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
Semiconductors10.11%+6.51 ppTechnology Hardware, Storage & Peripherals8.72%-0.94 ppApplication Software3.32%-0.51 ppSystems Software7.90%-0.25 ppCommunications Equipment0.77%-0.21 ppIT Consulting & Other Services1.16%-0.13 ppElectronic Components0.18%+0.05 ppElectronic Equipment & Instruments0.30%-0.05 ppInternet Services & Infrastructure0.14%+0.02 ppTechnology Distributors0.07%-0.02 ppSemiconductor Materials & Equipment0.50%-0.01 ppElectronic Manufacturing Services0.14%+0.01 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.90%
Industry change · 12M
-0.25 pp
Systems Software · contribution
-0.248 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| Microsoft → MSFT | United States | $3100.6bn | 7.492% | +1.594 pp | -0.269 pp | +28.2% | Yes |
| Palo Alto Networks → PANW | United States | $58.7bn | 0.142% | +0.051 pp | +0.023 pp | +49.1% | Yes |
| Fortinet → FTNT | United States | $58.7bn | 0.142% | +0.055 pp | -0.009 pp | +27.4% | Yes |
| ServiceNow → NOW | United States | $35.2bn | 0.085% | +0.034 pp | +0.008 pp | +45.2% | Yes |
| Gen Digital → GEN | United States | $16.3bn | 0.039% | +0.010 pp | -0.002 pp | +33.6% | 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.