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
Semiconductors11.14%+6.88 ppSystems Software7.19%-2.04 ppApplication Software3.31%-0.58 ppCommunications Equipment1.03%+0.22 ppTechnology Hardware, Storage & Peripherals8.43%+0.20 ppIT Consulting & Other Services1.20%-0.19 ppElectronic Components0.19%+0.06 ppElectronic Equipment & Instruments0.29%-0.05 ppTechnology Distributors0.05%-0.04 ppElectronic Manufacturing Services0.14%-0.04 ppInternet Services & Infrastructure0.13%+0.03 ppSemiconductor Materials & Equipment0.57%-0.02 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.19%
Industry change · 12M
-2.04 pp
Systems Software · contribution
-2.040 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2025 · 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 | $2951.2bn | 6.600% | -0.347 pp | -2.207 pp | -3.3% | No |
| Palo Alto Networks → PANW | United States | $126.1bn | 0.282% | +0.142 pp | +0.138 pp | +22.6% | Yes |
| Fortinet → FTNT | United States | $83.1bn | 0.186% | +0.025 pp | +0.035 pp | +56.3% | Yes |
| ServiceNow → NOW | United States | $38.3bn | 0.086% | -0.010 pp | -0.005 pp | +20.5% | No |
| Gen Digital → GEN | United States | $16.8bn | 0.038% | -0.004 pp | -0.002 pp | +29.6% | 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.