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 Technology33.1%+5.29 ppFinancials12.3%+0.37 ppCommunication Services2.8%+0.09 ppUtilities2.9%+0.07 ppReal Estate2.5%-0.09 ppConsumer Staples7.6%-0.20 ppMaterials2.3%-0.53 ppConsumer Discretionary11.5%-0.54 ppEnergy2.4%-0.88 ppIndustrials9.9%-0.92 ppHealth Care12.6%-2.65 pp

2 · Industry

Inside Information Technology

Semiconductors10.66%+6.47 ppSystems Software7.68%-1.10 ppApplication Software3.26%-0.33 ppCommunications Equipment1.01%+0.21 ppElectronic Components0.20%+0.07 ppInternet Services & Infrastructure0.16%+0.06 ppTechnology Hardware, Storage & Peripherals7.95%+0.06 ppElectronic Equipment & Instruments0.29%-0.04 ppTechnology Distributors0.05%-0.04 ppSemiconductor Materials & Equipment0.57%-0.02 ppElectronic Manufacturing Services0.14%-0.02 ppIT Consulting & Other Services1.16%-0.02 pp

3 · Sub-industry

Inside Communications Equipment

Communications Equipment1.01%+0.213 pp
Concentrated

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

View all contributions →
Communications Equipment · weight
1.01%
Industry change · 12M
+0.21 pp
Communications Equipment · contribution
+0.213 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Arista Networks →
ANET
United States$103.8bn0.249%+0.168 pp+0.191 pp+28.3%Yes
Motorola Solutions →
MSI
United States$73.5bn0.177%+0.002 pp+0.013 pp+31.1%Yes
F5, Inc. →
FFIV
United States$15.3bn0.037%-0.002 pp+0.008 pp+60.1%Yes
Cisco →
CSCO
United States$229.7bn0.551%+0.015 pp+0.001 pp+26.6%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.