Stock fact sheet · data as of
Ameren Illinois Company (AILLN): fair value, margin of safety and Wheel Score
Utilities · Regulated Electric · United States · High Growth
Is AILLN undervalued?
AILLN has a margin of safety of 43%: the stock closed at 76.49 on 16 Oct 2026 against a GLS average fair value of 133.62. 3 of the 7 valuation models that produced a number sit above the price. Our screens treat a discount this large as a strong starting point for a cash-secured put, not as a verdict - the fair value is a model output, and a wide gap can mean the models are missing something the market knows.
The 7 models disagree widely: DCF gives 10.95 while Graham Growth gives 351.30. A spread that wide means the average is sensitive to which methods you trust; the model table below shows where each one lands, and the Quote page lets you switch any of them off.
The nightly engine files AILLN under High Growth: revenue and earnings growing fast enough that the growth-based models carry the valuation.
Nine valuation models for AILLN
Each model turns the latest filed numbers into a value per share; the GLS fair value is the simple average of the ones that produce a positive number. The last two rows are shown for reference and never enter the average. The Quote page lets you switch any model off and add your own margin of safety.
| Model | Value | vs price | What it measures |
|---|---|---|---|
| DCF | 10.95 | -86% | Present value of the projected free cash flows, discounted at the cost of capital |
| Graham Number | 63.12 | -17% | The most a defensive investor pays for the earnings and book value per share |
| Graham Growth | 351.30 | +359% | Graham's growth formula: EPS × (8.5 + 2 × growth), adjusted for bond yields |
| Lynch | 153.54 | +101% | EPS × the earnings growth rate (PEG of 1), growth capped at 25% |
| GLS Growth | 216.10 | +183% | EPS compounded ten years at the blended growth rate, discounted back at 15% a year |
| 10 Cap | - | - | Owner's earnings (operating cash flow less maintenance capex) capitalised at 10%; no value tonight |
| Payback Time | - | - | Eight years of compounded free cash flow: the price at which the business pays for itself; no value tonight |
| DDM | 72.10 | -6% | Dividend discount model: next year's dividend ÷ (10% − 3% growth); needs a dividend |
| EPV | 68.24 | -11% | Earnings power value: current EPS capitalised at 9% with no growth |
| Zombie (liquidation) | -453.91 | -693% | Current assets less all liabilities, per share: the balance-sheet floor. Not in the average |
| Wall St target | 0.0000 | -100% | Analysts' average 12-month price target. Not in the average |
Quality and financial health
Financial health is average - AILLN passes 6 of the nine Piotroski tests, which passes the Sunday Scan's "6 or more" rule. The Financials tab on the Quote page shows which tests fail. The GLS Moat score is 5.8 out of 10: a ten-year record that is consistent in some of the metrics the score tracks (revenue, earnings, margins, cash flow, returns on capital) and patchy in others.
Returns on capital are high - ROIC 18.5%, ROE 18.6%, ROA 7.1% - with debt at 0.00 times equity and negative free cash flow.
The dividend yield is high at 6.41% (payout ratio 20%). A yield this size is often the market's way of pricing a risk to the payout, so the health score and cash flow matter more than usual. Revenue comes mainly from Electric 81%, Natural gas 19% (quarter Q2 FY2026).
Institutional ownership scores 5/10, insider activity 5/10 and Congressional trading 5/10 on the GLS smart-money scales.
| Piotroski F-score | 6 / 9 | ROIC | 18.5% |
|---|---|---|---|
| GLS Moat | 5.8 / 10 | ROE | 18.6% |
| Debt / equity | 0.00 | ROA | 7.1% |
| Free-cash-flow yield | -60.5% | Payout ratio | 20% |
| Institutions | 5 / 10 | Insiders · Congress | 5 · 5 / 10 |
Wheel Score 39: No options
AILLN has no listed options in the nightly snapshot, so there is nothing to sell and the stock cannot be wheeled however good the business; the Wheel Score is capped at 39 and shown as "No options" (39 here). The valuation and quality numbers still apply to owning the shares outright.
Volume runs at 0k shares a day on a market cap of $1.9B, with a beta of 0.22 - a low beta, so day-to-day moves are smaller than the market's; the Stability part of the Wheel Score gives that 9 of 20.
| Part | Points | From | |
|---|---|---|---|
| Value | 25 / 25 | 43% margin of safety | |
| Health | 13 / 20 | Piotroski 6/9 | |
| Moat | 9 / 15 | moat 5.8/10 | |
| Premium | 0 / 20 | no option data | |
| Stability | 9 / 20 | 0k shares/day, $1.9B cap, beta 0.22 |
The Wheel Score ranks ~7,400 US stocks for selling cash-secured puts and covered calls; it is updated nightly and is not a recommendation. The walkthrough lesson shows how the score fits into a trade, start to finish.
Upcoming events
No upcoming earnings date is recorded for AILLN in the nightly calendar.
Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.
Similar stocks in Regulated Electric
The 12 companies below are the closest to Ameren Illinois Company by market cap within the Regulated Electric industry, each with its own fact sheet; the Compare page puts up to eight of them side by side.
| Stock | Close | Fair value | MoS | Wheel | Mkt cap |
|---|---|---|---|---|---|
| WELPM Wisconsin Electric Power Company | 106.15 | 596.23 | +82% | 39No options | $1.9B |
| CEPU Central Puerto S.A. | 12.97 | 4,922.39 | +100% | 80Prime | $1.9B |
| AILIM Ameren Illinois Company | 75.75 | 148.34 | +49% | 39No options | $1.9B |
| AILLM Ameren Illinois Company | 78.60 | 57.56 | -37% | 32No options | $2.0B |
| AILLI Ameren Illinois Company | 79.51 | 58.15 | -37% | 31No options | $2.0B |
| WELPP Wisconsin Electric Power Company PFD 3.60% | 63.00 | 384.83 | +84% | 39No options | $2.1B |
| AILIN Ameren Illinois Company | 70.35 | 49.86 | -41% | 31No options | $1.8B |
| AILLO Ameren Illinois Company | 65.25 | 128.02 | +49% | 39No options | $1.7B |
| AILIH Ameren Illinois Company | 61.78 | 118.96 | +48% | 39No options | $1.6B |
| ELPC Companhia Paranaense de Energia | 13.68 | 37.33 | +63% | 39No options | $2.5B |
| HE Hawaiian Electric Industries, Inc. | 8.49 | 12.01 | +29% | 71Good | $1.5B |
| MGEE MGE Energy, Inc. | 71.28 | 46.85 | -52% | 50Fair | $2.7B |
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Start free See the Sunday ScanQuestions about AILLN
Is AILLN undervalued right now?
By the GLS models, yes: at 76.49 the stock is 43% below the average fair value of 133.62 (data as of 16 Oct 2026). Whether the discount is deserved is the question to research next.
What is the Wheel Score of AILLN and what does it mean?
AILLN has no listed options in our nightly snapshot, so it cannot be wheeled; its Wheel Score is capped at 39 and shown as "No options".
What is the GLS fair value for AILLN?
133.62 per share as of 16 Oct 2026 - the simple average of the 7 valuation models (out of nine: DCF, Graham Number, Graham Growth, Lynch, GLS Growth, 10 Cap, Payback Time, DDM and EPV) that produced a positive value. The models run every night on the latest filings; the Quote page lets you switch any of them off and add a margin of safety of your own.
When does Ameren Illinois Company report earnings next?
No upcoming earnings date is recorded for AILLN in our calendar as of 16 Oct 2026; the Calendars page is refreshed every morning.
Does AILLN have listed options, and how liquid are they?
No. The nightly options snapshot found no listed contracts on AILLN, so the wheel strategy cannot be run on it and the Wheel Score is capped at 39.