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 Technology27.2%+8.81 pp Consumer Discretionary7.5%+0.48 pp Materials3.1%-0.14 pp Communication Services5.1%-0.22 pp Real Estate2.9%-0.60 pp Utilities2.9%-0.78 pp Health Care16.1%-0.85 pp Consumer Staples7.8%-0.86 pp Industrials12.1%-1.12 pp Energy1.9%-1.68 pp Financials13.4%-3.05 pp

2 · Industry

Inside Energy

Oil & Gas Exploration & Production0.41%-0.48 pp Integrated Oil & Gas0.64%-0.48 pp Oil & Gas Refining & Marketing0.33%-0.30 pp Oil & Gas Storage & Transportation0.29%-0.24 pp Oil & Gas Equipment & Services0.19%-0.19 pp

3 · Sub-industry

Inside Oil & Gas Exploration & Production

Oil & Gas Exploration & Production0.41%-0.480 pp

Concentrated

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

View all contributions →

Oil & Gas Exploration & Production · weight

0.41%

Industry change · 12M

-0.48 pp

Oil & Gas Exploration & Production · contribution

-0.480 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 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
ConocoPhillips → COP	United States	$42.9bn	0.174%	+0.173 pp	-0.176 pp	-36.0%	Yes
EOG Resources → EOG	United States	$29.1bn	0.118%	+0.118 pp	-0.121 pp	-38.6%	Yes
Occidental Petroleum → OXY	United States	$16.1bn	0.065%	+0.065 pp	-0.115 pp	-56.6%	Yes
Diamondback Energy → FANG	United States	$7.6bn	0.031%	+0.031 pp	-0.042 pp	-46.0%	Yes
Devon Energy → DVN	United States	$6.0bn	0.024%	+0.024 pp	-0.024 pp	-35.3%	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.