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 & Peripherals7.26%-1.70 ppSystems Software6.16%-1.46 ppSemiconductors2.62%-0.81 ppIT Consulting & Other Services0.88%-0.52 ppApplication Software2.59%-0.50 ppCommunications Equipment0.65%-0.24 ppElectronic Equipment & Instruments0.27%-0.12 ppSemiconductor Materials & Equipment0.36%-0.05 ppElectronic Components0.10%-0.04 ppInternet Services & Infrastructure0.09%-0.04 ppElectronic Manufacturing Services0.10%-0.04 ppTechnology Distributors0.06%-0.03 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
6.16%
Industry change · 12M
-1.46 pp
Systems Software · contribution
-1.465 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 |
|---|---|---|---|---|---|---|---|
| Microsoft → MSFT | United States | $2532.1bn | 5.856% | -1.466 pp | -1.614 pp | +33.9% | No |
| Fortinet → FTNT | United States | $59.4bn | 0.137% | -0.041 pp | +0.102 pp | +33.6% | No |
| Palo Alto Networks → PANW | United States | $39.1bn | 0.090% | +0.090 pp | +0.090 pp | +55.2% | Yes |
| Gen Digital → GEN | United States | $11.9bn | 0.027% | -0.010 pp | -0.022 pp | -13.4% | No |
| ServiceNow → NOW | United States | $22.9bn | 0.053% | -0.011 pp | -0.021 pp | +18.2% | 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.