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 Technology27.5%+27.47 ppHealth Care16.1%+16.09 ppIndustrials11.8%+11.83 ppConsumer Discretionary7.3%+7.33 ppConsumer Staples7.0%+6.99 ppCommunication Services4.3%+4.28 ppMaterials3.2%+3.15 ppReal Estate3.1%+3.13 ppUtilities3.0%+2.99 ppEnergy2.3%+2.34 ppFinancials14.3%-85.61 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.57%+8.57 ppSystems Software7.61%+7.60 ppApplication Software3.96%+3.96 ppSemiconductors3.51%+3.51 ppIT Consulting & Other Services1.36%+1.36 ppCommunications Equipment0.99%+0.99 ppSemiconductor Materials & Equipment0.52%+0.52 ppElectronic Equipment & Instruments0.44%+0.44 ppElectronic Manufacturing Services0.16%+0.16 ppElectronic Components0.15%+0.15 ppInternet Services & Infrastructure0.14%+0.14 ppTechnology Distributors0.09%+0.09 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.52%+0.517 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.52%
Industry change · 12M
+0.52 pp
Semiconductor Materials & Equipment · contribution
+0.517 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$116.2bn0.408%-0.051 pp+0.408 pp+118.4%No
Teradyne →
TER
United States$18.0bn0.063%-0.015 pp+0.063 pp+37.8%No
Lam Research →
LRCX
United States$8.1bn0.028%-0.004 pp+0.028 pp+73.2%No
KLA Corporation →
KLAC
United States$5.1bn0.018%+0.000 pp+0.018 pp+74.9%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.