Vistra Corp. (VST)

Vistra is a large US power generator and retail electricity provider with roughly 41 GW of nuclear, natural gas, coal and renewable capacity, concentrated in Texas (ERCOT) and the mid Atlantic/Northeast (PJM). Classification is CYCLICAL per the deterministic screen, reflecting a multi-decade history as a merchant generator, but the business mix has shifted meaningfully since the 2023-2024 Energy Harbor nuclear merger and the 2026 Meta/AWS contracts and pending Cogentrix gas fleet purchase.

FY2025 revenue was $17,738 million (up from $14,761 million in 2024). GAAP net income was $944 million, EPS $2.18, down sharply from FY2024's $7.00 EPS, but the decline is mostly an $808 million unrealized, non-cash hedge loss, not an operating deterioration; Ongoing Operations Adjusted EBITDA actually rose to $5,912 million from $5,643 million. Q1 2026 flipped the pattern: net income of $1,029 million included a $723 million unrealized hedge gain, on revenue of $5.64 billion (versus $3.93 billion in Q1 2025) and Adjusted EBITDA of $1,494 million, a Q1 record.

FY2025 operating cash flow was $4,070 million; capital expenditures were $2,752 million, up every year since 2020 ($1,259M in 2020). Standardized free cash flow (OCF minus capex minus $113 million of stock compensation) was $1,205 million, matching the deterministic input exactly. Vistra's own non-GAAP metric, Adjusted FCF before growth capital, was $3,592 million for 2025, a much larger figure because it excludes growth-related capital spending; 2026 guidance for that metric is $3.925 to $4.725 billion. Q1 2026 alone had $1,199 million of operating cash flow against $883 million of capex.

The deterministic screen found no valid peer set (gate G4) and fell back to a 100% single-method intrinsic value built on a 10-year median historical price to earnings ratio (13.56x). That method predates Vistra's current nuclear fleet and contracted-growth profile and likely understates fair value materially. Using public data instead: Vistra trades around 10x forward EV/EBITDA versus about 13x for Constellation Energy (CEG), the most contracted, least indebted nuclear peer; Vistra carries about $19.3 billion of net debt versus CEG's roughly $5.9 billion. This discount is a reasonable reflection of Vistra's higher leverage and larger merchant (uncontracted) earnings share, not an anomaly to be arbitraged away.

The dominant macro driver is data center and AI-related electricity demand, which pushed PJM's 2026/2027 capacity auction to the FERC-approved cap of $329.17/MW-day, up from $28.92 two delivery years earlier. That price surge is politically contentious: household bills in PJM territory are projected to rise about $70/month by 2028, and a temporary price cap (from a Pennsylvania governor-brokered settlement) is due to expire after the most recent auction. Rates (10-year Treasury near 4.56%) and elevated beta (1.409) also raise the discount rate applied to Vistra's cash flows.

Catalysts: Cogentrix close (H2 2026), further PJM/ERCOT auction results, 2027 guidance firming as Meta/AWS contracts ramp, further Helix-related contracts. Risks: reinstated or tightened capacity price caps, integration and leverage risk from Cogentrix, continued high growth capex suppressing standardized free cash flow, and the non-cash hedge accounting that makes reported EPS volatile and headline P/E unreliable quarter to quarter.

Fear vs. Hope

Both. Hope centers on data centers and AI computing needing far more electricity than the grid can currently supply, with Vistra's nuclear and gas fleet positioned to capture that; fear centers on political backlash over rising household electricity bills (tied to the same capacity price increases) and on the debt Vistra has taken on to fund its next round of growth. The stock has swung from an all-time closing high of 217.32 on September 22, 2025 down to a 52-week low near 132.66 and back to the high 150s, which reflects that tug of war rather than a one-way story.

Is It Priced Correctly?

Roughly, for the near term. The current price implies an enterprise value to EBITDA multiple close to where the stock has recently traded (around 10x forward, versus about 13x for its most contracted nuclear peer, Constellation Energy), which is consistent with 2026 guidance being on track. The multi-year upside from the Meta and AWS power contracts (ramping from 2027), the pending gas fleet purchase, and the new Helix data center power venture is only partially reflected, offset by the unresolved question of whether a capacity price cap gets reinstated.

Inflection Signals

Yes. Vistra has gone from a primarily merchant, cyclical power generator to a company with a growing base of long-term contracted revenue (20-year deals with Meta and Amazon Web Services on its nuclear sites, a preferred-provider role in a new multi-billion dollar data center venture, an investment-grade credit rating from two agencies as of 2026), which is a genuine change in earnings quality, not just a cyclical high point.

Reverse-DCF Reality Check

The deterministic screen's implied long-run growth rate is roughly 20% a year. Vistra's own trailing 3-year revenue growth is only about 4% a year, and neither Vistra nor, to public knowledge, any US power generator of comparable size has sustained 20% annual revenue growth for 5 straight years; even the most AI-exposed nuclear peer guides to high single or low double-digit annual growth. The 2025-to-2026 step-up in guided earnings (roughly 20% at the midpoint) is achievable because 2026 power volumes are already about 98% hedged, but repeating that pace for 5 years running has no precedent in this industry and depends on the full data-center buildout thesis playing out with few setbacks.

Unpriced Optionality

The Helix Digital Infrastructure venture (over $10 billion, with KKR, the Kuwait Investment Authority and Nvidia) names Vistra as preferred power provider for future hyperscale data centers but is not yet reflected in 2026 or 2027 guidance. Further nuclear plant life extensions or output increases beyond the six reactors already relicensed, and a possible re-rating of the stock's earnings multiple toward its most contracted nuclear peer if more of its revenue becomes contracted rather than merchant, are also not fully priced.

Disconfirming Evidence

• A temporary cap on PJM capacity auction prices (from a settlement involving the Pennsylvania governor) is due to expire after the most recent auction; if regulators extend or tighten it in response to well-documented household bill increases tied to data center demand, the capacity revenue driving much of the 2025-to-2026 earnings growth could shrink.
• Full-year 2025 GAAP net income of $944 million included an $808 million unrealized, non-cash loss on hedging contracts, while first-quarter 2026 net income of $1,029 million included a $723 million unrealized, non-cash gain; reported earnings and the trailing price-to-earnings ratio swing sharply from these accounting items rather than from the underlying business.
• Net debt is about $19.3 billion, or 2.84 times trailing earnings before interest, taxes, depreciation and amortization, after new borrowing to help fund the pending natural gas fleet purchase; this is within the company's own long-term target but leaves less room to absorb a downside scenario than a less indebted peer.
• Standardized free cash flow (operating cash flow minus all capital spending and stock-based compensation) was only about $1.2 billion in 2025, well below headline growth-story impressions, because capital spending has risen every year since 2020 and is set to rise further as new gas plants are added; this spending is not easily reversible if demand growth disappoints.
• Several recent insider transactions were sales by a senior finance officer and multiple directors, mostly under pre-arranged trading plans; no material open-market insider buying was found over the same period, a mildly negative signal with the stock trading well above its 2024 levels.

Falsification Condition

If PJM extends or tightens the capacity price cap for the 2027/2028 delivery year or later (rather than letting it expire as scheduled), or if a subsequent capacity auction clears meaningfully below the roughly $330 per megawatt-day cap that has applied recently, that would falsify the thesis that AI-driven demand has structurally re-rated capacity value, and the bear case should be revisited.

Catalyst Horizon

Next 2 to 4 quarters: closing of the pending natural gas fleet purchase (expected in the second half of 2026) and the outcome of the next PJM capacity auction, including whether the price cap is extended. 2027 and beyond: the start of revenue from the Meta and Amazon Web Services power contracts and firming of 2027 to 2028 earnings guidance, which the company has so far only sketched as an opportunity range.

Segments

Strongest: the East segment (PJM grid, home to most of Vistra's nuclear fleet), which generated $2,282 million of 2025 segment earnings, about 39% of the company total, and $801 million of $1,494 million in the first quarter of 2026; this segment carries the Meta and AWS contract optionality. Weakest: the West segment, just $244 million of 2025 segment earnings (about 4% of the total) and $56 million in the first quarter of 2026, a small, low-growth piece of the portfolio.

KPI Pack

• generation_hedge_2026: About 98% of expected 2026 generation volumes hedged as of May 1, 2026; UNAVAILABLE precise same-point prior-year figure for direct comparison, but broadly similar in pattern to peer Constellation Energy's typically high hedge ratios
• net_debt_to_ebitda: 2.84x as of the most recent quarter (2026), versus the company's own long-term target of under 3x; its most contracted nuclear peer, Constellation Energy, carries roughly 1x on a much smaller debt base (about $5.9 billion), so Vistra runs meaningfully more leverage than its highest-quality peer
• forward_ev_ebitda: About 10x forward for Vistra versus about 13x for Constellation Energy as of May 2026, a discount consistent with Vistra's higher leverage and larger share of still-merchant (uncontracted) earnings
• share_count_reduction: Diluted shares outstanding fell from about 490 million (2019) to about 338 million (2025), a roughly 31% reduction, funded by about $6.3 billion of buybacks since November 2021, with $1.5 billion of authorization remaining through 2027; UNAVAILABLE a like-for-like peer buyback comparison in this pack

• FY2025 revenue was $17,738 million (PRNewswire, Feb 26, 2026), up from $14,761 million in 2024; net income was $944 million, including an $808 million unrealized non-cash hedge loss.
• Q1 2026 net income was $1,029 million, including a $723 million unrealized non-cash hedge gain, on operating revenues of $5.64 billion versus $3.93 billion in Q1 2025 (PRNewswire, May 7, 2026).
• 2026 guidance (reaffirmed May 7, 2026): Ongoing Operations Adjusted EBITDA $6.8 to $7.6 billion; Adjusted free cash flow before growth $3.925 to $4.725 billion.
• As of May 1, 2026, Vistra had hedged about 98% of expected 2026 generation volumes, about 89% of 2027, and about 65% of 2028.
• PJM's 2026/2027 Base Residual Auction cleared at the FERC-approved cap of $329.17 per megawatt-day; Vistra cleared about 10,314 MW at that price (PJM, Dec 17, 2025).
• In January 2026, Vistra agreed to acquire a 5,500 MW natural gas generation portfolio (Cogentrix) for about $4.7 billion (roughly $2.3 billion cash, $900 million stock, $1.5 billion assumed debt, net of about $700 million in tax benefits), expected to close in the second half of 2026.
• In early 2026, Vistra signed 20-year power purchase agreements with Meta and Amazon Web Services totaling roughly 2,600 to 3,800 MW at its PJM nuclear sites, with contributions beginning in 2027.
• Vistra, alongside KKR, the Kuwait Investment Authority and Nvidia, launched Helix Digital Infrastructure, a data center venture valued at over $10 billion, naming Vistra preferred power provider for hyperscale facilities.
• Net debt was about $19.3 billion, or 2.84x trailing EBITDA, as of Q1 2026; both S&P and Fitch upgraded Vistra to investment grade during the period.
• Vistra has repurchased about $6.3 billion of stock since November 2021, cutting diluted shares outstanding from about 490 million (2019) to about 338 million (2025), with $1.5 billion of buyback authorization remaining through 2027.