This is ForecastNest’s 7 days forecast for CEG, created 2026-09-04 22:48 UTC. The window closed 2026-09-11 22:48 UTC, when CEG closed at $284.75, down 4.7% from $298.95 when the forecast was made. It traded between $284.10 and $305.80 along the way (-5.0% to +2.3%).
Prediction window: Existing Mode 1 horizon rules apply; the stored expiry is authoritative.
Prediction time: 2026-09-04 22:48 UTC (9/4/2026, 6:48:23 PM EDT).
Valid until: 2026-09-11 22:48 UTC (9/11/2026, 6:48:23 PM EDT). Target session: 2026-09-11 (New York); Stored expiry outside regular session. Lead time to expiry: 168 elapsed hours. Timing: After close. Based on stored prediction time, not verified model execution time.
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3 of the 5 models called a direction, and 0 of those calls were right. Each model is also asked to find the price it was forecasting from when it answers, shown as the dashed line inside its box in the picture below. Every model found it accurately.
Below are the details.
| Model | Range | Move | Confidence | Price it found | Score | Result |
|---|---|---|---|---|---|---|
| GPT-5.6 Luna | $278.00–$320.00 | -7.0% to +7.0% | 75% | $298.96 | 52.4 | no call |
| Gemini 1.5 Pro | $290.00–$315.00 | -3.0% to +5.4% | 65% | $298.96 | 12.5 | wrong |
| Grok 4.5 | $275.00–$325.00 | -8.0% to +8.7% | 42% | $298.96 | 30.4 | wrong |
| DeepSeek-R1 | $284.00–$330.00 | -5.0% to +10.4% | 55% | $298.96 | 33.0 | wrong |
| claude-opus-5 (Claude Opus 5) | $282.00–$315.00 | -5.6% to +5.5% | 40% | $298.62 | 51.0 | no call |
How these models have done on CEG over 7 days
This forecast is settled and is included in the statistics below. The remaining records are forecasts created before 2026-09-04 22:48 UTC. Only settled directional calls count toward accuracy.
| Model | Asked | Still open | No call | Called up | Called down | Right |
|---|---|---|---|---|---|---|
| Gemini 1.5 Pro | 1 | — | 0 | 1 · 0 right | — | 0% (0/1) |
| Grok 4.5 | 1 | — | 0 | 1 · 0 right | — | 0% (0/1) |
| DeepSeek-R1 | 1 | — | 0 | 1 · 0 right | — | 0% (0/1) |
| GPT-5.6 Luna | 1 | — | 1 | — | — | — |
| claude-opus-5 (Claude Opus 5) | 1 | — | 1 | — | — | — |
Every published CEG forecast these models made over 7 days before this question was asked, on 2026-09-04 22:48 UTC, plus this settled forecast. Forecasts created after this question are excluded. Results reflect the settlements available when this article is generated. A day-ahead call and a week-ahead one are counted separately — they are different questions. Only settled forecasts are graded, so open + no call + up + down adds up to asked. “No call” is a range too centred on the price to be pointing anywhere. Accuracy counts only forecasts that have settled, and the count behind it is shown beside it — a single right call is not a 100% record.
What each model said
GPT-5.6 Luna
Result: no call
View full reasoning
(1) Market regime: MarketWatch reports CEG closed September 4 at $298.96, up 4.88% and substantially outperforming the S&P 500, which fell 0.38%. This confirms a strong relative-strength session, but available after-hours sources are internally inconsistent: Public.com reports a September 4 after-hours price of $285.35, while StockAnalysis and Investing.com continue to display $285.35-$286.40 as the prior-session after-hours data. I therefore use the more internally consistent September 4 regular-session close of $298.96 as the price anchor and classify data access as partial. Sources: MarketWatch, StockAnalysis, Investing.com, Public.com. ([MarketWatch][1])
(2) Technical synthesis: The technical structure has improved sharply. Investing.com showed CEG's September 4 indicators at 18:37 GMT with RSI about 71.9, MACD positive, ADX about 41.6 and all listed major moving averages in bullish configurations; the same snapshot classified the stock as technically Strong Buy but also showed several oscillators overbought. This combination indicates strong momentum with an increased probability of consolidation after the very large weekly rebound. Source: Investing.com. ([Investing.com Canada][2])
(3) Price range: For the seven-day window I estimate $278.00-$320.00. The lower side allows a sizeable retracement toward the September 2-3 trading area around $282-$290, while the upper side allows continuation toward and modestly beyond today's $298.96 close after the 4.88% surge. The range is wide because CEG's September 3 session alone covered $282.25-$296.62, and the stock has moved more than 8% over the most recent week. Sources: StockAnalysis and MarketWatch. ([StockAnalysis.com][3])
(4) Catalysts: Constellation's fundamental backdrop remains supportive: its August 6 Q2 release raised full-year adjusted operating-earnings guidance to $11.50-$12.50 per share, added 920 MW of long-term power-purchase agreements, and reported progress toward restarting the Crane Clean Energy Center in 2027. There is no new earnings release scheduled inside this seven-day window; the next major company reporting event remains farther out. Source: Constellation Energy's official investor-relations release and events calendar. ([Constellation][4])
(5) Counter-argument: The strongest bullish case is exceptional relative strength in a weak broad market combined with a strong nuclear/data-center demand narrative. The strongest bearish case is technical exhaustion: RSI above 70 indicates an overbought condition, while the September 4 rally occurred against a macro backdrop of higher interest-rate expectations and renewed geopolitical oil pressure. Reuters reported Brent crude rose 7.6% for the week to $92.68 as U.S.-Iran tensions intensified, increasing inflation and rates risk for rate-sensitive utility valuations. Sources: Investing.com and Reuters. ([Investing.com Canada][2])
(6) Confidence: Confidence is 75%. The seven-day signal is mildly bullish because price momentum, relative strength and the company's nuclear/data-center fundamentals are aligned. Confidence is held below the high-80% range because the stock is technically overbought after a sharp rally, Monday September 7 is a U.S. market holiday, and the conflicting after-hours quotations prevent a precise end-of-window price read. The longer-term signals remain mildly bullish, but the near-term path could include substantial consolidation.
Gemini 1.5 Pro
Result: wrong
View full reasoning
(1) Data sourced from financial platforms including GuruFocus and StockAnalysis confirms CEG closed the regular trading session at $298.96 on Friday, September 4, 2026, gaining 4.9% on the day. The stock traded within a daily range of $284.04 to $298.96 on elevated volume of nearly 2.9 million shares.
(2) The current market regime for CEG is characterized by a strong technical rebound from an oversold condition. Despite a challenging 2026 where the stock dropped over 20%-partly due to investor hesitation over the Calpine Corporation acquisition-momentum has recently shifted positive. This recovery is supported by management's recent decision to raise FY26 adjusted EPS guidance to $11.50-$12.50, drawing renewed institutional interest.
(3) The 7-day price range of $290.00-$315.00 reflects the stock's recent volatility and the sharp upward momentum established late in the week. The downside bound ($290.00) protects against a retest of Wednesday's breakout support, while the upside target ($315.00) accommodates a continuation of the current rally toward the next major technical resistance zone.
(4) Inside this 7-day window, primary catalysts will be broader macroeconomic data, including upcoming U.S. inflation metrics (CPI/PPI), and energy sector flows. As a major power generator, CEG's price action will remain sensitive to utility sector positioning ahead of the Federal Reserve's mid-September policy meeting.
(5) The strongest counter-argument to a continued bullish rally is valuation friction and short-term overextension. GuruFocus flags the current $298.96 price as slightly above its intrinsic GF Value estimate of $285.03. Following a near-14-point single-day surge, the stock is vulnerable to profit-taking; a hotter-than-expected inflation print next week could drag CEG back below $290.
(6) My confidence is 65%. While the technical momentum and raised EPS guidance heavily favor the bulls, forecasting a 7-day horizon for a utility stock immediately following a massive single-day spike carries moderate pullback and macro event risk.
Grok 4.5
Result: wrong
View full reasoning
(1) What you found, and where: Friday 4 Sep 2026 close was $298.96 (up 4.88% from Thursday’s $285.05), day range $284.04-$299.73, volume ~2.8M, per StockAnalysis, Motley Fool, Yahoo Finance and Stocknear. After-hours held near $298.73-$299.02. Prior closes: 3 Sep $285.05, 2 Sep $290.04. 52-week range $228.63-$412.70.
(2) The current market regime as you read it: Strong rebound session for the nuclear/utility producer, reversing the prior day’s decline and extending the short-term recovery. Price action reflects ongoing interest in carbon-free power and data-center demand themes amid a constructive broader market tone.
(3) Price range justification, with the levels and volatility you are using: Anchored to the $298.96 Friday close. Recent daily ranges of $10-15 and moderate beta support a 7-day window of roughly ±7-10%. Lower bound near $275 allows for a retest of recent support; upper bound near $325 covers extension toward earlier recovery highs. Range is modestly wider on the upside reflecting the strong session momentum.
(4) Scheduled or likely catalysts inside the window: No company-specific earnings expected in the immediate 7-day horizon (next estimated early November). Broader market direction, power-sector sentiment and any energy-policy or demand-related news remain the primary potential drivers.
(5) The strongest counter-argument, and what would invalidate your call: A sharp risk-off move or profit-taking could push CEG below $275; stronger follow-through on nuclear/AI power themes could drive a break above $325. Sustained trade outside the stated range would overturn the mild bullish lean.
(6) Why your confidence is the number it is: Live Friday close is confirmed and the session was strongly positive, yet multi-day forecasts remain subject to macro and sector noise; moderate conviction is appropriate without near-term company-specific catalysts.
DeepSeek-R1
Result: wrong
View full reasoning
(1) Current price and data sources: At the forecast window start (2026-09-04 22:48 UTC), CEG closed the regular session at $298.96, up 4.88% on the day and near the session high of $299.73. After-hours trading showed $298.45-$298.66, down approximately 0.10-0.17%. The 52-week range is $228.63-$412.70. I have anchored my range to the regular session close of $298.96.
(2) Current market regime: CEG is in a sharp recovery rally after a prolonged downtrend. The stock had fallen over 20% in 2026 and was trading below its 200-day moving average since mid-January, but has been above its 50-day moving average since late July. The September 4 rally of 4.88% was driven by strong volume of 2.79 million shares, reflecting renewed buying interest. However, the stock remains 27.6% below its 52-week high of $412.70. The company reported strong Q2 adjusted EPS of $2.55, beating consensus by 8%, and raised 2026 guidance to $11.50-$12.50 per share.
(3) Price range justification: I expect CEG to trade between $284 and $330 over the next 7-day window. The lower bound of $284 is informed by the September 4 opening price and intraday low, which now serves as a support level following the breakout. The upper bound of $330 is informed by the $321 target identified by technical analysis from the recent bullish breakout, with $330 representing the next meaningful resistance zone above the August highs. The range is asymmetric to the upside because the stock has broken out of a consolidation pattern with strong volume, and analysts maintain a consensus "Buy" rating with an average projected level of $348.30-$358.82.
(4) Scheduled catalysts inside the window: The key catalysts over the next 7 days are: (a) the continued fallout from the September 4 rally, which may attract momentum buyers; (b) progress on the Crane Clean Energy Center restart, which received FERC and NRC approvals for interconnection and fuel license amendment; (c) the $860 million sale of the Brazos Valley Energy Center to LS Power, the final divestiture required to close the $16.4 billion Calpine acquisition; and (d) broader market catalysts including PPI and CPI reports due next week, which will influence Fed policy expectations.
(5) Strongest counter-argument: The bearish case is that the rally is a short-covering bounce within a broader downtrend. CEG remains well below its 52-week high, and the stock's decline in 2026 was driven by softer profit guidance and investor nervousness regarding the expensive Calpine acquisition. Near-term overhangs remain, including softer nuclear output, integration risk from Calpine, and uncertainty around data center load growth after Texas paused new data center connections pending grid reliability reviews. A break below $284 would invalidate the bullish 7-day view and suggest a return to the $277-$280 range.
(6) Confidence rationale: My confidence is 55%, reflecting a stock with clear bullish momentum but with significant overhead resistance and integration risk from the Calpine acquisition. The 7-day window includes no major company-specific earnings (next earnings estimated for November 9, 2026), but the stock's 1.12 beta means it is moderately sensitive to broader market moves. The analyst consensus is strongly bullish-20 of 23 analysts rate it a Buy or Strong Buy-but the stock is still trading 20-30% below the average projected level, indicating that sentiment has cooled from peak levels. I am more confident in the $284-$330 range than in the precise path within it, and I acknowledge that a retest of the $284 support level or a break above $330 are both possible outcomes over the next week.
claude-opus-5 (Claude Opus 5)
Result: no call
View full reasoning
(1) What I found, and where: CEG closed Friday September 4 at $298.96, up 4.88% or $13.91, in a $284.04-$299.73 range on 2.90M shares - closing within a dollar of the session high. The after-hours print is $298.62 (-0.11%) timestamped 6:20pm EDT, roughly half an hour ahead of this 22:48 UTC baseline, and that is my anchor (stockanalysis.com). Market cap is $105.92B, trailing P/E 28.95, forward P/E 24.21, dividend $1.71 for a 0.57% yield, and the 52-week range is $228.63-$412.70, leaving the stock about 27.6% below its high. The last ten sessions have trended steadily higher: $273.43 on August 24 to $298.96 Friday, a 9.3% advance with seven up days.
(2) Current market regime: what makes Friday notable is what it happened against. August payrolls printed 162,000 versus forecasts near 55-65k, front-end Treasury yields set 52-week highs (2Y 4.374%, 5Y 4.545% per TheStreet), September rate-hike odds rose - reported at 60.2% from 49.4% by 247wallst.com, though TheStreet put the same pricing nearer 50% - and SPY still closed down 0.39%. A capital-intensive power generator with a 0.57% yield rallying 4.88% into that is not bond-proxy behavior; it is the AI-infrastructure bid, the same rotation that lifted SOXX 3% and Intel 4% while the broad tape lagged (247wallst.com). I should be explicit that this is inference: I could not confirm a single-name catalyst for Friday's move in the sources I reached, and the CEG-specific headlines I found dated to January (TD Cowen initiation, Meta nuclear agreements) and August (Q2 results), not to September 4.
(3) Price range justification: from the $298.62 anchor, CEG's realized daily standard deviation over the last ten sessions is roughly 2.2%, and the window contains only four cash sessions - Monday September 7 is Labor Day and US markets are closed. Four sessions at that sigma implies about a 4.4% envelope, which I widen toward 5.5% for the inflation print, giving $282.00 to $315.00. That band is close to symmetric - 5.6% below versus 5.5% above - and I am placing it that way on purpose rather than by default, because the 7d signal is a genuine abstention. Two forces are pulling in opposite directions with comparable weight, and I do not think the evidence supports skewing the distribution either way over four sessions.
(4) Catalysts inside the window: there is no CEG-specific scheduled event. Q2 was reported August 6 - adjusted EPS of $2.55 against $1.91 a year earlier, adjusted net income of $920M versus $599M, with full-year 2026 adjusted operating earnings guidance of $11.50-$12.50 per share, alongside 920 megawatts of newly signed 15-to-20-year power purchase agreements for 2029-2032 delivery and regulatory clearance for the Crane Clean Energy Center restart in 2027 (Yahoo Finance). Q3 lands in early November, outside this window. So the tradeable events here are macro: August CPI on Thursday September 11 at 8:30am ET, roughly ten hours before the window closes, plus PPI in the same stretch (BLS schedule via usinflationcalculator.com), and weekly claims September 10. Headline risk from a new hyperscaler power agreement is the live idiosyncratic wildcard, and it cuts upward.
(5) Strongest counter-argument and invalidation: the case against NEUTRAL is momentum - nine percent in ten sessions, a close at the day's high, and demonstrated indifference to a hawkish rate print all argue for continuation, and that is a respectable read I am declining to take. The case on the other side is that a 4.88% single-session move in a $106B name is stretched, $300 sits directly overhead as a round number, and the utility complex broadly still carries rate sensitivity that CEG has temporarily escaped rather than permanently outgrown. My abstention would look wrong if CEG clears $300 on Tuesday's open and holds it, or conversely if a hot CPI drags the whole rate-sensitive cohort down and CEG trades with its sector rather than with the AI trade - which is precisely the ambiguity the NEUTRAL is registering.
(6) Confidence justification: 40%, applied to a mostly non-directional call. The 4h and 1d signals are NEUTRAL by construction rather than judgment, since markets are shut through the weekend and again for Labor Day. The 7d NEUTRAL is a deliberate abstention: momentum and the AI-power bid genuinely offset the post-spike extension and the CPI binary, and I would rather record that than manufacture a lean. The 30d and 180d MILD BULLISH readings rest on things I can actually point to - raised full-year guidance, a contracted PPA pipeline extending to 2032, the Crane restart in 2027, and a stock still 27.6% below its 52-week high - with the honest caveat that the September 16 FOMC and a live hike debate are a headwind for anything in the utility sector, however much Friday suggested this name is currently being traded as AI infrastructure instead.
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