Diodes Incorporated
DIOD Technology Semiconductors
Diodes Incorporated’s revenue for fiscal 2025 (year ended December 2025) was $1.5 billion, up 13.0% from fiscal 2024. In the quarter to June 2026, revenue grew 21.7%, EPS grew 3.03%, free cash flow grew 31.5% and total debt fell 25.0%, each against the same quarter a year earlier.
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Diodes Incorporated (DIOD) Piotroski F-score
Diodes Incorporated's Piotroski F-score for fiscal 2025 is 6 out of 9: 6 of nine tests of profitability, leverage and efficiency passed, up from 4 in fiscal 2024.
Piotroski F-score, annual
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Annual newest first
| Period | Piotroski F-score | Change (points) |
|---|---|---|
| FY2025 | 6 | 2.00 |
| FY2024 | 4 | (1.00) |
| FY2023 | 5 | (3.00) |
| FY2022 | 8 | (1.00) |
| FY2021 | 9 | 6.00 |
| FY2020 | 3 | (3.00) |
| FY2019 | 6 | (2.00) |
| FY2018 | 8 | 3.00 |
| FY2017 | 5 | 0.00 |
| FY2016 | 5 | — |
How fiscal 2025’s score is made up
| Test | This year | Year before | Result | Points |
|---|---|---|---|---|
| Positive return on assets | 2.74% | 1.85% | Pass | 1 |
| Positive operating cash flow | 215.51m | 119.44m | Pass | 1 |
| Rising return on assets | 2.74% | 1.85% | Pass | 1 |
| Cash flow above net income | 149.37m | 75.41m | Pass | 1 |
| Falling long-term leverage | 0.01 | 0.01 | Fail | 0 |
| Rising current ratio | 3.32 | 3.26 | Pass | 1 |
| No new shares issued | 46,340,000 | 46,208,000 | Fail | 0 |
| Rising gross margin | 31.20% | 33.24% | Fail | 0 |
| Rising asset turnover | 0.61 | 0.55 | Pass | 1 |
| Piotroski F-score | Mixed | 6 | ||
How the Piotroski F-score works
One point for each of nine tests, this fiscal year against the one before: positive return on assets, positive operating cash flow, rising return on assets, cash flow above net income, falling long-term leverage, a rising current ratio, no new shares issued, a rising gross margin and rising asset turnover. The ratios are the ones on this site, so each can be checked.
Joseph Piotroski (2000) called 8–9 high and 0–1 low; reading it in three bands is the common convention:
| 7–9 | Strong — most fundamentals improved |
|---|---|
| 4–6 | Mixed |
| 0–3 | Weak — most fundamentals deteriorated |
Where this differs from the paper: return on assets is on average rather than beginning-of-year assets, and weighted basic shares stand in for shares issued. The score is shown only when all nine tests can be worked out, which takes three fiscal years; banks and insurers, which report no current assets or gross profit, have none.
Piotroski F-score against peers
| Company | Piotroski F-score |
|---|---|
| CRUS Cirrus Logic, Inc. compare | 8 |
| POWI Power Integrations, Inc. compare | 7 |
| ALGM Allegro MicroSystems, Inc. compare | 7 |
| SYNA Synaptics Incorporated compare | 6 |
| DIOD Diodes Incorporated | 6 |
| IMOS Chipmos Technologies compare | 5 |
| VSH Vishay Intertechnology, Inc. compare | 5 |
| PI Impinj, Inc. compare | 4 |
| NVTS Navitas Semiconductor Corporation compare | 1 |
What Piotroski F-score is
The Piotroski F-Score tells an investor how many signs of improving profitability, funding and efficiency a company shows against a year earlier.
One point for each of nine tests against a year earlier: positive return on assets, positive operating cash flow, rising return on assets, cash flow above net income, falling long-term leverage, rising current ratio, no new shares issued, rising gross margin, and rising asset turnover