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 Software5.64%+0.82 ppTechnology Hardware, Storage & Peripherals1.76%-0.26 ppSemiconductors3.17%-0.22 ppApplication Software3.19%+0.18 ppCommunications Equipment1.46%+0.13 ppElectronic Equipment & Instruments0.29%+0.11 ppIT Consulting & Other Services1.59%-0.10 ppSemiconductor Materials & Equipment0.27%-0.04 ppInternet Services & Infrastructure0.21%+0.03 ppElectronic Components0.15%-0.03 ppElectronic Manufacturing Services0.17%-0.02 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Communications Equipment
Communications Equipment · weight
1.46%
Industry change · 12M
+0.13 pp
Communications Equipment · contribution
+0.125 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2019 · 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 | $237.2bn | 1.262% | -0.110 pp | +0.102 pp | +34.6% | No |
| Motorola Solutions → MSI | United States | $27.3bn | 0.146% | +0.013 pp | +0.031 pp | +39.0% | Yes |
| F5, Inc. → FFIV | United States | $8.8bn | 0.047% | -0.005 pp | -0.014 pp | -14.4% | No |
| Arista Networks → ANET | United States | $1.3bn | 0.007% | -0.001 pp | +0.007 pp | +6.9% | 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.