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 Software6.41%-2.09 ppApplication Software2.90%-1.33 ppSemiconductors2.86%-0.55 ppTechnology Hardware, Storage & Peripherals8.94%+0.38 ppSemiconductor Materials & Equipment0.35%-0.18 ppCommunications Equipment0.87%-0.11 ppIT Consulting & Other Services1.28%-0.07 ppElectronic Equipment & Instruments0.38%-0.06 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.01 ppElectronic Components0.14%-0.00 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
6.41%
Industry change · 12M
-2.09 pp
Systems Software · contribution
-2.089 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2022 · 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 | $1730.4bn | 6.141% | -1.054 pp | -2.176 pp | -29.4% | No |
| Fortinet → FTNT | United States | $45.1bn | 0.160% | +0.127 pp | +0.123 pp | -15.0% | Yes |
| ServiceNow → NOW | United States | $17.0bn | 0.060% | -0.001 pp | -0.032 pp | -39.7% | No |
| Gen Digital → GEN | United States | $12.9bn | 0.046% | -0.003 pp | -0.004 pp | -9.7% | 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.