Allegro MicroSystems vs Silicon Labs
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The short version
- Allegro MicroSystems is the larger business, with $890M of revenue in fiscal 2026 against $785M for Silicon Labs.
- Silicon Labs grew revenue faster (34.3%, against 22.8%).
- Allegro MicroSystems kept more of each dollar of sales as operating profit (2.1% operating margin, against −9.0%).
- Allegro MicroSystems turned more of its sales into free cash flow (14.0% FCF margin, against 8.4%).
- Allegro MicroSystems earned a higher return on the capital invested in it (1.3%, against −7.0%).
| Latest fiscal year | ALGM · FY26 | SLAB · FY25 |
|---|---|---|
| Size | ||
| Market cap | $5.9B | $7.3B |
| Revenue | $890M | $785M |
| Free cash flow | $125M | $65.8M |
| Net income | −$14.9M | −$64.9M |
| Growth | ||
| Revenue growth | 22.8% | 34.3% |
| 5-year growth | 8.5% | 9.0% |
| Share count change | −1.4% | 1.7% |
| Profitability | ||
| Gross margin | 46.3% | 58.2% |
| Operating margin | 2.1% | −9.0% |
| Net margin | −1.7% | −8.3% |
| FCF margin | 14.0% | 8.4% |
| Return on capital | 1.3% | −7.0% |
| Return on equity | −1.6% | −6.0% |
| Balance sheet | ||
| Net debt | $119M | −$291M |
| Net debt / EBITDA | 1.4x | — |
| Dividends and buybacks | $0.0M | $0.0M |
| Valuation & quality | ||
| P/E | — | — |
| Piotroski F-score | 7 | 5 |
Revenue
FY17
ALGM —
SLAB $769M
FY18
ALGM —
SLAB $868M
FY19
ALGM —
SLAB $474M
FY20
ALGM $650M
SLAB $511M
FY21
ALGM $591M
SLAB $721M
FY22
ALGM $769M
SLAB $1.0B
FY23
ALGM $974M
SLAB $782M
FY24
ALGM $1.0B
SLAB $584M
FY25
ALGM $725M
SLAB $785M
FY26
ALGM $890M
SLAB —
ALGM
SLAB
Operating margin
FY17
ALGM —
SLAB 11.1%
FY18
ALGM —
SLAB 9.8%
FY19
ALGM —
SLAB −18.7%
FY20
ALGM 8.1%
SLAB −21.0%
FY21
ALGM 2.1%
SLAB −4.6%
FY22
ALGM 17.8%
SLAB 11.7%
FY23
ALGM 20.9%
SLAB −3.1%
FY24
ALGM 18.7%
SLAB −28.3%
FY25
ALGM −2.7%
SLAB −9.0%
FY26
ALGM 2.1%
SLAB —
ALGM
SLAB
Free cash flow
FY17
ALGM —
SLAB $177M
FY18
ALGM —
SLAB $149M
FY19
ALGM —
SLAB $151M
FY20
ALGM $35.8M
SLAB $118M
FY21
ALGM $79.9M
SLAB $62.6M
FY22
ALGM $86.2M
SLAB $115M
FY23
ALGM $113M
SLAB −$52.6M
FY24
ALGM $56.9M
SLAB −$25.7M
FY25
ALGM $22.0M
SLAB $65.8M
FY26
ALGM $125M
SLAB —
ALGM
SLAB
Return on capital
FY17
ALGM —
SLAB 9.2%
FY18
ALGM —
SLAB 12.7%
FY19
ALGM —
SLAB −9.0%
FY20
ALGM —
SLAB −9.4%
FY21
ALGM 2.2%
SLAB −3.1%
FY22
ALGM 26.0%
SLAB 12.3%
FY23
ALGM 32.3%
SLAB −2.4%
FY24
ALGM 17.0%
SLAB −15.9%
FY25
ALGM −1.3%
SLAB −7.0%
FY26
ALGM 1.3%
SLAB —
ALGM
SLAB
Each company's latest fiscal year; fiscal years end in different months. The best value in each row is highlighted where higher (or lower) is clearly better. Not investment advice.