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 & Peripherals9.07%+1.21 ppSystems Software7.47%+0.59 ppApplication Software3.05%-0.52 ppSemiconductors3.74%+0.29 ppSemiconductor Materials & Equipment0.48%-0.11 ppCommunications Equipment0.87%-0.10 ppIT Consulting & Other Services1.35%+0.06 ppInternet Services & Infrastructure0.13%-0.03 ppElectronic Components0.15%-0.02 ppElectronic Equipment & Instruments0.40%-0.02 ppElectronic Manufacturing Services0.15%-0.01 ppTechnology Distributors0.08%-0.00 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.47%
Industry change · 12M
+0.59 pp
Systems Software · contribution
+0.588 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2022 · 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 | $2033.3bn | 7.323% | -0.448 pp | +0.586 pp | +9.8% | No |
| Fortinet → FTNT | United States | $9.4bn | 0.034% | -0.004 pp | +0.008 pp | +34.6% | No |
| Gen Digital → GEN | United States | $14.1bn | 0.051% | -0.008 pp | -0.007 pp | -10.3% | No |
| ServiceNow → NOW | United States | $18.7bn | 0.067% | -0.013 pp | +0.000 pp | -1.4% | 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.