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 Software0.01%-5.29 ppApplication Software0.00%-3.29 ppSemiconductors0.00%-3.21 ppTechnology Hardware, Storage & Peripherals0.00%-1.81 ppIT Consulting & Other Services0.00%-1.65 ppCommunications Equipment0.00%-1.56 ppElectronic Equipment & Instruments0.00%-0.30 ppSemiconductor Materials & Equipment0.00%-0.24 ppInternet Services & Infrastructure0.00%-0.19 ppElectronic Components0.00%-0.17 ppElectronic Manufacturing Services0.00%-0.16 ppTechnology Distributors0.00%+0.00 pp
3 · Sub-industry
Inside Semiconductor Materials & Equipment
Semiconductor Materials & Equipment · weight
0.00%
Industry change · 12M
-0.24 pp
Semiconductor Materials & Equipment · contribution
-0.242 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2020 · 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 | $42.1bn | 0.000% | -0.274 pp | -0.216 pp | +17.4% | No |
| Lam Research → LRCX | United States | $3.5bn | 0.000% | -0.021 pp | -0.016 pp | +36.9% | No |
| KLA Corporation → KLAC | United States | $2.3bn | 0.000% | -0.014 pp | -0.010 pp | +23.1% | 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.