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 Technology17.9%+7.76 pp Health Care16.6%+6.64 pp Financials15.9%+6.02 pp Industrials13.4%+5.24 pp Consumer Staples9.3%+4.44 pp Communication Services5.4%+3.44 pp Real Estate4.0%+2.04 pp Utilities3.9%+2.00 pp Materials2.9%+1.73 pp Energy3.6%+0.89 pp Consumer Discretionary7.2%-40.20 pp

2 · Industry

Inside Communication Services

Movies & Entertainment1.41%+1.36 pp Integrated Telecommunication Services2.37%+1.08 pp Cable & Satellite1.07%+0.57 pp Wireless Telecommunication Services0.36%+0.36 pp Advertising0.09%+0.04 pp Interactive Home Entertainment0.08%+0.03 pp Broadcasting0.00%+0.00 pp

3 · Sub-industry

Inside Wireless Telecommunication Services

Wireless Telecommunication Services0.36%+0.363 pp

Concentrated

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

View all contributions →

Wireless Telecommunication Services · weight

0.36%

Industry change · 12M

+0.36 pp

Wireless Telecommunication Services · contribution

+0.363 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2019 · 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	$66.7bn	0.363%	+0.363 pp	+0.363 pp	+18.2%	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.