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 Discretionary11.0%+4.09 ppEnergy3.5%+0.08 ppUtilities3.3%-0.16 ppInformation Technology27.2%-0.18 ppMaterials3.1%-0.37 ppIndustrials9.8%-0.38 ppCommunication Services3.1%-0.41 ppReal Estate3.1%-0.49 ppConsumer Staples7.7%-0.53 ppHealth Care16.9%-0.55 ppFinancials11.3%-1.10 pp

2 · Industry

Inside Information Technology

Systems Software7.98%+0.32 ppTechnology Hardware, Storage & Peripherals9.34%-0.26 ppApplication Software3.27%+0.20 ppIT Consulting & Other Services1.17%-0.19 ppSemiconductors3.32%-0.07 ppElectronic Equipment & Instruments0.37%-0.05 ppCommunications Equipment0.89%-0.05 ppSemiconductor Materials & Equipment0.41%-0.04 ppElectronic Manufacturing Services0.13%-0.02 ppInternet Services & Infrastructure0.12%-0.01 ppElectronic Components0.13%-0.01 ppTechnology Distributors0.08%-0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.41%-0.043 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.41%
Industry change · 12M
-0.04 pp
Semiconductor Materials & Equipment · contribution
-0.043 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$95.5bn0.323%+0.001 pp-0.030 pp+3.4%No
Teradyne →
TER
United States$14.3bn0.048%-0.006 pp-0.014 pp-13.0%No
KLA Corporation →
KLAC
United States$5.3bn0.018%-0.001 pp+0.001 pp+22.7%No
Lam Research →
LRCX
United States$7.0bn0.024%+0.001 pp+0.000 pp+14.2%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.