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Independent Power Producers
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
CEG icon
1
Constellation Energy
CEG
$92.1B
$92.1B $259.89 1.77%
VST icon
2
Vistra
VST
$47.5B
$47.5B $141.53 0.57%
NRG icon
3
NRG Energy
NRG
$22.3B
$22.3B $105.99 2.29%
TLN
4
Talen Energy Corp
TLN
$13.5B
$13.5B $282.15 1.53%
OKLO
5
Oklo
OKLO
$6.69B
$6.69B $35.98 0.64%
TAC icon
6
TransAlta
TAC
$3.64B
$3.64B $11.50 2.46%
KEN icon
7
Kenon Holdings
KEN
$3.23B
$3.23B $61.91 3.73%
HNRG icon
8
Hallador Energy
HNRG
$676M
$676M $14.33 1.04%
DGXX
9
Digi Power X Inc
DGXX
$365M
$365M $3.60 3.49%

Independent Power Producers Stocks at a Glance

Independent power producers own merchant generation and sell electricity into wholesale and retail markets. Unlike regulated utilities, earnings ride power prices — set by fuel costs, weather, and capacity balances — making them the leveraged, higher-beta corner of the utility space.

There are 9 Independent Power Producers industry stocks tracked by Wall St. Rank, worth a combined $190B.

The largest by market cap are Constellation Energy (CEG) at $92.1B, Vistra (VST) at $47.5B and NRG Energy (NRG) at $22.3B.

Among institutional investors, Vistra (VST) drew the most net new fund positions in Q2 2026: 227 funds opened new positions, taking total fund holders up 88 (6.7%) quarter-over-quarter.

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