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 & Peripherals8.38%+6.20 ppSystems Software7.03%-0.75 ppSemiconductor Materials & Equipment0.57%+0.28 ppCommunications Equipment0.94%-0.25 ppIT Consulting & Other Services1.33%-0.17 ppSemiconductors3.46%-0.16 ppInternet Services & Infrastructure0.15%-0.07 ppElectronic Components0.17%+0.06 ppElectronic Equipment & Instruments0.42%+0.05 ppApplication Software3.54%-0.04 ppElectronic Manufacturing Services0.16%+0.02 ppTechnology Distributors0.09%+0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.03%
Industry change · 12M
-0.75 pp
Systems Software · contribution
-0.748 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2021 · 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 | $1899.3bn | 6.883% | +2.693 pp | -0.722 pp | +42.1% | Yes |
| Gen Digital → GEN | United States | $12.6bn | 0.046% | +0.016 pp | -0.026 pp | +4.1% | Yes |
| Fortinet → FTNT | United States | $6.7bn | 0.024% | +0.013 pp | +0.003 pp | +89.6% | Yes |
| ServiceNow → NOW | United States | $20.0bn | 0.072% | +0.022 pp | -0.003 pp | +44.0% | 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.