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 & Peripherals8.16%-1.83 ppSystems Software6.57%-1.44 ppApplication Software3.04%-0.49 ppSemiconductors3.26%-0.45 ppIT Consulting & Other Services1.23%-0.16 ppSemiconductor Materials & Equipment0.42%-0.11 ppCommunications Equipment0.89%-0.08 ppElectronic Equipment & Instruments0.39%-0.03 ppElectronic Components0.14%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.02 ppTechnology Distributors0.09%+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
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2023 · 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 | $199.9bn | 0.684% | +0.022 pp | -0.105 pp | -9.6% | Yes |
| Arista Networks → ANET | United States | $9.6bn | 0.033% | +0.000 pp | +0.025 pp | +1.4% | No |
| Motorola Solutions → MSI | United States | $43.0bn | 0.147% | -0.001 pp | +0.015 pp | +12.4% | No |
| F5, Inc. → FFIV | United States | $8.9bn | 0.031% | +0.000 pp | -0.012 pp | -28.9% | 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.