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
Semiconductors10.66%+6.47 ppSystems Software7.68%-1.10 ppApplication Software3.26%-0.33 ppCommunications Equipment1.01%+0.21 ppElectronic Components0.20%+0.07 ppInternet Services & Infrastructure0.16%+0.06 ppTechnology Hardware, Storage & Peripherals7.95%+0.06 ppElectronic Equipment & Instruments0.29%-0.04 ppTechnology Distributors0.05%-0.04 ppSemiconductor Materials & Equipment0.57%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppIT Consulting & Other Services1.16%-0.02 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.68%
Industry change · 12M
-1.10 pp
Systems Software · contribution
-1.099 pp
Company participation
80%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Microsoft → MSFT | United States | $2937.8bn | 7.054% | +0.194 pp | -1.326 pp | +2.3% | Yes |
| Palo Alto Networks → PANW | United States | $123.8bn | 0.297% | +0.163 pp | +0.161 pp | +28.5% | Yes |
| Fortinet → FTNT | United States | $79.8bn | 0.192% | +0.020 pp | +0.052 pp | +64.2% | Yes |
| ServiceNow → NOW | United States | $39.5bn | 0.095% | +0.002 pp | +0.013 pp | +37.7% | Yes |
| Gen Digital → GEN | United States | $15.9bn | 0.038% | +0.001 pp | +0.001 pp | +30.9% | 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.