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
Semiconductors12.14%+8.70 ppSystems Software7.51%-1.43 ppTechnology Hardware, Storage & Peripherals8.36%-1.00 ppApplication Software3.41%-0.34 ppSemiconductor Materials & Equipment0.64%+0.17 ppCommunications Equipment0.79%-0.17 ppIT Consulting & Other Services1.14%-0.15 ppElectronic Components0.19%+0.07 ppElectronic Equipment & Instruments0.29%-0.06 ppTechnology Distributors0.06%-0.03 ppElectronic Manufacturing Services0.14%+0.01 ppInternet Services & Infrastructure0.13%+0.01 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.51%
Industry change · 12M
-1.43 pp
Systems Software · contribution
-1.428 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $3021.2bn | 7.100% | +1.527 pp | -1.443 pp | +21.1% | Yes |
| Fortinet → FTNT | United States | $60.2bn | 0.141% | +0.062 pp | -0.011 pp | +37.6% | Yes |
| Palo Alto Networks → PANW | United States | $58.7bn | 0.138% | +0.044 pp | +0.010 pp | +48.3% | Yes |
| ServiceNow → NOW | United States | $38.4bn | 0.090% | +0.030 pp | +0.009 pp | +60.3% | Yes |
| Gen Digital → GEN | United States | $17.9bn | 0.042% | +0.013 pp | +0.006 pp | +78.6% | 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.