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

Consumer Discretionary11.2%+3.78 ppEnergy3.9%+1.03 ppHealth Care16.9%+0.53 ppUtilities3.4%+0.25 ppIndustrials10.1%+0.16 ppReal Estate3.3%+0.09 ppMaterials3.3%+0.07 ppConsumer Staples7.4%+0.03 ppCommunication Services3.4%-0.27 ppFinancials12.7%-1.04 ppInformation Technology24.5%-4.63 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.16%-1.83 ppSystems Software6.57%-1.44 ppApplication Software3.04%-0.49 ppSemiconductors3.26%-0.45 ppIT Consulting & Other Services1.23%-0.16 ppSemiconductor Materials & Equipment0.42%-0.11 ppCommunications Equipment0.89%-0.08 ppElectronic Equipment & Instruments0.39%-0.03 ppElectronic Components0.14%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppInternet Services & Infrastructure0.13%-0.02 ppTechnology Distributors0.09%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.42%-0.107 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.42%
Industry change · 12M
-0.11 pp
Semiconductor Materials & Equipment · contribution
-0.107 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jan 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$94.1bn0.322%+0.053 pp-0.091 pp-18.6%Yes
Teradyne →
TER
United States$15.8bn0.054%+0.009 pp-0.010 pp-13.0%Yes
Lam Research →
LRCX
United States$6.7bn0.023%+0.004 pp-0.005 pp-14.0%Yes
KLA Corporation →
KLAC
United States$5.4bn0.019%+0.003 pp-0.001 pp+2.1%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.