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 Technology40.9%+4.04 pp Energy3.9%+1.55 pp Health Care10.6%+0.01 pp Communication Services2.3%-0.19 pp Materials2.0%-0.23 pp Real Estate1.9%-0.31 pp Industrials9.3%-0.48 pp Utilities2.2%-0.48 pp Consumer Staples5.5%-0.92 pp Consumer Discretionary10.8%-1.27 pp Financials10.5%-1.72 pp

2 · Industry

Inside Information Technology

Semiconductors17.29%+3.19 pp Technology Hardware, Storage & Peripherals8.93%+1.44 pp Application Software2.00%-1.38 pp Semiconductor Materials & Equipment1.75%+1.16 pp Systems Software7.68%-0.69 pp Communications Equipment1.54%+0.41 pp IT Consulting & Other Services0.64%-0.29 pp Electronic Components0.47%+0.21 pp Electronic Manufacturing Services0.22%+0.05 pp Internet Services & Infrastructure0.09%-0.03 pp Electronic Equipment & Instruments0.24%-0.02 pp Technology Distributors0.03%-0.01 pp

3 · Sub-industry

Inside Communications Equipment

Communications Equipment1.54%+0.412 pp

Concentrated

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

View all contributions →

Communications Equipment · weight

1.54%

Industry change · 12M

+0.41 pp

Communications Equipment · contribution

+0.412 pp

Company participation

83%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

Company	Country	Market cap	Universe weight	3M contribution	12M contribution	12M price return	Above 6M weight average
Cisco → CSCO	United States	$435.5bn	0.725%	-0.097 pp	+0.158 pp	+63.2%	Yes
Lumentum → LITE	United States	$82.1bn	0.137%	+0.021 pp	+0.137 pp	+588.8%	Yes
Ciena → CIEN	United States	$54.2bn	0.090%	-0.052 pp	+0.090 pp	+307.4%	No
Arista Networks → ANET	United States	$246.8bn	0.411%	+0.063 pp	+0.055 pp	+43.3%	Yes
Motorola Solutions → MSI	United States	$80.3bn	0.134%	+0.018 pp	-0.029 pp	+3.9%	Yes
F5, Inc. → FFIV	United States	$23.1bn	0.038%	+0.001 pp	+0.001 pp	+30.0%	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.