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 Discretionary53.6%+53.57 ppInformation Technology13.3%+13.32 ppHealth Care7.9%+7.89 ppFinancials7.2%+7.19 ppIndustrials6.2%+6.17 ppConsumer Staples3.6%+3.57 ppCommunication Services2.4%+2.43 ppMaterials1.6%+1.59 ppReal Estate1.5%+1.47 ppEnergy1.2%+1.18 ppUtilities1.5%-98.38 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals4.28%+4.27 ppSystems Software3.58%+3.57 ppSemiconductors1.83%+1.83 ppApplication Software1.78%+1.78 ppIT Consulting & Other Services0.63%+0.63 ppCommunications Equipment0.46%+0.46 ppSemiconductor Materials & Equipment0.29%+0.29 ppElectronic Equipment & Instruments0.21%+0.21 ppElectronic Manufacturing Services0.09%+0.09 ppInternet Services & Infrastructure0.07%+0.07 ppElectronic Components0.07%+0.07 ppTechnology Distributors0.04%+0.04 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.29%+0.285 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.29%
Industry change · 12M
+0.29 pp
Semiconductor Materials & Equipment · contribution
+0.285 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$108.5bn0.217%-0.103 pp+0.217 pp+105.8%No
Teradyne →
TER
United States$21.4bn0.043%-0.035 pp+0.043 pp+119.8%No
Lam Research →
LRCX
United States$8.1bn0.016%-0.011 pp+0.016 pp+96.5%No
KLA Corporation →
KLAC
United States$4.8bn0.010%-0.007 pp+0.010 pp+105.7%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.