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 & Peripherals6.94%-2.37 ppSystems Software5.74%-1.60 ppSemiconductors2.61%-0.85 ppApplication Software2.56%-0.58 ppIT Consulting & Other Services0.86%-0.41 ppCommunications Equipment0.61%-0.23 ppElectronic Equipment & Instruments0.25%-0.14 ppSemiconductor Materials & Equipment0.35%-0.06 ppElectronic Components0.09%-0.05 ppElectronic Manufacturing Services0.10%-0.05 ppInternet Services & Infrastructure0.08%-0.04 ppTechnology Distributors0.05%-0.03 pp
3 · Sub-industry
Inside Semiconductor Materials & Equipment
Semiconductor Materials & Equipment · weight
0.35%
Industry change · 12M
-0.06 pp
Semiconductor Materials & Equipment · contribution
-0.064 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2023 · 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 | $127.3bn | 0.277% | -0.045 pp | -0.039 pp | +44.5% | No |
| Teradyne → TER | United States | $17.5bn | 0.038% | -0.010 pp | -0.017 pp | +12.5% | No |
| KLA Corporation → KLAC | United States | $7.1bn | 0.015% | -0.003 pp | -0.004 pp | +35.8% | No |
| Lam Research → LRCX | United States | $9.7bn | 0.021% | -0.003 pp | -0.003 pp | +45.6% | 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.