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

Financials14.2%+1.72 pp Information Technology28.5%+1.35 pp Consumer Discretionary7.8%+0.98 pp Energy2.5%+0.82 pp Materials3.2%+0.05 pp Real Estate3.2%+0.01 pp Health Care16.5%-0.40 pp Utilities3.0%-0.41 pp Communication Services3.9%-1.00 pp Consumer Staples7.0%-1.51 pp Industrials10.2%-1.61 pp

2 · Industry

Inside Energy

Oil & Gas Exploration & Production0.81%+0.49 pp Integrated Oil & Gas0.74%+0.13 pp Oil & Gas Refining & Marketing0.36%+0.09 pp Oil & Gas Equipment & Services0.23%+0.08 pp Oil & Gas Storage & Transportation0.34%+0.04 pp

3 · Sub-industry

Inside Oil & Gas Exploration & Production

Oil & Gas Exploration & Production0.81%+0.491 pp

Concentrated

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

View all contributions →

Oil & Gas Exploration & Production · weight

0.81%

Industry change · 12M

+0.49 pp

Oil & Gas Exploration & Production · contribution

+0.491 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 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	$99.7bn	0.333%	+0.074 pp	+0.188 pp	+168.3%	Yes
EOG Resources → EOG	United States	$54.0bn	0.180%	+0.035 pp	+0.086 pp	+179.5%	Yes
Devon Energy → DVN	United States	$27.1bn	0.091%	+0.031 pp	+0.074 pp	+371.0%	Yes
Occidental Petroleum → OXY	United States	$31.3bn	0.105%	+0.021 pp	+0.064 pp	+267.8%	Yes
Diamondback Energy → FANG	United States	$19.4bn	0.065%	+0.017 pp	+0.045 pp	+324.7%	Yes
APA Corporation → APA	United States	$9.9bn	0.033%	+0.009 pp	+0.033 pp	+217.9%	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.