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 Technology41.0%+4.61 pp Industrials10.3%+0.34 pp Energy2.4%+0.09 pp Materials2.1%-0.14 pp Utilities2.5%-0.22 pp Real Estate2.0%-0.28 pp Consumer Discretionary11.2%-0.41 pp Health Care10.4%-0.48 pp Communication Services2.2%-0.51 pp Consumer Staples5.7%-1.01 pp Financials10.3%-1.99 pp

2 · Industry

Inside Information Technology

Semiconductors18.72%+5.18 pp Systems Software5.78%-2.86 pp Technology Hardware, Storage & Peripherals8.95%+2.01 pp Application Software1.78%-1.78 pp Semiconductor Materials & Equipment2.20%+1.56 pp Communications Equipment1.57%+0.52 pp IT Consulting & Other Services0.64%-0.51 pp Electronic Components0.70%+0.48 pp Electronic Manufacturing Services0.28%+0.12 pp Internet Services & Infrastructure0.09%-0.05 pp Electronic Equipment & Instruments0.24%-0.04 pp Technology Distributors0.03%-0.02 pp

3 · Sub-industry

Inside Communications Equipment

Communications Equipment1.57%+0.516 pp

Concentrated

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

View all contributions →

Communications Equipment · weight

1.57%

Industry change · 12M

+0.52 pp

Communications Equipment · contribution

+0.516 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 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	$463.0bn	0.804%	+0.358 pp	+0.212 pp	+73.2%	Yes
Ciena → CIEN	United States	$69.4bn	0.121%	+0.041 pp	+0.121 pp	+503.2%	Yes
Lumentum → LITE	United States	$66.8bn	0.116%	+0.043 pp	+0.116 pp	+802.7%	Yes
Arista Networks → ANET	United States	$213.9bn	0.372%	+0.147 pp	+0.095 pp	+66.0%	Yes
Motorola Solutions → MSI	United States	$68.9bn	0.120%	+0.015 pp	-0.032 pp	-0.1%	Yes
F5, Inc. → FFIV	United States	$23.5bn	0.041%	+0.017 pp	+0.004 pp	+41.3%	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.