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 Technology25.6%+25.56 ppHealth Care15.7%+15.64 ppIndustrials12.8%+12.82 ppConsumer Discretionary7.4%+7.37 ppConsumer Staples7.2%+7.19 ppCommunication Services4.6%+4.56 ppMaterials3.5%+3.50 ppUtilities3.1%+3.09 ppReal Estate3.1%+3.08 ppEnergy2.4%+2.35 ppFinancials14.7%-85.17 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals7.86%+7.86 ppSystems Software6.89%+6.88 ppApplication Software3.57%+3.56 ppSemiconductors3.45%+3.45 ppIT Consulting & Other Services1.29%+1.29 ppCommunications Equipment0.97%+0.97 ppSemiconductor Materials & Equipment0.58%+0.58 ppElectronic Equipment & Instruments0.41%+0.41 ppElectronic Components0.17%+0.17 ppElectronic Manufacturing Services0.16%+0.16 ppInternet Services & Infrastructure0.16%+0.16 ppTechnology Distributors0.08%+0.08 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.58%+0.581 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.58%
Industry change · 12M
+0.58 pp
Semiconductor Materials & Equipment · contribution
+0.581 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$126.2bn0.452%+0.236 pp+0.452 pp+148.3%Yes
Teradyne →
TER
United States$22.0bn0.079%+0.036 pp+0.079 pp+98.2%Yes
Lam Research →
LRCX
United States$9.3bn0.033%+0.017 pp+0.033 pp+140.5%Yes
KLA Corporation →
KLAC
United States$4.9bn0.017%+0.008 pp+0.017 pp+82.6%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.