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 Software7.77%+2.09 ppCommunications Equipment1.20%-0.37 ppTechnology Hardware, Storage & Peripherals2.18%+0.33 ppSemiconductors3.62%+0.26 ppApplication Software3.58%+0.24 ppIT Consulting & Other Services1.49%-0.13 ppTechnology Distributors0.09%+0.09 ppElectronic Equipment & Instruments0.37%+0.07 ppElectronic Components0.11%-0.05 ppElectronic Manufacturing Services0.14%-0.04 ppSemiconductor Materials & Equipment0.29%+0.03 ppInternet Services & Infrastructure0.22%+0.02 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.77%
Industry change · 12M
+2.09 pp
Systems Software · contribution
+2.093 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2020 · 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 | $1359.0bn | 7.606% | +1.218 pp | +2.030 pp | +39.0% | Yes |
| ServiceNow → NOW | United States | $13.4bn | 0.075% | +0.012 pp | +0.075 pp | +29.5% | Yes |
| Gen Digital → GEN | United States | $12.8bn | 0.071% | -0.016 pp | -0.015 pp | +54.9% | Yes |
| Fortinet → FTNT | United States | $3.7bn | 0.021% | +0.001 pp | +0.003 pp | +15.3% | 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.