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 & Peripherals8.63%+8.63 ppSystems Software7.50%+7.49 ppApplication Software3.84%+3.84 ppSemiconductors3.43%+3.43 ppIT Consulting & Other Services1.32%+1.32 ppCommunications Equipment0.98%+0.98 ppSemiconductor Materials & Equipment0.56%+0.56 ppElectronic Equipment & Instruments0.44%+0.44 ppElectronic Manufacturing Services0.17%+0.17 ppElectronic Components0.16%+0.16 ppInternet Services & Infrastructure0.15%+0.15 ppTechnology Distributors0.09%+0.09 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
7.50%
Industry change · 12M
+7.49 pp
Systems Software · contribution
+7.494 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2021 · 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 | $2141.1bn | 7.342% | +0.458 pp | +7.334 pp | +40.3% | Yes |
| ServiceNow → NOW | United States | $23.3bn | 0.080% | +0.007 pp | +0.080 pp | +33.9% | Yes |
| Gen Digital → GEN | United States | $14.4bn | 0.049% | +0.004 pp | +0.049 pp | +18.4% | Yes |
| Fortinet → FTNT | United States | $8.9bn | 0.030% | +0.006 pp | +0.030 pp | +96.8% | 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.