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
Technology Hardware, Storage & Peripherals7.74%-1.98 ppSystems Software6.70%-1.56 ppSemiconductors3.02%-0.87 ppApplication Software2.86%-0.87 ppSemiconductor Materials & Equipment0.39%-0.20 ppIT Consulting & Other Services1.27%-0.19 ppCommunications Equipment0.93%-0.13 ppElectronic Equipment & Instruments0.39%-0.06 ppElectronic Manufacturing Services0.13%-0.04 ppInternet Services & Infrastructure0.13%-0.02 ppElectronic Components0.14%-0.01 ppTechnology Distributors0.09%-0.00 pp
3 · Sub-industry
Inside Semiconductor Materials & Equipment
Semiconductor Materials & Equipment · weight
0.39%
Industry change · 12M
-0.20 pp
Semiconductor Materials & Equipment · contribution
-0.201 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 |
|---|---|---|---|---|---|---|---|
| Applied Materials → AMAT | United States | $82.2bn | 0.297% | +0.020 pp | -0.151 pp | -37.5% | Yes |
| Teradyne → TER | United States | $13.6bn | 0.049% | +0.003 pp | -0.036 pp | -46.3% | Yes |
| Lam Research → LRCX | United States | $5.7bn | 0.021% | +0.001 pp | -0.012 pp | -40.7% | No |
| KLA Corporation → KLAC | United States | $5.3bn | 0.019% | +0.002 pp | -0.002 pp | -11.2% | 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.