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›Utilities›Gas Utilities›Gas Utilities

1 · Sector

Weight and 12M allocation change

Information Technology27.2%+9.30 pp Health Care16.9%+0.36 pp Materials3.2%-0.04 pp Consumer Discretionary6.8%-0.33 pp Communication Services4.9%-0.41 pp Utilities3.4%-0.47 pp Consumer Staples8.5%-0.55 pp Real Estate3.2%-0.60 pp Industrials11.8%-1.61 pp Energy1.6%-1.86 pp Financials12.5%-3.80 pp

2 · Industry

Inside Utilities

Electric Utilities1.83%-0.33 pp Multi-Utilities1.29%-0.13 pp Gas Utilities0.05%-0.02 pp Independent Power Producers & Energy Traders0.10%-0.01 pp Water Utilities0.13%+0.01 pp

3 · Sub-industry

Inside Gas Utilities

Gas Utilities0.05%-0.016 pp

Concentrated

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

View all contributions →

Gas Utilities · weight

0.05%

Industry change · 12M

-0.02 pp

Gas Utilities · contribution

-0.016 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2020 · 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
Atmos Energy → ATO	United States	$11.3bn	0.054%	+0.053 pp	-0.016 pp	-16.7%	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.