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 & Peripherals1.69%+0.00 ppIT Consulting & Other Services1.74%+0.00 ppApplication Software2.79%+0.00 ppSemiconductors3.22%+0.00 ppInternet Services & Infrastructure0.13%+0.00 ppSemiconductor Materials & Equipment0.35%+0.00 ppElectronic Components0.17%+0.00 ppCommunications Equipment1.31%+0.00 ppSystems Software4.27%+0.00 ppElectronic Equipment & Instruments0.16%+0.00 ppElectronic Manufacturing Services0.21%+0.00 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
4.27%
Industry change · 12M
+0.00 pp
Systems Software · contribution
+0.000 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2018 · 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 | $731.6bn | 4.173% | +0.000 pp | +0.000 pp | +0.0% | No |
| Gen Digital → GEN | United States | $16.9bn | 0.096% | +0.000 pp | +0.000 pp | +0.0% | 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.