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Small Cap
Oil & Gas Refining & Marketing
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
WKC icon
1
World Kinect Corp
WKC
$1.85B
$1.85B $36.07 1.88%
CAPL icon
2
CrossAmerica Partners
CAPL
$828M
$828M $21.68 1.31%
APC icon
3
ARKO Petroleum
APC
$778M
$778M $16.36 1.87%
SGU icon
4
Star Group
SGU
$429M
$429M $13.09 0.61%
CLNE icon
5
Clean Energy Fuels
CLNE
$331M
$331M $1.50 0.66%

Small Cap 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 5 small cap Oil & Gas Refining & Marketing stocks — companies in the Oil & Gas Refining & Marketing industry with a market cap between $250M and $2B — worth a combined $4.21B.

The largest by market cap are World Kinect Corp (WKC) at $1.85B, CrossAmerica Partners (CAPL) at $828M and ARKO Petroleum (APC) at $778M.

Among institutional investors, World Kinect Corp (WKC) drew the most net new fund positions in Q2 2026: 66 funds opened new positions, taking total fund holders up 39 (15%) quarter-over-quarter.

  • Combined market cap: $4.21B across 5 stocks.
  • Small Cap: market cap between $250M and $2B.
  • Largest constituent: World Kinect Corp (WKC), $1.85B market cap.
  • Most net new fund positions in Q2 2026: World Kinect Corp (WKC), +39 holders.

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