Forensic Analysis · Industrials / Manufacturing / Defense · as of Sep 25, 2026
Littelfuse Inc (LFUS)
A forensic read on Littelfuse Inc built from its complete SEC filings — financial-health screens, earnings quality, red flags and a price-aware rating. Reproducible math, not opinion.
D · Weak — demands caution
Forensic grade
Safe
Financial health
10.3
Distress distance
Clean
Earnings quality
2
Forensic signals
-1045.8
P / E (ttm)
-3.0%
ROE
$10.7B
Market cap
1.11%
Dividend yield
8.9%
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 (red flags, auditor quality, say on pay, board independence, going concern, valuation). 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.
Littelfuse Inc earns a D (Weak — demands caution) forensic quality grade, and its balance-sheet distress test reads 10.3, placing it in the Safe zone. 2 forensic signals were flagged in its latest SEC filings, led by return on invested capital.
What the filings flag
0.8%
FY2025
Return on invested capital.Return on invested capital is 0.8% in the latest fiscal year and slipping across FY2023–FY2025 from 9.3%. After-tax operating profit was $285M in FY2023 and $24M in FY2025, with operating income at 15.3% of revenue in FY2023, 7.2% in FY2024 and 1.6% in FY2025. The capital base behind it barely moved across FY2023–FY2025 ($3.1B to $3.0B, -4%), so there has been little new capital for that return to be earned on. FY2025's operating profit carried a $302M asset write-down, a $301M goodwill write-off and a $18M restructuring charge that alone took about 13.7 points off that year's return, so more than the whole 8.5-point fall across FY2023–FY2025 is that charge landing in the latest year rather than the capital earning less. FY2024's operating profit carried a $94M asset write-down, a $45M goodwill write-off and a $15M restructuring charge that alone took about 3.6 points off that year's return; FY2024 sits between the two ends of FY2023–FY2025, so the charge shapes the path between them without moving the change across it.
$346M
FY2024–FY2025
Goodwill impairments.Took $346M of goodwill writedowns across 2 years (FY2024 ($45M), FY2025 ($301M)) — about 1214% of net income over the span. A large writedown means an acquisition turned out worth far less than was paid — a real mark against M&A discipline.
Key fundamentals
Latest Revenue$2.39B
Revenue Growth YoY+8.9%
Revenue CAGR (2yr)+0.5%
Net Margin-3.0%
Free Cash Flow$366.1M
Return on Equity-3.0%
Debt / Equity0.33x
The forensic grade and screens above are free — no account needed. Want the AI investment read on top — the 0–100 rating, thesis, bull-vs-bear, red flags and the 12-month scenario, written from Littelfuse Inc's actual 10-K/10-Q/8-K filings?