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 Technology34.0%+4.14 ppFinancials12.2%+0.98 ppConsumer Staples6.9%+0.08 ppIndustrials9.8%+0.03 ppUtilities2.8%-0.10 ppCommunication Services2.6%-0.24 ppConsumer Discretionary12.0%-0.29 ppReal Estate2.5%-0.34 ppMaterials2.4%-0.46 ppEnergy2.6%-0.67 ppHealth Care12.1%-3.14 pp

2 · Industry

Inside Information Technology

Semiconductors11.55%+7.86 ppSystems Software7.39%-1.80 ppTechnology Hardware, Storage & Peripherals8.20%-1.31 ppApplication Software3.52%-0.47 ppIT Consulting & Other Services1.15%-0.18 ppSemiconductor Materials & Equipment0.59%+0.10 ppElectronic Components0.19%+0.07 ppCommunications Equipment0.81%-0.06 ppElectronic Equipment & Instruments0.30%-0.06 ppTechnology Distributors0.05%-0.04 ppInternet Services & Infrastructure0.13%+0.01 ppElectronic Manufacturing Services0.13%+0.01 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.59%+0.099 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.59%
Industry change · 12M
+0.10 pp
Semiconductor Materials & Equipment · contribution
+0.099 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2024 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Lam Research →
LRCX
United States$95.1bn0.210%+0.184 pp+0.180 pp+4.2%Yes
Applied Materials →
AMAT
United States$144.0bn0.318%-0.075 pp-0.073 pp+17.6%No
Teradyne →
TER
United States$17.9bn0.040%-0.014 pp-0.004 pp+19.8%No
KLA Corporation →
KLAC
United States$8.7bn0.019%-0.008 pp-0.004 pp+19.9%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.