SIMOSilicon Motion Technology Corporation

$263.89+189% 1Y

Is the business good?

Mixed

The checks split: nothing decisive, though margins compressing.

1 to watch, 2 neutral, 1 without data
Profits arrive as cash0.75×derived · Dec 31, 2025

Operating profit is mostly backed by cash. Conversion is worsening vs a year ago.

Margin direction, 3 years−5.2 pts

Operating margin has narrowed over the past few years, profitability per dollar of sales is eroding.

Where ROE comes from10% ROA

A balanced mix of margins, efficiency, and leverage. ROE 15% = margin × turnover × leverage.

Unless marked, from derived.

Where this answer is blind. The F-score rewards improvement, so an already-elite company can score mid-pack.

How good a business is SIMO?

Silicon Motion Technology Corporation earns 12% on the capital it employs against a 9.0% cost of capital, so the business is worth more the bigger it gets.

12%

Return on invested capital · cost of capital 9.0% · 2.7 points above what the capital costs: growth creates value

Operating margin
11%

Operating margin · Semiconductors median 7.5% · fiscal year to FY2025

Cash conversion
0.75×

Cash conversion · 1.02× a year ago · most of the operating profit arrived as cash, working capital took the rest

Share count, year on year
−0.13%

Share count, year on year · flat: no meaningful dilution

Operating margin by fiscal year
YearOperating margin
FY202015%
FY202127%
FY202223%
FY20236.2%
FY202411%
FY202511%
Details›
Gross marginfiscal year to FY2025
48%
Operating marginfiscal year to FY2025
11%
Net marginfiscal year to FY2025
14%
Free cash flow margin
0.71%
R&D as % of revenue
30%
Revenue, trailing twelve months
$886M
Free cash flow, trailing twelve months
$6.3M
Net income, trailing twelve months
$123M
Return on invested capitaloperating profit after tax ÷ debt + equity − cash
12%

Margins, capital and share counts from the statements as filed with the SEC; cash conversion is operating cash flow over operating profit after tax.