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›Energy›Oil & Gas Exploration & Production›Oil & Gas Exploration & Production

1 · Sector

Weight and 12M allocation change

Information Technology17.4%+1.34 pp Energy5.1%+0.43 pp Real Estate3.5%+0.28 pp Utilities3.4%+0.26 pp Health Care16.9%+0.12 pp Consumer Discretionary7.0%-0.03 pp Materials2.1%-0.04 pp Communication Services3.3%-0.15 pp Consumer Staples8.8%-0.60 pp Financials17.7%-0.75 pp Industrials14.7%-0.86 pp

2 · Industry

Inside Energy

Oil & Gas Exploration & Production1.51%+0.25 pp Integrated Oil & Gas1.47%+0.11 pp Oil & Gas Refining & Marketing0.80%+0.08 pp Oil & Gas Equipment & Services0.80%-0.05 pp Oil & Gas Storage & Transportation0.55%+0.04 pp

3 · Sub-industry

Inside Oil & Gas Exploration & Production

Oil & Gas Exploration & Production1.51%+0.247 pp

Concentrated

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

View all contributions →

Oil & Gas Exploration & Production · weight

1.51%

Industry change · 12M

+0.25 pp

Oil & Gas Exploration & Production · contribution

+0.247 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 2018 · 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
ConocoPhillips → COP	United States	$81.5bn	0.494%	+0.067 pp	+0.093 pp	+19.5%	Yes
Occidental Petroleum → OXY	United States	$64.1bn	0.389%	+0.084 pp	+0.062 pp	+14.0%	Yes
EOG Resources → EOG	United States	$72.0bn	0.437%	+0.063 pp	+0.058 pp	+8.4%	Yes
EQT Corporation → EQT	United States	$8.0bn	0.048%	+0.006 pp	+0.019 pp	+1.8%	Yes
Devon Energy → DVN	United States	$23.0bn	0.140%	+0.037 pp	+0.016 pp	+6.7%	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.