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 Software9.23%+2.44 ppSemiconductors4.26%+0.94 ppApplication Software3.89%+0.89 ppTechnology Hardware, Storage & Peripherals8.24%-0.26 ppIT Consulting & Other Services1.39%+0.18 ppSemiconductor Materials & Equipment0.59%+0.15 ppCommunications Equipment0.81%-0.11 ppElectronic Equipment & Instruments0.34%-0.04 ppElectronic Manufacturing Services0.18%+0.04 ppElectronic Components0.13%-0.02 ppInternet Services & Infrastructure0.10%-0.01 ppTechnology Distributors0.09%-0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
9.23%
Industry change · 12M
+2.44 pp
Systems Software · contribution
+2.435 pp
Company participation
80%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $3073.5bn | 8.807% | +0.027 pp | +2.280 pp | +67.2% | Yes |
| Palo Alto Networks → PANW | United States | $50.2bn | 0.144% | -0.001 pp | +0.144 pp | +64.9% | Yes |
| ServiceNow → NOW | United States | $31.6bn | 0.091% | +0.003 pp | +0.029 pp | +78.5% | Yes |
| Fortinet → FTNT | United States | $52.7bn | 0.151% | +0.025 pp | -0.013 pp | +16.3% | Yes |
| Gen Digital → GEN | United States | $13.7bn | 0.039% | -0.005 pp | -0.005 pp | +13.1% | 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.