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

Financials14.2%+1.72 ppInformation Technology28.5%+1.35 ppConsumer Discretionary7.8%+0.98 ppEnergy2.5%+0.82 ppMaterials3.2%+0.05 ppReal Estate3.2%+0.01 ppHealth Care16.5%-0.40 ppUtilities3.0%-0.41 ppCommunication Services3.9%-1.00 ppConsumer Staples7.0%-1.51 ppIndustrials10.2%-1.61 pp

2 · Industry

Inside Information Technology

Systems Software8.50%+1.08 ppTechnology Hardware, Storage & Peripherals8.56%-0.51 ppApplication Software4.22%+0.40 ppSemiconductor Materials & Equipment0.53%+0.17 ppCommunications Equipment0.98%+0.09 ppSemiconductors3.41%+0.08 ppElectronic Equipment & Instruments0.45%+0.05 ppInternet Services & Infrastructure0.14%-0.04 ppIT Consulting & Other Services1.35%+0.02 ppElectronic Manufacturing Services0.16%+0.01 ppElectronic Components0.14%+0.00 ppTechnology Distributors0.09%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.53%+0.171 pp
Concentrated

Most of this industry's gains came from a few companies.

View all contributions →
Semiconductor Materials & Equipment · weight
0.53%
Industry change · 12M
+0.17 pp
Semiconductor Materials & Equipment · contribution
+0.171 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$123.4bn0.412%-0.026 pp+0.156 pp+132.7%No
Teradyne →
TER
United States$22.8bn0.076%+0.004 pp+0.007 pp+57.9%Yes
KLA Corporation →
KLAC
United States$5.7bn0.019%+0.001 pp+0.004 pp+91.5%Yes
Lam Research →
LRCX
United States$7.9bn0.027%-0.005 pp+0.003 pp+66.3%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.