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 Technology34.6%+6.31 ppUtilities2.9%+0.04 ppConsumer Staples7.1%+0.00 ppReal Estate2.6%-0.16 ppIndustrials9.7%-0.18 ppFinancials11.0%-0.18 ppMaterials2.6%-0.35 ppCommunication Services2.5%-0.43 ppConsumer Discretionary11.3%-1.04 ppEnergy2.5%-1.29 ppHealth Care13.5%-2.72 pp

2 · Industry

Inside Information Technology

Semiconductors11.59%+8.00 ppTechnology Hardware, Storage & Peripherals8.55%-0.69 ppSystems Software7.84%-0.38 ppApplication Software3.39%-0.31 ppCommunications Equipment0.77%-0.19 ppIT Consulting & Other Services1.18%-0.11 ppElectronic Equipment & Instruments0.30%-0.06 ppElectronic Components0.18%+0.05 ppTechnology Distributors0.07%-0.02 ppElectronic Manufacturing Services0.14%+0.01 ppInternet Services & Infrastructure0.13%+0.01 ppSemiconductor Materials & Equipment0.49%+0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.49%+0.000 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.49%
Industry change · 12M
+0.00 pp
Semiconductor Materials & Equipment · contribution
+0.000 pp
Company participation
75%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
KLA Corporation →
KLAC
United States$10.4bn0.024%+0.003 pp+0.003 pp+70.3%Yes
Lam Research →
LRCX
United States$10.6bn0.025%-0.001 pp-0.003 pp+31.5%No
Applied Materials →
AMAT
United States$166.6bn0.388%+0.021 pp+0.001 pp+47.0%Yes
Teradyne →
TER
United States$21.9bn0.051%+0.007 pp-0.001 pp+33.9%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.