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 Software0.01%-5.29 ppApplication Software0.00%-3.29 ppSemiconductors0.00%-3.21 ppTechnology Hardware, Storage & Peripherals0.00%-1.81 ppIT Consulting & Other Services0.00%-1.65 ppCommunications Equipment0.00%-1.56 ppElectronic Equipment & Instruments0.00%-0.30 ppSemiconductor Materials & Equipment0.00%-0.24 ppInternet Services & Infrastructure0.00%-0.19 ppElectronic Components0.00%-0.17 ppElectronic Manufacturing Services0.00%-0.16 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
0.01%
Industry change · 12M
-5.29 pp
Systems Software · contribution
-5.293 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $1199.5bn | 0.006% | -5.896 pp | -5.192 pp | +35.5% | No |
| Gen Digital → GEN | United States | $11.2bn | 0.000% | -0.078 pp | -0.084 pp | +43.5% | No |
| Fortinet → FTNT | United States | $3.5bn | 0.000% | -0.018 pp | -0.016 pp | +20.5% | No |
| ServiceNow → NOW | United States | $10.9bn | 0.000% | -0.052 pp | +0.000 pp | +16.3% | 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.