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
Semiconductors11.55%+7.86 ppSystems Software7.39%-1.80 ppTechnology Hardware, Storage & Peripherals8.20%-1.31 ppApplication Software3.52%-0.47 ppIT Consulting & Other Services1.15%-0.18 ppSemiconductor Materials & Equipment0.59%+0.10 ppElectronic Components0.19%+0.07 ppCommunications Equipment0.81%-0.06 ppElectronic Equipment & Instruments0.30%-0.06 ppTechnology Distributors0.05%-0.04 ppInternet Services & Infrastructure0.13%+0.01 ppElectronic Manufacturing Services0.13%+0.01 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.39%
Industry change · 12M
-1.80 pp
Systems Software · contribution
-1.796 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2024 · 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 | $3148.4bn | 6.947% | -0.544 pp | -1.832 pp | +12.6% | Yes |
| Fortinet → FTNT | United States | $72.9bn | 0.161% | +0.019 pp | +0.035 pp | +80.8% | Yes |
| ServiceNow → NOW | United States | $43.2bn | 0.095% | +0.010 pp | +0.008 pp | +53.0% | Yes |
| Palo Alto Networks → PANW | United States | $63.6bn | 0.140% | -0.001 pp | -0.005 pp | +31.4% | Yes |
| Gen Digital → GEN | United States | $19.0bn | 0.042% | +0.003 pp | -0.002 pp | +42.5% | 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.