Ameren Illinois Company (AILLM) Fair Value & Analysis
Utilities · US · Market cap $2.0B
Ameren Illinois Company
AILLM · US
Fair value as of: Jul 14, 2026
From 14 valuation models · updated today
Fair value updated Jul 14, 2026 — revised from $806.04 to $102.83 (−87.2%) since Jun 24, 2026.
Price vs Fair Value (12 months)
12‑month range $61.96 – $92.17 · fair‑value band $71.98 – $133.68 · the $78.72 price screens below the $102.83 fair value. As of Jul 14, 2026.
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Ameren Illinois Company (AILLM) currently trades at $78.72, while our model-based Fair Value estimate is $102.83 — implying the stock looks roughly 30.6% undervalued today. We read business quality at 49/100 (below-average quality), in the Utilities sector. Bull case: trading below our estimate, it may offer upside if the fundamentals hold. Bear case: a low price can be a value trap when quality is weak or the data is thin (evidence: medium) — always confirm before acting.
Over the trailing twelve months, Ameren Illinois Company generated revenue of $3.8B at a net margin of 19.9%. Revenue grew 13.4% year over year. It earns a return on equity of 9.8%. Net debt stands at $19.8B. Fundamentals as of Jul 14, 2026
Our scenario range runs from $71.98 (bear case) to $133.68 (bull case); at $78.72, the current price sits within that range. The share trades about 3% below its 52-week high and 18% above its 52-week low, currently below its 200-day average. For context, the median of 10 Utilities peers we cover trades at -37% fair-value upside — at 31%, AILLM screens cheaper than that median.
Key figures & financial health
More key figures
Figures from reported company fundamentals (EODHD) · as of Jul 14, 2026. TTM = trailing twelve months.
About the company
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.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
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.
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10 more Utilities - Regulated Electric stocks, each showing price versus our Fair Value estimate (as of Jul 14, 2026).
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| Dominion Energy, Inc D | $66.77 | $48.26 | -28% |
| Entergy Corporation ETR | $110.48 | $39.57 | -64% |
| Xcel Energy Inc X1EL34 | R$201.47 | R$91.57 | -55% |
| Exelon Corporation E1XC34 | R$232.84 | R$74.72 | -68% |
| Endesa, S.A ELEZY | $22.33 | $15.08 | -32% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data — nothing guessed.
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Not financial advice · no buy/sell recommendation. Model-based estimates are not certainties; their reliability depends on data quality and assumptions.