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Forensic Analysis · Electric Utilities · as of Nov 9, 2026

Otter Tail Corp (OTTR)

A forensic read on Otter Tail Corp built from its complete SEC filings — financial-health screens, earnings quality, red flags and a price-aware rating. Reproducible math, not opinion.

B · Sound & dependable
Forensic grade
Clean
Earnings quality
1
Forensic signals
15.6%
ROE
-2.3%
Revenue growth

This free snapshot doesn't read filing or proxy text, so the auditor-quality and governance checks that can lower a grade were not evaluated (auditor quality, say on pay, board independence, going concern). Those checks only ever lower a grade, so the full analysis can land below the grade above but never above it — treat it as the most favourable reading, not the settled one.

Otter Tail Corp earns a B (Sound & dependable) forensic quality grade. 1 forensic signal was flagged in its latest SEC filings, led by return on invested capital.

What the filings flag

8.6%
FY2025
Return on invested capital. Return on invested capital is 8.6% in the latest fiscal year and slipping across FY2023–FY2025 from 11.0%. After-tax operating profit was $299M in FY2023 and $273M in FY2025, with operating income at 27.9% of revenue in FY2023, 28.6% in FY2024 and 26.6% in FY2025. The capital base behind it grew +18% across FY2023–FY2025, from $2.7B to $3.2B, while the return fell 2.4 points, so the dollars added over that window earned less than the 11.0% the older base was already earning.

Key fundamentals

Latest Revenue$1.30B
Revenue Growth YoY-2.3%
Revenue CAGR (2yr)-2.0%
Net Margin21.2%
Free Cash Flow$97.9M
Return on Equity15.6%
Debt / Equity0.59x

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Data from SEC EDGAR public filings · metrics as of Nov 9, 2026. Forensic signals flag probability, not certainty.

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