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 & Peripherals5.83%-1.26 ppSemiconductors3.11%+0.43 ppApplication Software2.30%-0.31 ppIT Consulting & Other Services0.76%-0.15 ppCommunications Equipment0.54%-0.13 ppSystems Software6.16%-0.09 ppSemiconductor Materials & Equipment0.43%+0.07 ppElectronic Equipment & Instruments0.22%-0.05 ppInternet Services & Infrastructure0.06%-0.03 ppElectronic Manufacturing Services0.12%+0.02 ppElectronic Components0.10%+0.01 ppTechnology Distributors0.06%+0.00 pp
3 · Sub-industry
Inside Communications Equipment
Communications Equipment · weight
0.54%
Industry change · 12M
-0.13 pp
Communications Equipment · contribution
-0.133 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2024 · 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 | $187.3bn | 0.358% | -0.203 pp | -0.142 pp | -3.5% | No |
| Arista Networks → ANET | United States | $23.3bn | 0.045% | -0.018 pp | +0.013 pp | +78.9% | No |
| F5, Inc. → FFIV | United States | $9.9bn | 0.019% | -0.013 pp | -0.003 pp | +14.5% | No |
| Motorola Solutions → MSI | United States | $60.9bn | 0.116% | -0.041 pp | -0.000 pp | +31.0% | 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.