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Side-by-side financial comparison of Ambiq Micro, Inc. (AMBQ) and SIFCO INDUSTRIES INC (SIF). Click either name above to swap in a different company.

SIFCO INDUSTRIES INC is the larger business by last-quarter revenue ($24.0M vs $18.2M, roughly 1.3× Ambiq Micro, Inc.). SIFCO INDUSTRIES INC runs the higher net margin — 7.5% vs -49.6%, a 57.0% gap on every dollar of revenue.

Ambiq Micro, Inc. is an American semiconductor company specializing in low-power microcontrollers and systems-on-chip, including products for devices smartwatches, medical devices, and sensors. Founded in 2010 by University of Michigan researchers Scott Hanson, David Blaauw, and Dennis Sylvester, the company is headquartered in Austin, Texas. Its products employ Subthreshold Power Optimized Technology (SPOT) to reduce energy consumption and enable on-device edge AI. In 2025, Ambiq went public...

SIFCO Industries, Inc. (SIFCO), is a global metal component manufacturer based in Cleveland, Ohio.

AMBQ vs SIF — Head-to-Head

Bigger by revenue
SIF
SIF
1.3× larger
SIF
$24.0M
$18.2M
AMBQ
Higher net margin
SIF
SIF
57.0% more per $
SIF
7.5%
-49.6%
AMBQ

Income Statement — Q3 FY2025 vs Q1 FY2026

Metric
AMBQ
AMBQ
SIF
SIF
Revenue
$18.2M
$24.0M
Net Profit
$-9.0M
$1.8M
Gross Margin
42.3%
21.6%
Operating Margin
-55.3%
10.7%
Net Margin
-49.6%
7.5%
Revenue YoY
14.8%
Net Profit YoY
177.3%
EPS (diluted)
$-0.72
$0.29

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
AMBQ
AMBQ
SIF
SIF
Q4 25
$24.0M
Q3 25
$18.2M
$22.8M
Q2 25
$17.9M
$22.1M
Q1 25
$19.0M
Q4 24
$20.9M
Q3 24
$21.7M
Q2 24
$22.0M
Q1 24
$20.5M
Net Profit
AMBQ
AMBQ
SIF
SIF
Q4 25
$1.8M
Q3 25
$-9.0M
$-429.0K
Q2 25
$-8.5M
$3.4M
Q1 25
$-1.4M
Q4 24
$-2.3M
Q3 24
$-443.0K
Q2 24
$72.0K
Q1 24
$-1.6M
Gross Margin
AMBQ
AMBQ
SIF
SIF
Q4 25
21.6%
Q3 25
42.3%
9.6%
Q2 25
40.1%
26.7%
Q1 25
8.3%
Q4 24
4.4%
Q3 24
10.7%
Q2 24
12.3%
Q1 24
7.3%
Operating Margin
AMBQ
AMBQ
SIF
SIF
Q4 25
10.7%
Q3 25
-55.3%
-1.7%
Q2 25
-49.2%
14.8%
Q1 25
-4.1%
Q4 24
-9.2%
Q3 24
-1.5%
Q2 24
0.7%
Q1 24
-6.5%
Net Margin
AMBQ
AMBQ
SIF
SIF
Q4 25
7.5%
Q3 25
-49.6%
-1.9%
Q2 25
-47.5%
15.4%
Q1 25
-7.3%
Q4 24
-11.1%
Q3 24
-2.0%
Q2 24
0.3%
Q1 24
-7.8%
EPS (diluted)
AMBQ
AMBQ
SIF
SIF
Q4 25
$0.29
Q3 25
$-0.72
$-0.07
Q2 25
$-18.89
$0.56
Q1 25
$-0.23
Q4 24
$-0.38
Q3 24
$-0.07
Q2 24
$0.01
Q1 24
$-0.27

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
AMBQ
AMBQ
SIF
SIF
Cash + ST InvestmentsLiquidity on hand
$146.5M
$1.1M
Total DebtLower is stronger
$39.0K
Stockholders' EquityBook value
$169.8M
$38.7M
Total Assets
$186.7M
$74.9M
Debt / EquityLower = less leverage
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMBQ
AMBQ
SIF
SIF
Q4 25
$1.1M
Q3 25
$146.5M
$491.0K
Q2 25
$47.5M
$2.0M
Q1 25
$1.9M
Q4 24
$3.1M
Q3 24
$1.7M
Q2 24
$3.4M
Q1 24
$2.5M
Total Debt
AMBQ
AMBQ
SIF
SIF
Q4 25
$39.0K
Q3 25
$51.0K
Q2 25
Q1 25
Q4 24
Q3 24
$0
Q2 24
$3.6M
Q1 24
$4.1M
Stockholders' Equity
AMBQ
AMBQ
SIF
SIF
Q4 25
$38.7M
Q3 25
$169.8M
$36.9M
Q2 25
$-307.3M
$35.8M
Q1 25
$32.4M
Q4 24
$33.7M
Q3 24
$30.4M
Q2 24
$29.8M
Q1 24
$29.7M
Total Assets
AMBQ
AMBQ
SIF
SIF
Q4 25
$74.9M
Q3 25
$186.7M
$73.4M
Q2 25
$89.2M
$77.3M
Q1 25
$78.8M
Q4 24
$81.0M
Q3 24
$104.6M
Q2 24
$106.3M
Q1 24
$104.2M
Debt / Equity
AMBQ
AMBQ
SIF
SIF
Q4 25
0.00×
Q3 25
0.00×
Q2 25
Q1 25
Q4 24
Q3 24
0.00×
Q2 24
0.12×
Q1 24
0.14×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AMBQ
AMBQ
SIF
SIF
Operating Cash FlowLast quarter
$-5.0M
$8.1M
Free Cash FlowOCF − Capex
$8.0M
FCF MarginFCF / Revenue
33.3%
Capex IntensityCapex / Revenue
0.4%
Cash ConversionOCF / Net Profit
4.51×
TTM Free Cash FlowTrailing 4 quarters
$11.5M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMBQ
AMBQ
SIF
SIF
Q4 25
$8.1M
Q3 25
$-5.0M
$726.0K
Q2 25
$-10.5M
$371.0K
Q1 25
$2.8M
Q4 24
$-3.8M
Q3 24
$857.0K
Q2 24
$382.0K
Q1 24
$-3.2M
Free Cash Flow
AMBQ
AMBQ
SIF
SIF
Q4 25
$8.0M
Q3 25
$566.0K
Q2 25
$310.0K
Q1 25
$2.7M
Q4 24
$-3.9M
Q3 24
$580.0K
Q2 24
$-175.0K
Q1 24
$-3.9M
FCF Margin
AMBQ
AMBQ
SIF
SIF
Q4 25
33.3%
Q3 25
2.5%
Q2 25
1.4%
Q1 25
14.1%
Q4 24
-18.8%
Q3 24
2.7%
Q2 24
-0.8%
Q1 24
-18.9%
Capex Intensity
AMBQ
AMBQ
SIF
SIF
Q4 25
0.4%
Q3 25
0.7%
Q2 25
0.3%
Q1 25
0.8%
Q4 24
0.5%
Q3 24
1.3%
Q2 24
2.5%
Q1 24
3.3%
Cash Conversion
AMBQ
AMBQ
SIF
SIF
Q4 25
4.51×
Q3 25
Q2 25
0.11×
Q1 25
Q4 24
Q3 24
Q2 24
5.31×
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AMBQ
AMBQ

Customer Concentration Risk$16.2M89%
Other$2.0M11%

SIF
SIF

Fixed Wing Aircraft Revenue$10.5M44%
Commercial Revenue$8.7M36%
Commercial Product And Other Revenue$2.8M12%
Commercial Space$1.1M5%
Other$840.0K4%

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