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
Technology Hardware, Storage & Peripherals9.07%+1.21 ppSystems Software7.47%+0.59 ppApplication Software3.05%-0.52 ppSemiconductors3.74%+0.29 ppSemiconductor Materials & Equipment0.48%-0.11 ppCommunications Equipment0.87%-0.10 ppIT Consulting & Other Services1.35%+0.06 ppInternet Services & Infrastructure0.13%-0.03 ppElectronic Components0.15%-0.02 ppElectronic Equipment & Instruments0.40%-0.02 ppElectronic Manufacturing Services0.15%-0.01 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside IT Consulting & Other Services
IT Consulting & Other Services · weight
1.35%
Industry change · 12M
+0.06 pp
IT Consulting & Other Services · contribution
+0.060 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2022 · 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 | $190.1bn | 0.685% | -0.014 pp | +0.041 pp | +7.0% | No |
| IBM → IBM | United States | $124.9bn | 0.450% | +0.068 pp | +0.010 pp | +6.1% | Yes |
| Cognizant → CTSH | United States | $38.9bn | 0.140% | -0.017 pp | +0.005 pp | +5.8% | No |
| Gartner → IT | United States | $21.1bn | 0.076% | -0.004 pp | +0.005 pp | +13.2% | 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.