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
Universe›Information Technology›Semiconductor Materials & Equipment›Semiconductor Materials & Equipment
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Information Technology
Systems Software5.64%+0.82 ppTechnology Hardware, Storage & Peripherals1.76%-0.26 ppSemiconductors3.17%-0.22 ppApplication Software3.19%+0.18 ppCommunications Equipment1.46%+0.13 ppElectronic Equipment & Instruments0.29%+0.11 ppIT Consulting & Other Services1.59%-0.10 ppSemiconductor Materials & Equipment0.27%-0.04 ppInternet Services & Infrastructure0.21%+0.03 ppElectronic Components0.15%-0.03 ppElectronic Manufacturing Services0.17%-0.02 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductor Materials & Equipment
Semiconductor Materials & Equipment · weight
0.27%
Industry change · 12M
-0.04 pp
Semiconductor Materials & Equipment · contribution
-0.041 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2019 · 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 |
|---|---|---|---|---|---|---|---|
| Applied Materials → AMAT | United States | $46.2bn | 0.246% | +0.013 pp | -0.040 pp | +3.6% | Yes |
| Lam Research → LRCX | United States | $3.1bn | 0.017% | -0.001 pp | -0.002 pp | +12.3% | Yes |
| KLA Corporation → KLAC | United States | $2.2bn | 0.012% | +0.001 pp | +0.001 pp | +19.5% | 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.