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
Application Software3.10%-0.63 ppTechnology Hardware, Storage & Peripherals8.96%+0.50 ppSystems Software7.63%+0.27 ppSemiconductor Materials & Equipment0.41%-0.18 ppIT Consulting & Other Services1.39%+0.09 ppSemiconductors3.43%-0.09 ppCommunications Equipment0.89%-0.08 ppElectronic Equipment & Instruments0.39%-0.04 ppInternet Services & Infrastructure0.13%-0.03 ppElectronic Components0.14%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside Communications Equipment
Communications Equipment · weight
0.89%
Industry change · 12M
-0.08 pp
Communications Equipment · contribution
-0.077 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 |
|---|---|---|---|---|---|---|---|
| Cisco → CSCO | United States | $176.6bn | 0.687% | -0.093 pp | -0.102 pp | -17.4% | No |
| Arista Networks → ANET | United States | $7.2bn | 0.028% | -0.008 pp | +0.022 pp | +3.5% | Yes |
| Motorola Solutions → MSI | United States | $35.1bn | 0.136% | -0.001 pp | +0.006 pp | -2.0% | Yes |
| F5, Inc. → FFIV | United States | $9.3bn | 0.036% | -0.007 pp | -0.003 pp | -18.0% | 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.