15%
Industry change · 12M
+0.36 pp
IT Consulting & Other Services · contribution
+0.362 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2025 · 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 | $274.0bn | 0.591% | +0.043 pp | +0.293 pp | +75.6% | Yes |
| Accenture → ACN | United States | $190.4bn | 0.411% | -0.061 pp | +0.048 pp | +0.3% | No |
| Cognizant → CTSH | United States | $38.5bn | 0.083% | -0.007 pp | +0.020 pp | +16.5% | No |
| Gartner → IT | United States | $31.1bn | 0.067% | -0.009 pp | +0.002 pp | -10.0% | 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.