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 Technology26.8%+8.71 ppMaterials3.2%-0.02 ppConsumer Discretionary6.8%-0.23 ppCommunication Services5.0%-0.29 ppHealth Care16.4%-0.39 ppReal Estate3.1%-0.54 ppConsumer Staples8.2%-0.62 ppUtilities3.0%-0.62 ppIndustrials12.5%-1.18 ppEnergy1.9%-1.53 ppFinancials13.2%-3.30 pp

2 · Industry

Inside Information Technology

Technology Hardware, Storage & Peripherals8.94%+6.99 ppSystems Software7.03%+1.06 ppApplication Software3.67%+0.52 ppCommunications Equipment0.94%-0.22 ppSemiconductors3.45%+0.22 ppElectronic Equipment & Instruments0.43%+0.14 ppSemiconductor Materials & Equipment0.44%+0.14 ppIT Consulting & Other Services1.36%-0.11 ppTechnology Distributors0.08%-0.02 ppInternet Services & Infrastructure0.17%-0.01 ppElectronic Components0.14%+0.01 ppElectronic Manufacturing Services0.16%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.44%+0.140 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.44%
Industry change · 12M
+0.14 pp
Semiconductor Materials & Equipment · contribution
+0.140 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Teradyne →
TER
United States$18.3bn0.078%+0.078 pp+0.078 pp+77.2%Yes
Applied Materials →
AMAT
United States$75.3bn0.320%+0.320 pp+0.050 pp+44.4%Yes
Lam Research →
LRCX
United States$6.5bn0.028%+0.028 pp+0.008 pp+72.7%Yes
KLA Corporation →
KLAC
United States$3.9bn0.017%+0.017 pp+0.004 pp+56.6%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.