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

Information Technology27.9%+27.90 ppHealth Care16.3%+16.24 ppIndustrials12.0%+11.94 ppConsumer Discretionary7.1%+7.11 ppConsumer Staples7.0%+6.96 ppCommunication Services4.3%+4.32 ppMaterials3.3%+3.25 ppReal Estate3.2%+3.20 ppUtilities3.1%+3.05 ppEnergy2.0%+2.04 ppFinancials13.9%-86.02 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.76%+8.76 ppSystems Software7.76%+7.75 ppApplication Software4.02%+4.02 ppSemiconductors3.50%+3.50 ppIT Consulting & Other Services1.34%+1.34 ppCommunications Equipment1.02%+1.02 ppSemiconductor Materials & Equipment0.52%+0.52 ppElectronic Equipment & Instruments0.46%+0.46 ppElectronic Manufacturing Services0.16%+0.16 ppElectronic Components0.15%+0.15 ppInternet Services & Infrastructure0.14%+0.14 ppTechnology Distributors0.09%+0.09 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.52%+0.521 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.52%
Industry change · 12M
+0.52 pp
Semiconductor Materials & Equipment · contribution
+0.521 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$122.0bn0.408%-0.044 pp+0.408 pp+121.2%Yes
Teradyne →
TER
United States$20.0bn0.067%-0.012 pp+0.067 pp+43.6%No
Lam Research →
LRCX
United States$8.6bn0.029%-0.004 pp+0.029 pp+81.8%No
KLA Corporation →
KLAC
United States$5.2bn0.017%-0.000 pp+0.017 pp+67.9%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.