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 Technology29.3%+4.19 ppConsumer Discretionary12.5%+1.15 ppIndustrials10.5%+0.21 ppReal Estate2.8%-0.41 ppMaterials2.8%-0.42 ppCommunication Services2.8%-0.51 ppUtilities2.6%-0.62 ppEnergy3.1%-0.63 ppConsumer Staples6.6%-0.85 ppFinancials11.6%-1.05 ppHealth Care15.5%-1.06 pp

2 · Industry

Inside Information Technology

Systems Software9.23%+2.44 ppSemiconductors4.26%+0.94 ppApplication Software3.89%+0.89 ppTechnology Hardware, Storage & Peripherals8.24%-0.26 ppIT Consulting & Other Services1.39%+0.18 ppSemiconductor Materials & Equipment0.59%+0.15 ppCommunications Equipment0.81%-0.11 ppElectronic Equipment & Instruments0.34%-0.04 ppElectronic Manufacturing Services0.18%+0.04 ppElectronic Components0.13%-0.02 ppInternet Services & Infrastructure0.10%-0.01 ppTechnology Distributors0.09%-0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.59%+0.145 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
+0.15 pp
Semiconductor Materials & Equipment · contribution
+0.145 pp
Company participation
75%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Applied Materials →
AMAT
United States$167.5bn0.480%+0.089 pp+0.135 pp+75.1%Yes
Lam Research →
LRCX
United States$12.3bn0.035%+0.006 pp+0.012 pp+95.4%Yes
Teradyne →
TER
United States$15.9bn0.045%+0.001 pp-0.010 pp+2.9%No
KLA Corporation →
KLAC
United States$9.2bn0.026%+0.003 pp+0.008 pp+81.8%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.