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
Systems Software7.98%+0.32 ppTechnology Hardware, Storage & Peripherals9.34%-0.26 ppApplication Software3.27%+0.20 ppIT Consulting & Other Services1.17%-0.19 ppSemiconductors3.32%-0.07 ppElectronic Equipment & Instruments0.37%-0.05 ppCommunications Equipment0.89%-0.05 ppSemiconductor Materials & Equipment0.41%-0.04 ppElectronic Manufacturing Services0.13%-0.02 ppInternet Services & Infrastructure0.12%-0.01 ppElectronic Components0.13%-0.01 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside Communications Equipment
Communications Equipment · weight
0.89%
Industry change · 12M
-0.05 pp
Communications Equipment · contribution
-0.048 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 | $193.5bn | 0.654% | -0.031 pp | -0.082 pp | -0.2% | No |
| Motorola Solutions → MSI | United States | $48.7bn | 0.165% | +0.018 pp | +0.035 pp | +38.3% | Yes |
| F5, Inc. → FFIV | United States | $8.1bn | 0.027% | -0.003 pp | -0.009 pp | -19.7% | No |
| Arista Networks → ANET | United States | $12.3bn | 0.041% | +0.008 pp | +0.009 pp | +38.6% | 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.