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 Discretionary52.2%+52.24 ppInformation Technology13.5%+13.45 ppHealth Care8.1%+8.05 ppFinancials7.4%+7.34 ppIndustrials6.6%+6.58 ppConsumer Staples3.8%+3.78 ppCommunication Services2.4%+2.43 ppMaterials1.7%+1.66 ppReal Estate1.5%+1.53 ppEnergy1.2%+1.20 ppUtilities1.7%-98.26 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals4.23%+4.22 ppSystems Software3.55%+3.55 ppSemiconductors1.93%+1.92 ppApplication Software1.77%+1.76 ppIT Consulting & Other Services0.68%+0.68 ppCommunications Equipment0.52%+0.52 ppSemiconductor Materials & Equipment0.31%+0.31 ppElectronic Equipment & Instruments0.22%+0.22 ppElectronic Manufacturing Services0.08%+0.08 ppInternet Services & Infrastructure0.08%+0.08 ppElectronic Components0.08%+0.07 ppTechnology Distributors0.05%+0.05 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.31%+0.306 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.31%
Industry change · 12M
+0.31 pp
Semiconductor Materials & Equipment · contribution
+0.306 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$122.6bn0.240%-0.080 pp+0.240 pp+195.1%No
Teradyne →
TER
United States$20.3bn0.040%-0.041 pp+0.040 pp+125.6%No
Lam Research →
LRCX
United States$8.5bn0.017%-0.011 pp+0.017 pp+151.2%No
KLA Corporation →
KLAC
United States$5.1bn0.010%-0.006 pp+0.010 pp+133.5%No

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.