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 Software3.00%-1.02 ppTechnology Hardware, Storage & Peripherals9.35%+0.59 ppSystems Software7.23%-0.53 ppSemiconductors3.26%-0.24 ppSemiconductor Materials & Equipment0.38%-0.15 ppCommunications Equipment0.87%-0.14 ppElectronic Equipment & Instruments0.38%-0.08 ppIT Consulting & Other Services1.27%-0.07 ppInternet Services & Infrastructure0.12%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppTechnology Distributors0.08%-0.01 ppElectronic Components0.14%-0.01 pp
3 · Sub-industry
Inside Communications Equipment
Communications Equipment · weight
0.87%
Industry change · 12M
-0.14 pp
Communications Equipment · contribution
-0.143 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 | $185.2bn | 0.663% | -0.009 pp | -0.169 pp | -22.0% | No |
| Arista Networks → ANET | United States | $9.1bn | 0.033% | +0.004 pp | +0.027 pp | +29.8% | Yes |
| F5, Inc. → FFIV | United States | $9.4bn | 0.033% | -0.002 pp | -0.008 pp | -22.8% | No |
| Motorola Solutions → MSI | United States | $40.6bn | 0.145% | +0.013 pp | +0.007 pp | +1.0% | Yes |
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.