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 Discretionary11.4%+4.38 ppEnergy3.6%+0.25 ppConsumer Staples7.5%+0.07 ppUtilities3.3%-0.11 ppMaterials3.1%-0.19 ppIndustrials10.0%-0.23 ppReal Estate3.1%-0.29 ppCommunication Services3.2%-0.40 ppHealth Care16.5%-0.47 ppInformation Technology27.3%-1.33 ppFinancials11.1%-1.69 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals9.19%-0.77 ppSystems Software7.60%-0.34 ppIT Consulting & Other Services1.22%-0.14 ppSemiconductor Materials & Equipment0.45%-0.05 ppApplication Software3.32%+0.04 ppInternet Services & Infrastructure0.12%-0.03 ppElectronic Equipment & Instruments0.39%-0.03 ppCommunications Equipment0.97%-0.03 ppTechnology Distributors0.09%+0.01 ppSemiconductors3.62%-0.01 ppElectronic Manufacturing Services0.14%-0.00 ppElectronic Components0.14%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.45%-0.046 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.45%
Industry change · 12M
-0.05 pp
Semiconductor Materials & Equipment · contribution
-0.046 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$103.8bn0.354%+0.058 pp-0.038 pp-5.9%Yes
Teradyne →
TER
United States$16.8bn0.057%+0.008 pp-0.007 pp-8.7%Yes
Lam Research →
LRCX
United States$7.2bn0.024%+0.004 pp-0.001 pp+0.1%Yes
KLA Corporation →
KLAC
United States$5.5bn0.019%-0.000 pp+0.000 pp+10.5%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.