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 Technology34.8%+5.79 ppFinancials11.4%+0.39 ppUtilities2.9%-0.05 ppIndustrials9.8%-0.10 ppConsumer Staples7.0%-0.16 ppReal Estate2.6%-0.19 ppMaterials2.5%-0.37 ppCommunication Services2.5%-0.40 ppConsumer Discretionary11.2%-0.92 ppEnergy2.5%-1.08 ppHealth Care12.9%-2.90 pp

2 · Industry

Inside Information Technology

Semiconductors12.14%+8.70 ppSystems Software7.51%-1.43 ppTechnology Hardware, Storage & Peripherals8.36%-1.00 ppApplication Software3.41%-0.34 ppSemiconductor Materials & Equipment0.64%+0.17 ppCommunications Equipment0.79%-0.17 ppIT Consulting & Other Services1.14%-0.15 ppElectronic Components0.19%+0.07 ppElectronic Equipment & Instruments0.29%-0.06 ppTechnology Distributors0.06%-0.03 ppElectronic Manufacturing Services0.14%+0.01 ppInternet Services & Infrastructure0.13%+0.01 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.64%+0.170 pp
Concentrated

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

View all contributions →
Semiconductor Materials & Equipment · weight
0.64%
Industry change · 12M
+0.17 pp
Semiconductor Materials & Equipment · contribution
+0.170 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Lam Research →
LRCX
United States$95.7bn0.225%+0.203 pp+0.198 pp+27.6%Yes
Applied Materials →
AMAT
United States$149.7bn0.352%+0.037 pp-0.025 pp+38.2%No
Teradyne →
TER
United States$17.3bn0.041%+0.004 pp-0.003 pp+28.1%No
KLA Corporation →
KLAC
United States$8.9bn0.021%+0.001 pp-0.001 pp+43.1%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.