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 Equipment & Services›Oil & Gas Equipment & Services

1 · Sector

Weight and 12M allocation change

Information Technology17.1%+1.04 pp Utilities3.4%+0.20 pp Real Estate3.4%+0.14 pp Materials2.1%-0.03 pp Consumer Discretionary7.0%-0.06 pp Energy4.6%-0.08 pp Communication Services3.4%-0.08 pp Health Care16.6%-0.13 pp Consumer Staples9.1%-0.27 pp Financials18.1%-0.33 pp Industrials15.2%-0.39 pp

2 · Industry

Inside Energy

Oil & Gas Equipment & Services0.80%-0.05 pp Oil & Gas Storage & Transportation0.47%-0.03 pp Oil & Gas Refining & Marketing0.76%+0.03 pp Integrated Oil & Gas1.34%-0.02 pp Oil & Gas Exploration & Production1.25%-0.01 pp

3 · Sub-industry

Inside Oil & Gas Equipment & Services

Oil & Gas Equipment & Services0.80%-0.046 pp

Concentrated

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

View all contributions →

Oil & Gas Equipment & Services · weight

0.80%

Industry change · 12M

-0.05 pp

Oil & Gas Equipment & Services · contribution

-0.046 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 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
Schlumberger → SLB	United States	$89.7bn	0.550%	-0.031 pp	-0.031 pp	-11.3%	No
Halliburton → HAL	United States	$41.1bn	0.252%	-0.015 pp	-0.015 pp	-12.2%	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.