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 Technology30.3%+3.46 ppConsumer Discretionary8.0%+1.23 ppEnergy2.3%+0.44 ppReal Estate3.2%+0.18 ppMaterials3.2%+0.02 ppFinancials13.2%-0.02 ppUtilities3.0%-0.08 ppHealth Care16.2%-0.17 ppConsumer Staples6.9%-1.22 ppCommunication Services3.7%-1.34 ppIndustrials10.0%-2.49 pp

2 · Industry

Inside Information Technology

Systems Software8.56%+1.53 ppTechnology Hardware, Storage & Peripherals9.55%+0.61 ppSemiconductors4.03%+0.58 ppApplication Software4.20%+0.53 ppSemiconductor Materials & Equipment0.59%+0.14 ppCommunications Equipment0.98%+0.04 ppElectronic Equipment & Instruments0.46%+0.03 ppInternet Services & Infrastructure0.15%-0.02 ppElectronic Manufacturing Services0.17%+0.01 ppTechnology Distributors0.09%+0.01 ppIT Consulting & Other Services1.35%-0.01 ppElectronic Components0.15%+0.01 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.59%+0.144 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.59%
Industry change · 12M
+0.14 pp
Semiconductor Materials & Equipment · contribution
+0.144 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$132.9bn0.449%+0.041 pp+0.129 pp+79.7%Yes
Teradyne →
TER
United States$24.9bn0.084%+0.017 pp+0.006 pp+39.0%Yes
Lam Research →
LRCX
United States$9.6bn0.032%+0.004 pp+0.005 pp+51.6%Yes
KLA Corporation →
KLAC
United States$6.2bn0.021%+0.004 pp+0.004 pp+63.9%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.