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 Technology29.9%+5.36 ppConsumer Discretionary12.3%+1.32 ppMaterials2.8%-0.26 ppCommunication Services2.9%-0.31 ppIndustrials9.8%-0.31 ppReal Estate2.9%-0.32 ppUtilities2.9%-0.55 ppEnergy3.3%-0.63 ppConsumer Staples6.8%-0.92 ppFinancials11.2%-1.15 ppHealth Care15.3%-2.24 pp

2 · Industry

Inside Information Technology

Systems Software9.18%+2.48 ppTechnology Hardware, Storage & Peripherals9.52%+1.23 ppApplication Software3.99%+1.12 ppSemiconductors3.68%+0.55 ppSemiconductor Materials & Equipment0.49%+0.08 ppCommunications Equipment0.87%-0.05 ppElectronic Equipment & Instruments0.35%-0.03 ppElectronic Components0.12%-0.02 ppIT Consulting & Other Services1.33%+0.02 ppElectronic Manufacturing Services0.13%-0.01 ppTechnology Distributors0.09%+0.00 ppInternet Services & Infrastructure0.12%-0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.49%+0.077 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
+0.08 pp
Semiconductor Materials & Equipment · contribution
+0.077 pp
Company participation
75%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$125.3bn0.391%-0.017 pp+0.071 pp+37.9%Yes
Lam Research →
LRCX
United States$9.4bn0.029%-0.000 pp+0.008 pp+53.6%Yes
Teradyne →
TER
United States$14.1bn0.044%-0.009 pp-0.005 pp-0.9%No
KLA Corporation →
KLAC
United States$7.4bn0.023%+0.001 pp+0.004 pp+40.2%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.