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 Technology26.2%+5.17 ppConsumer Discretionary7.6%+1.03 ppIndustrials12.5%+0.98 ppFinancials14.5%+0.40 ppMaterials3.4%+0.25 ppEnergy2.2%-0.33 ppUtilities3.2%-0.52 ppReal Estate3.1%-0.54 ppCommunication Services4.6%-0.59 ppConsumer Staples7.1%-2.07 ppHealth Care15.5%-3.78 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.38%+6.20 ppSystems Software7.03%-0.75 ppSemiconductor Materials & Equipment0.57%+0.28 ppCommunications Equipment0.94%-0.25 ppIT Consulting & Other Services1.33%-0.17 ppSemiconductors3.46%-0.16 ppInternet Services & Infrastructure0.15%-0.07 ppElectronic Components0.17%+0.06 ppElectronic Equipment & Instruments0.42%+0.05 ppApplication Software3.54%-0.04 ppElectronic Manufacturing Services0.16%+0.02 ppTechnology Distributors0.09%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.57%+0.276 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.57%
Industry change · 12M
+0.28 pp
Semiconductor Materials & Equipment · contribution
+0.276 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$121.8bn0.441%+0.230 pp+0.186 pp+170.4%Yes
Teradyne →
TER
United States$20.9bn0.076%+0.030 pp+0.076 pp+100.9%Yes
Lam Research →
LRCX
United States$8.8bn0.032%+0.015 pp+0.011 pp+146.2%Yes
KLA Corporation →
KLAC
United States$4.8bn0.018%+0.007 pp+0.003 pp+95.2%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.