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

Information Technology33.1%+5.29 pp Financials12.3%+0.37 pp Communication Services2.8%+0.09 pp Utilities2.9%+0.07 pp Real Estate2.5%-0.09 pp Consumer Staples7.6%-0.20 pp Materials2.3%-0.53 pp Consumer Discretionary11.5%-0.54 pp Energy2.4%-0.88 pp Industrials9.9%-0.92 pp Health Care12.6%-2.65 pp

2 · Industry

Inside Communication Services

Movies & Entertainment0.58%-0.13 pp Wireless Telecommunication Services0.67%+0.12 pp Integrated Telecommunication Services0.92%+0.09 pp Interactive Home Entertainment0.10%+0.03 pp Advertising0.04%-0.02 pp Broadcasting0.05%-0.00 pp Cable & Satellite0.41%-0.00 pp

3 · Sub-industry

Inside Wireless Telecommunication Services

Wireless Telecommunication Services0.67%+0.116 pp

Concentrated

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

View all contributions →

Wireless Telecommunication Services · weight

0.67%

Industry change · 12M

+0.12 pp

Wireless Telecommunication Services · contribution

+0.116 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

Company	Country	Market cap	Universe weight	3M contribution	12M contribution	12M price return	Above 6M weight average
T-Mobile US → TMUS	United States	$280.4bn	0.673%	+0.082 pp	+0.116 pp	+52.5%	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.