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›Communication Services›Wireless Telecommunication Services›Wireless Telecommunication Services

1 · Sector

Weight and 12M allocation change

Materials32.1%+29.08 pp Energy2.4%-0.93 pp Real Estate2.0%-1.30 pp Utilities2.1%-1.36 pp Communication Services1.9%-1.47 pp Consumer Discretionary8.6%-2.35 pp Consumer Staples4.9%-2.62 pp Industrials7.0%-2.73 pp Financials7.7%-3.97 pp Health Care10.9%-5.94 pp Information Technology20.2%-6.43 pp

2 · Industry

Inside Communication Services

Integrated Telecommunication Services0.54%-0.59 pp Movies & Entertainment0.44%-0.33 pp Wireless Telecommunication Services0.35%-0.26 pp Cable & Satellite0.43%-0.22 pp Broadcasting0.07%-0.06 pp Advertising0.04%-0.01 pp Interactive Home Entertainment0.06%+0.00 pp

3 · Sub-industry

Inside Wireless Telecommunication Services

Wireless Telecommunication Services0.35%-0.263 pp

Concentrated

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

View all contributions →

Wireless Telecommunication Services · weight

0.35%

Industry change · 12M

-0.26 pp

Wireless Telecommunication Services · contribution

-0.263 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2023 · 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
T-Mobile US → TMUS	United States	$162.1bn	0.353%	-0.230 pp	-0.263 pp	-3.7%	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.