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 Technology30.3%+3.46 pp Consumer Discretionary8.0%+1.23 pp Energy2.3%+0.44 pp Real Estate3.2%+0.18 pp Materials3.2%+0.02 pp Financials13.2%-0.02 pp Utilities3.0%-0.08 pp Health Care16.2%-0.17 pp Consumer Staples6.9%-1.22 pp Communication Services3.7%-1.34 pp Industrials10.0%-2.49 pp

2 · Industry

Inside Energy

Oil & Gas Exploration & Production0.77%+0.36 pp Integrated Oil & Gas0.74%+0.04 pp Oil & Gas Equipment & Services0.20%+0.02 pp Oil & Gas Refining & Marketing0.32%+0.01 pp Oil & Gas Storage & Transportation0.32%+0.00 pp

3 · Sub-industry

Inside Oil & Gas Exploration & Production

Oil & Gas Exploration & Production0.77%+0.363 pp

Concentrated

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

View all contributions →

Oil & Gas Exploration & Production · weight

0.77%

Industry change · 12M

+0.36 pp

Oil & Gas Exploration & Production · contribution

+0.363 pp

Company participation

83%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2021 · 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	$92.5bn	0.313%	+0.064 pp	+0.132 pp	+82.8%	Yes
Devon Energy → DVN	United States	$28.5bn	0.096%	+0.029 pp	+0.073 pp	+215.5%	Yes
EOG Resources → EOG	United States	$50.9bn	0.172%	+0.040 pp	+0.056 pp	+92.1%	Yes
Diamondback Energy → FANG	United States	$19.3bn	0.065%	+0.019 pp	+0.039 pp	+172.7%	Yes
APA Corporation → APA	United States	$9.4bn	0.032%	+0.007 pp	+0.032 pp	+101.3%	Yes
Occidental Petroleum → OXY	United States	$27.7bn	0.094%	+0.013 pp	+0.031 pp	+88.4%	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.