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Oil & Gas Refining & Marketing
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
MPC icon
1
Marathon Petroleum
MPC
$125B
$125B $444.73 2.83%
VLO icon
2
Valero Energy
VLO
$111B
$111B $399.66 3.92%
PSX icon
3
Phillips 66
PSX
$110B
$110B $282.83 3.37%
DINO icon
4
HF Sinclair
DINO
$19.7B
$19.7B $115 2.78%
SUN icon
5
Sunoco
SUN
$13.3B
$13.3B $70.84 0.07%
PBF icon
6
PBF Energy
PBF
$9.25B
$9.25B $78 3.26%
UGP icon
7
Ultrapar
UGP
$6.19B
$6.19B $5.81 2.68%
CVI icon
8
CVR Energy
CVI
$5.87B
$5.87B $58.37 2.73%
DK icon
9
Delek US
DK
$4.5B
$4.5B $73.57 3.47%
PARR icon
10
Par Pacific Holdings
PARR
$3.82B
$3.82B $76.24 4%
IEP icon
11
Icahn Enterprises
IEP
$3.69B
$3.69B $5.19 1.14%
DKL icon
12
Delek Logistics
DKL
$3.24B
$3.24B $56.08 1.2%
WKC icon
13
World Kinect Corp
WKC
$1.91B
$1.91B $37.34 0.35%
CAPL icon
14
CrossAmerica Partners
CAPL
$859M
$859M $22.51 0.97%
APC icon
15
ARKO Petroleum
APC
$715M
$715M $15.02 1.14%
SGU icon
16
Star Group
SGU
$424M
$424M $12.94 0.15%
CLNE icon
17
Clean Energy Fuels
CLNE
$317M
$317M $1.44 3.36%
AIOK
18
AI OKTO CORP. Common Stock
AIOK
$104M
$104M $24.17 28%
DLXY
19
Delixy Holdings
DLXY
$4.97M
$4.97M $1.52 1.94%

Oil & Gas Refining & Marketing Stocks at a Glance

Refining and marketing companies turn crude oil into fuels and sell petroleum products. Profits ride the crack spread — the gap between crude costs and product prices — so earnings can move violently, and often counter to the oil price itself.

There are 19 Oil & Gas Refining & Marketing industry stocks tracked by Wall St. Rank, worth a combined $421B.

The largest by market cap are Marathon Petroleum (MPC) at $125B, Valero Energy (VLO) at $111B and Phillips 66 (PSX) at $110B.

Among institutional investors, Valero Energy (VLO) drew the most net new fund positions in Q2 2026: 235 funds opened new positions, taking total fund holders up 109 (5.8%) quarter-over-quarter.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.