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›Communications Equipment›Communications Equipment

1 · Sector

Weight and 12M allocation change

Information Technology37.8%+2.39 ppIndustrials9.6%+0.25 ppMaterials2.2%+0.06 ppUtilities2.6%-0.01 ppFinancials11.9%-0.11 ppEnergy2.3%-0.17 ppReal Estate2.1%-0.28 ppCommunication Services2.2%-0.31 ppHealth Care11.3%-0.33 ppConsumer Staples6.0%-0.70 ppConsumer Discretionary12.0%-0.78 pp

2 · Industry

Inside Information Technology

Semiconductors15.05%+2.87 ppApplication Software2.98%-0.53 ppTechnology Hardware, Storage & Peripherals8.35%-0.51 ppSemiconductor Materials & Equipment0.94%+0.37 ppCommunications Equipment1.07%+0.25 ppIT Consulting & Other Services0.99%-0.15 ppElectronic Components0.31%+0.12 ppElectronic Equipment & Instruments0.23%-0.05 ppElectronic Manufacturing Services0.18%+0.05 ppInternet Services & Infrastructure0.10%-0.04 ppTechnology Distributors0.03%-0.02 ppSystems Software7.56%+0.02 pp

3 · Sub-industry

Inside Communications Equipment

Communications Equipment1.07%+0.251 pp
Concentrated

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

View all contributions →
Communications Equipment · weight
1.07%
Industry change · 12M
+0.25 pp
Communications Equipment · contribution
+0.251 pp
Company participation
25%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2025 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Arista Networks →
ANET
United States$165.0bn0.323%-0.043 pp+0.244 pp+18.5%No
Cisco →
CSCO
United States$304.4bn0.596%+0.055 pp+0.061 pp+33.5%Yes
Motorola Solutions →
MSI
United States$63.8bn0.125%-0.027 pp-0.050 pp-16.2%No
F5, Inc. →
FFIV
United States$14.8bn0.029%-0.008 pp-0.004 pp+1.5%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.