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 Technology29.1%+12.97 ppHealth Care16.4%+6.67 ppFinancials13.7%+6.01 ppIndustrials10.0%+3.06 ppConsumer Staples7.4%+3.04 ppEnergy2.8%+1.70 ppReal Estate3.2%+1.49 ppUtilities3.1%+1.42 ppMaterials3.2%+1.41 ppCommunication Services3.7%+0.84 ppConsumer Discretionary7.5%-38.63 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals9.98%+4.46 ppSystems Software8.00%+3.72 ppSemiconductors3.71%+1.62 ppApplication Software3.54%+1.45 ppIT Consulting & Other Services1.39%+0.65 ppCommunications Equipment0.97%+0.42 ppSemiconductor Materials & Equipment0.52%+0.24 ppElectronic Equipment & Instruments0.42%+0.17 ppElectronic Components0.16%+0.08 ppElectronic Manufacturing Services0.16%+0.06 ppInternet Services & Infrastructure0.14%+0.05 ppTechnology Distributors0.09%+0.04 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.52%+0.241 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
+0.24 pp
Semiconductor Materials & Equipment · contribution
+0.241 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jan 2022 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$122.8bn0.413%+0.001 pp+0.201 pp+43.9%No
Teradyne →
TER
United States$19.1bn0.064%-0.012 pp+0.019 pp+3.8%No
Lam Research →
LRCX
United States$8.3bn0.028%+0.001 pp+0.011 pp+23.0%No
KLA Corporation →
KLAC
United States$5.9bn0.020%+0.001 pp+0.009 pp+40.6%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.