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 Technology27.2%+8.81 ppConsumer Discretionary7.5%+0.48 ppMaterials3.1%-0.14 ppCommunication Services5.1%-0.22 ppReal Estate2.9%-0.60 ppUtilities2.9%-0.78 ppHealth Care16.1%-0.85 ppConsumer Staples7.8%-0.86 ppIndustrials12.1%-1.12 ppEnergy1.9%-1.68 ppFinancials13.4%-3.05 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals9.50%+7.43 ppSystems Software6.96%+0.91 ppApplication Software3.63%+0.57 ppCommunications Equipment0.93%-0.25 ppSemiconductor Materials & Equipment0.44%+0.13 ppIT Consulting & Other Services1.34%-0.11 ppElectronic Equipment & Instruments0.42%+0.08 ppSemiconductors3.42%+0.06 ppTechnology Distributors0.08%-0.02 ppInternet Services & Infrastructure0.17%-0.01 ppElectronic Manufacturing Services0.16%+0.00 ppElectronic Components0.13%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.44%+0.135 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.44%
Industry change · 12M
+0.13 pp
Semiconductor Materials & Equipment · contribution
+0.135 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Teradyne →
TER
United States$19.9bn0.081%+0.081 pp+0.081 pp+76.7%Yes
Applied Materials →
AMAT
United States$78.9bn0.319%+0.319 pp+0.045 pp+43.3%Yes
Lam Research →
LRCX
United States$6.8bn0.028%+0.028 pp+0.007 pp+64.2%Yes
KLA Corporation →
KLAC
United States$4.0bn0.016%+0.016 pp+0.002 pp+47.9%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.