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 Discretionary46.1%+39.16 ppMaterials1.8%-1.34 ppReal Estate1.7%-1.86 ppEnergy1.1%-2.06 ppUtilities1.7%-2.24 ppCommunication Services2.8%-2.38 ppInformation Technology16.1%-3.01 ppConsumer Staples4.4%-4.39 ppIndustrials6.9%-6.49 ppHealth Care9.7%-6.87 ppFinancials7.7%-8.52 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals5.52%+3.40 ppSystems Software4.28%-2.28 ppSemiconductors2.09%-1.28 ppApplication Software2.08%-1.17 ppIT Consulting & Other Services0.74%-0.74 ppCommunications Equipment0.55%-0.60 ppElectronic Equipment & Instruments0.24%-0.10 ppInternet Services & Infrastructure0.10%-0.10 ppElectronic Manufacturing Services0.10%-0.06 ppTechnology Distributors0.05%-0.05 ppElectronic Components0.08%-0.04 ppSemiconductor Materials & Equipment0.28%-0.01 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.28%-0.012 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.28%
Industry change · 12M
-0.01 pp
Semiconductor Materials & Equipment · contribution
-0.012 pp
Company participation
75%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$88.4bn0.212%-0.044 pp-0.050 pp+69.0%Yes
Teradyne →
TER
United States$18.8bn0.045%-0.024 pp+0.045 pp+72.9%No
Lam Research →
LRCX
United States$7.0bn0.017%-0.007 pp-0.005 pp+65.0%Yes
KLA Corporation →
KLAC
United States$4.3bn0.010%-0.004 pp-0.003 pp+72.0%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.