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
Latest available · not live
20182026
Universe›Information Technology›Electronic Components›Electronic Components

1 · Sector

Weight and 12M allocation change

Information Technology43.1%+4.93 ppEnergy3.8%+1.55 ppHealth Care10.6%+0.26 ppMaterials1.9%-0.22 ppCommunication Services2.1%-0.27 ppReal Estate1.8%-0.35 ppIndustrials9.1%-0.58 ppUtilities2.1%-0.61 ppConsumer Staples5.4%-0.78 ppConsumer Discretionary10.3%-1.78 ppFinancials9.7%-2.16 pp

2 · Industry

Inside Information Technology

Semiconductors18.63%+3.92 ppApplication Software1.82%-1.73 ppTechnology Hardware, Storage & Peripherals9.60%+1.63 ppSemiconductor Materials & Equipment1.95%+1.21 ppCommunications Equipment1.54%+0.44 ppSystems Software7.87%-0.41 ppIT Consulting & Other Services0.61%-0.34 ppElectronic Components0.49%+0.20 ppElectronic Manufacturing Services0.22%+0.04 ppInternet Services & Infrastructure0.09%-0.02 ppTechnology Distributors0.03%-0.01 ppElectronic Equipment & Instruments0.24%-0.01 pp

3 · Sub-industry

Inside Electronic Components

Electronic Components0.49%+0.200 pp
Concentrated

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

View all contributions →
Electronic Components · weight
0.49%
Industry change · 12M
+0.20 pp
Electronic Components · contribution
+0.200 pp
Company participation
33%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2026 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Coherent Corp. →
COHR
United States$56.4bn0.095%-0.039 pp+0.095 pp+167.2%No
Corning Inc. →
GLW
United States$132.4bn0.223%-0.159 pp+0.082 pp+89.1%No
Amphenol →
APH
United States$103.9bn0.175%-0.014 pp+0.023 pp+37.2%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.