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
Communications Equipment · weight
1.56%
Industry change · 12M
+0.08 pp
Communications Equipment · contribution
+0.083 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Cisco →
CSCO
United States$246.3bn1.372%+0.671 pp+0.061 pp+30.0%Yes
Motorola Solutions →
MSI
United States$23.7bn0.132%+0.069 pp+0.023 pp+34.2%Yes
F5, Inc. →
FFIV
United States$9.3bn0.052%+0.020 pp-0.010 pp-3.8%Yes
Arista Networks →
ANET
United States$1.5bn0.008%+0.005 pp+0.008 pp+18.0%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.