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
Semiconductors12.22%+9.11 ppSystems Software8.36%+2.20 ppTechnology Hardware, Storage & Peripherals7.10%+1.27 ppApplication Software3.35%+1.05 ppCommunications Equipment1.01%+0.47 ppIT Consulting & Other Services1.17%+0.41 ppSemiconductor Materials & Equipment0.57%+0.15 ppElectronic Components0.22%+0.12 ppInternet Services & Infrastructure0.14%+0.08 ppElectronic Equipment & Instruments0.29%+0.06 ppElectronic Manufacturing Services0.15%+0.03 ppTechnology Distributors0.05%-0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.17%
Industry change · 12M
+0.41 pp
IT Consulting & Other Services · contribution
+0.408 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $240.8bn | 0.546% | +0.022 pp | +0.253 pp | +60.0% | Yes |
| Accenture → ACN | United States | $201.8bn | 0.457% | -0.039 pp | +0.114 pp | +14.2% | No |
| Cognizant → CTSH | United States | $39.9bn | 0.090% | -0.002 pp | +0.028 pp | +24.3% | Yes |
| Gartner → IT | United States | $33.6bn | 0.076% | -0.009 pp | +0.014 pp | +4.0% | 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.