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 Technology28.8%+2.60 pp Consumer Discretionary12.5%+1.60 pp Industrials10.0%+0.17 pp Energy3.5%-0.07 pp Materials2.9%-0.09 pp Real Estate2.9%-0.37 pp Health Care15.9%-0.60 pp Communication Services2.8%-0.63 pp Consumer Staples7.1%-0.63 pp Utilities2.9%-0.75 pp Financials10.7%-1.24 pp

2 · Industry

Inside Energy

Oil & Gas Equipment & Services0.49%+0.20 pp Integrated Oil & Gas0.96%-0.15 pp Oil & Gas Exploration & Production1.15%-0.13 pp Oil & Gas Storage & Transportation0.41%+0.02 pp Oil & Gas Refining & Marketing0.49%-0.01 pp

3 · Sub-industry

Inside Oil & Gas Equipment & Services

Oil & Gas Equipment & Services0.49%+0.203 pp

Concentrated

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

View all contributions →

Oil & Gas Equipment & Services · weight

0.49%

Industry change · 12M

+0.20 pp

Oil & Gas Equipment & Services · contribution

+0.203 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2023 · 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
Baker Hughes → BKR	United States	$36.5bn	0.116%	+0.048 pp	+0.116 pp	+46.9%	Yes
Schlumberger → SLB	United States	$83.8bn	0.267%	+0.116 pp	+0.074 pp	+57.4%	Yes
Halliburton → HAL	United States	$34.7bn	0.111%	+0.047 pp	+0.013 pp	+30.3%	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.