Ameren Illinois Company (AILIM) fair value: what the stock is really worth
As of Oct 2, 2026: fair value of Ameren Illinois Company $72.87, price $75.75, upside -3.8%, quality 44 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.
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Ameren Illinois Company engages in the rate-regulated electric generation, transmission, and distribution business in Illinois. It also engages in the natural gas distribution business. Ameren Illinois Company was formerly known as Central Illinois Public Service Company and changed its name to Ameren Illinois Company in October 2010.
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Ameren Illinois Company engages in the rate-regulated electric generation, transmission, and distribution business in Illinois. It also engages in the natural gas distribution business. Ameren Illinois Company was formerly known as Central Illinois Public Service Company and changed its name to Ameren Illinois Company in October 2010. The company was founded in 1902 and is headquartered in Collinsville, Illinois. Ameren Illinois Company operates as a subsidiary of Ameren Corporation.
Stock analysis
Ameren Illinois Company (AILIM) currently trades at $75.75, while our model-based Fair Value estimate is $72.87, so the stock looks roughly fairly valued today (gap 4.0%).
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Valuation
Bull case: the Economic Profit group reads highest at a median of $405.87 per share, and 14 of the 14 models we run sit above the $75.75 price.
Bear case: the Dividend Discount group reads lowest at $311.82, and 0 of the 14 models stay below the price. Evidence for this calculation is medium.
Scenario range: $66.32 (bear) to $92.62 (bull), the price of $75.75 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 44/100 (below-average quality), in the Utilities sector.
Expensive Growth: The company is growing, but growth may require heavy reinvestment or weak cash conversion.
Ameren Illinois Company reported revenue of $8.8B in FY2025 versus $6.4B in FY2021, a compound +8.3%/yr. Reported net income was $1.5B in FY2025, compounding +10.1%/yr from FY2021.
Key figures
Market cap $2.0B · P/E ratio 4.3 · P/S ratio 0.70 · EPS (TTM) $17.45 · Net margin 16.5% · Return on equity 9.8% · Return on assets (EBIT) 3.8% · Operating margin 32.2%.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 48 out of 100 (medium confidence).
What moves the price
The share trades about 6% below its 52-week high and 1% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Utilities peers we cover trades at −31% fair-value upside, at −4%, AILIM screens cheaper than that median.
Fair Value models
Bear $66.32Fair Value $72.87Bull $92.62
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above is their evidence-weighted blend, not the output of a single model. Based on fiscal year 2025 figures (about 9 months old). Earnings retained since then ($13.20 per share) are deliberately not added.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds.Evidence ⓘEvidence = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.45/100
The company is growing, but growth may require heavy reinvestment or weak cash conversion.
Revenue growth 1 year
+15.4%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+3.4%
Revenue growth 5 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+8.7%
Start year 2020 (pandemic). Over 10 years: +3.7% a year
Revenue growth 28 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+3.5%
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What shareholders gained per year (last 5 years) ⓘWhat the business itself delivers per year: earnings growth per share plus the dividend yield. This is what you get IF the market keeps valuing the stock the same way: it contains no assumption about the market changing its mind. Computed per share, so buybacks count and a merger does not pass as growth. For a company that pays no dividend it is pure earnings growth per share. Period: earnings growth per share as CAGR over the last 5 reported fiscal years (annual statements), plus the current dividend yield. The start value is the median of the three years around the start, so a single crisis year (a pandemic or a write-down) does not distort the rate.
+8.8%
Earnings growth per share plus dividend.
Earnings per share, growth per year+8.8%
Dividend (yield on the price)0.0%
Pace: 5 vs 10 years ⓘTwo data points, not a trend model: earnings growth per share over the last 5 fiscal years against the last 10. Labelled "steady" when both rates are within 3 percentage points of each other, otherwise picking up or flattening. Shown only when ten years of history exist.8.8% vs 7.5%, steady
Profit margin 2020 to 2025 ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.22% → 23%
Compare Ameren Illinois Company with another stock
Price, fair value, quality and upside side by side.
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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Utilities - Regulated Electric · 153 stocks
Beats the industry median on 7/9 measures
Overall it ranks above its industry peers.
Valuation
Quality Score44 · Below median
Fair Value upside−1.5% · Above median
Profitability
Return on equity (TTM)9.8% · Below median
Return on assets3.5% · Above median
Net margin (TTM)19.9% · Top 25%
Operating margin (TTM)32.2% · Top 25%
Growth and dividend
Revenue growth13.4% · Top 25%
Balance sheet
Debt / equity0.47× · Below median
Valuation Multiplesvs Utilities - Regulated Electric median · lower = cheaper
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "Ameren Illinois Company Fair Value". https://www.fairvalue-calculator.com/stock/AILIM
Frequently asked questions
Is Ameren Illinois Company (AILIM) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of $72.87 versus a price of $75.75, about −4% upside (fairly valued).
What is the fair value of AILIM?
Our model-based fair value for Ameren Illinois Company is $72.87 (as of Sep 24, 2026), built from audited fundamentals. The current price: $75.75.
What is the quality score of AILIM?
Ameren Illinois Company has a Quality Score of 44/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Ameren Illinois Company (AILIM)?
Our model-based price target is the fair value of $72.87 (as of Sep 24, 2026) from 14 valuation models. Cautious scenario $66.32, optimistic scenario $92.62. It is a calculation from audited fundamentals, not an analyst target.
What is the Ameren Illinois Company stock forecast for 2026?
Our models put fair value at $72.87, about −4% upside versus a price of $75.75 (fairly valued). Cautious scenario $66.32, optimistic scenario $92.62. The calculation is refreshed regularly with new filings.
What is the revenue of Ameren Illinois Company (AILIM)?
Ameren Illinois Company reported trailing-twelve-month revenue of about $3.8B (latest available figure, as of Sep 24, 2026).
What is the intrinsic value of Ameren Illinois Company (AILIM)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Ameren Illinois Company it is $72.87 per share (as of Sep 24, 2026), against a price of $75.75. It is the blended result of 14 valuation models (cash flow, earnings, asset, dividend).
Is Ameren Illinois Company stock overvalued or undervalued in 2026?
As of Sep 24, 2026, AILIM trades above its calculated fair value: price $75.75, fair value $72.87, a gap of about −4% (fairly valued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of AILIM?
No. The price is what the market pays today ($75.75); the fair value is what the company's own numbers justify ($72.87). For Ameren Illinois Company the two are $2.88 per share apart. That gap is exactly why we show both numbers side by side.
How much is Ameren Illinois Company worth?
The market values Ameren Illinois Company at about $2.0B (market capitalisation, as of Sep 24, 2026). Per share that is $75.75; our models calculate a fair value of $72.87 per share.
What do the bullish and bearish scenarios say about AILIM?
Our models span a range for Ameren Illinois Company: cautious scenario $66.32, base $72.87, optimistic $92.62 per share (as of Sep 24, 2026, price $75.75). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the P/E ratio of AILIM?
Ameren Illinois Company trades at a price-to-earnings ratio of 4.3 (as of Sep 24, 2026). A P/E on its own says little: it compares the price with ONE year of profit, while our fair value of $72.87 is built from several models across several years.
How solid is the balance sheet of Ameren Illinois Company (AILIM)?
Balance-sheet figures for Ameren Illinois Company (as of Sep 24, 2026): return on equity 9.8%, debt of 0.47 per unit of equity. They feed the Quality Score of 44/100, which measures business quality independently of the share price.
How far is AILIM from its 52-week high?
Ameren Illinois Company trades at $75.75, about 6% below its 52-week high of $81.00 and 1% above the low of $74.64 (as of Oct 2, 2026). Distance from the high says nothing about value: that is what the fair value of $72.87 is for.
Which stocks are comparable to Ameren Illinois Company?
From the same area (Utilities) we also value NextEra Energy, Inc, The Southern Company, Duke Energy Corporation, American Electric Power Company, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Ameren Illinois Company stock attractive at the current price?
The data as of Sep 24, 2026: price $75.75, calculated fair value $72.87 (−4%), Quality Score 44/100, from 14 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of AILIM calculated?
We run Ameren Illinois Company through 14 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of $72.87, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 14.5 % above its aggregate fair value. Ameren Illinois Company itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Ameren Illinois Company (AILIM)?
The closing price on Oct 2, 2026 was $75.75. Our model-based fair value is $72.87, about −4% upside (fairly valued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Ameren Illinois Company right now?
The price sits close to our fair value, market and models broadly agree here, little valuation tension. The price sits in the lower half of our model range, the side with the larger margin of safety. Read the verdict with care: some models are missing inputs, so the estimate scatters more than usual.
Where does the earnings growth of Ameren Illinois Company (AILIM) come from?
Earnings per share at Ameren Illinois Company grew +7.1 % a year from 2014 to 2025. Broken into its drivers: revenue per share +2.0 %, EBIT margin +0.1 %, tax rate +4.2 %, residual (interest, one-offs) +0.6 %. The four rates multiply to the earnings growth rate, they do not add up. Start and end are three-year averages so a single exceptional year does not distort the result.
Key figures of Ameren Illinois Company
How large is the market capitalisation of Ameren Illinois Company (AILIM)?
The market capitalisation of Ameren Illinois Company is $2.0B. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of Ameren Illinois Company (AILIM)?
The price-to-sales ratio of Ameren Illinois Company is 0.70 (P/E × margin). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Ameren Illinois Company (AILIM)?
Earnings per share at Ameren Illinois Company are $17.45 (price ÷ EPS = P/E 4.3). Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Ameren Illinois Company (AILIM)?
The net margin of Ameren Illinois Company is 16.5% (fiscal year 2025). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Ameren Illinois Company (AILIM)?
The return on equity (ROE) of Ameren Illinois Company is 9.8% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Ameren Illinois Company (AILIM)?
On an EBIT basis the return on assets of Ameren Illinois Company is 3.8% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of Ameren Illinois Company (AILIM)?
The operating margin of Ameren Illinois Company is 32.2% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Ameren Illinois Company (AILIM)?
Revenue at Ameren Illinois Company is growing +13.4% versus a year earlier (3y avg +3.4%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at Ameren Illinois Company (AILIM)?
Earnings per share at Ameren Illinois Company are growing +8.3% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Ameren Illinois Company (AILIM) generate?
The free cash flow of Ameren Illinois Company is −$821M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does Ameren Illinois Company (AILIM) carry?
The net debt of Ameren Illinois Company is $19.8B (fiscal year 2025). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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Sep 24, 2026