Comprehensive Stock Comparison
Compare Nano Labs Ltd (NA) vs Ambiq Micro, Inc. (AMBQ) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Growth | AMBQ | 16.1% revenue growth vs NA's -48.2% |
| Quality / Margins | AMBQ | -52.1% net margin vs NA's -261.0% |
| Stability / Safety | NA | Beta 0.67 vs AMBQ's 2.81 |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | AMBQ | -20.3% vs NA's -53.2% |
| Efficiency (ROA) | NA | -4.3% ROA vs AMBQ's -44.9%, ROIC -30.4% vs -104.0% |
Who Each Stock Is For
Income & stability
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
Nano Labs is a fabless semiconductor company that designs high-performance computing chips for data centers and distributed computing applications. It generates revenue primarily from chip sales to enterprise customers — including high throughput computing chips, smart network interface cards, and vision computing chips — with additional income from software and technology licensing. The company's competitive advantage lies in its specialized expertise in high-performance computing architectures and its early-mover position in China's growing data center chip market.
Ambiq Micro designs ultra-low-power semiconductor chips for battery-powered IoT and wearable devices. It generates revenue primarily from selling its Apollo system-on-chip and Atomiq AI accelerator products — with technical support services as a secondary stream — through a global sales representative network. The company's key advantage is its proprietary subthreshold power-optimized technology that enables significantly longer battery life than conventional chips, creating a strong moat in power-sensitive edge AI applications.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Segment breakdown not available.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
AMBQ leads in 2 of 6 categories (Financial Metrics, Total Returns). NA leads in 1 (Valuation Metrics). 2 tied.
Financial Metrics (TTM)
AMBQ is the larger business by revenue, generating $76M annually — 3.2x NA's $24M. Profitability is closely matched — net margins range from -52.1% (AMBQ) to -2.6% (NA).
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| RevenueTrailing 12 months | $24M | $76M |
| EBITDAEarnings before interest/tax | -$66M | — |
| Net IncomeAfter-tax profit | -$63M | — |
| Free Cash FlowCash after capex | -$117M | — |
| Gross MarginGross profit ÷ Revenue | +48.8% | +31.9% |
| Operating MarginEBIT ÷ Revenue | -3.2% | -53.4% |
| Net MarginNet income ÷ Revenue | -2.6% | -52.1% |
| FCF MarginFCF ÷ Revenue | -4.9% | -33.1% |
| Rev. Growth (YoY)Latest quarter vs prior year | -66.5% | — |
| EPS Growth (YoY)Latest quarter vs prior year | +50.0% | — |
Valuation Metrics
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| Market CapShares × price | $8M | $560M |
| Enterprise ValueMkt cap + debt − cash | $33M | $500M |
| Trailing P/EPrice ÷ TTM EPS | -12.12x | -9.81x |
| Forward P/EPrice ÷ next-FY EPS est. | — | — |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | — |
| Price / SalesMarket cap ÷ Revenue | 1.43x | 7.36x |
| Price / BookPrice ÷ Book value/share | 5.88x | 4.87x |
| Price / FCFMarket cap ÷ FCF | — | — |
Profitability & Efficiency
NA delivers a -10.2% return on equity — every $100 of shareholder capital generates $-10 in annual profit, vs $-55 for AMBQ. AMBQ carries lower financial leverage with a 0.01x debt-to-equity ratio, signaling a more conservative balance sheet compared to NA's 0.85x. On the Piotroski fundamental quality scale (0–9), AMBQ scores 5/9 vs NA's 4/9, reflecting solid financial health.
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| ROE (TTM)Return on equity | -10.2% | -54.7% |
| ROA (TTM)Return on assets | -4.3% | -44.9% |
| ROICReturn on invested capital | -30.4% | -104.0% |
| ROCEReturn on capital employed | -38.3% | -53.4% |
| Piotroski ScoreFundamental quality 0–9 | 4 | 5 |
| Debt / EquityFinancial leverage | 0.85x | 0.01x |
| Net DebtTotal debt minus cash | $166M | -$60M |
| Cash & Equiv.Liquid assets | $32M | $61M |
| Total DebtShort + long-term debt | $199M | $966,000 |
| Interest CoverageEBIT ÷ Interest expense | -5.56x | — |
Total Returns (with DRIP)
A $10,000 investment in AMBQ five years ago would be worth $7,968 today (with dividends reinvested), compared to $245 for NA. Over the past 12 months, AMBQ leads with a -20.3% total return vs NA's -53.2%. The 3-year compound annual growth rate (CAGR) favors AMBQ at -7.3% vs NA's -36.5% — a key indicator of consistent wealth creation.
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| YTD ReturnYear-to-date | -10.1% | +1.2% |
| 1-Year ReturnPast 12 months | -53.2% | -20.3% |
| 3-Year ReturnCumulative with dividends | -74.3% | -20.3% |
| 5-Year ReturnCumulative with dividends | -97.6% | -20.3% |
| 10-Year ReturnCumulative with dividends | -97.6% | -20.3% |
| CAGR (3Y)Annualised 3-year return | -36.5% | -7.3% |
Risk & Volatility
NA is the less volatile stock with a 0.67 beta — it tends to amplify market swings less than AMBQ's 2.81 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. AMBQ currently trades 59.3% from its 52-week high vs NA's 9.4% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.67x | 2.81x |
| 52-Week HighHighest price in past year | $31.48 | $51.76 |
| 52-Week LowLowest price in past year | $2.75 | $22.12 |
| % of 52W HighCurrent price vs 52-week peak | +9.4% | +59.3% |
| RSI (14)Momentum oscillator 0–100 | 40.5 | 59.4 |
| Avg Volume (50D)Average daily shares traded | 36K | 237K |
Analyst Outlook
| Metric | NANano Labs Ltd | AMBQAmbiq Micro, Inc. |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Hold |
| Price TargetConsensus 12-month target | — | $32.00 |
| # AnalystsCovering analysts | — | 1 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | 0.0% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Revenue Growth — 10 Years
| Stock | 2019 | 2024 | Change |
|---|---|---|---|
| Nano Labs Ltd (NA) | $0.00 | $41M | — |
| Ambiq Micro, Inc. (AMBQ) | $51M | $76M | +49.2% |
Nano Labs Ltd's revenue grew from $0M (2019) to $41M (2024) — a 0.0% CAGR.
Chart 2Net Margin Trend — 10 Years
| Stock | 2020 | 2024 | Change |
|---|---|---|---|
| Nano Labs Ltd (NA) | -17.7% | -2.8% | +84.3% |
| Ambiq Micro, Inc. (AMBQ) | -49.5% | -52.1% | -5.4% |
Nano Labs Ltd's net margin went from -18% (2020) to -3% (2024). Ambiq Micro, Inc.'s net margin went from -49% (2020) to -52% (2024).
Chart 3EPS Growth — 10 Years
| Stock | 2019 | 2024 | Change |
|---|---|---|---|
| Nano Labs Ltd (NA) | -0.28 | -1.67 | -496.4% |
| Ambiq Micro, Inc. (AMBQ) | -1.85 | -3.13 | -69.2% |
Nano Labs Ltd's EPS grew from $-0.28 (2019) to $-1.67 (2024).
Chart 4Free Cash Flow — 5 Years
Nano Labs Ltd generated $-176M FCF in 2024 (-379% vs 2021). Ambiq Micro, Inc. generated $-25M FCF in 2024 (+56% vs 2021).
NA vs AMBQ: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is NA or AMBQ a better buy right now?
Analysts rate Ambiq Micro, Inc. (AMBQ) a "Hold" — based on 1 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.
02Which is the better long-term investment — NA or AMBQ?
Over the past 5 years, Ambiq Micro, Inc. (AMBQ) delivered a total return of -20.3%, compared to -97.6% for Nano Labs Ltd (NA). A $10,000 investment in AMBQ five years ago would be worth approximately $8K today (assuming dividends reinvested). Over 10 years, the gap is even starker: AMBQ returned -20.3% versus NA's -97.6%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
03Which is safer — NA or AMBQ?
By beta (market sensitivity over 5 years), Nano Labs Ltd (NA) is the lower-risk stock at 0.67β versus Ambiq Micro, Inc.'s 2.81β — meaning AMBQ is approximately 320% more volatile than NA relative to the S&P 500. On balance sheet safety, Ambiq Micro, Inc. (AMBQ) carries a lower debt/equity ratio of 1% versus 85% for Nano Labs Ltd — giving it more financial flexibility in a downturn.
04Which has better profit margins — NA or AMBQ?
Ambiq Micro, Inc. (AMBQ) is the more profitable company, earning -52.1% net margin versus -278.8% for Nano Labs Ltd — meaning it keeps -52.1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AMBQ leads at -53.4% versus -242.7% for NA. At the gross margin level — before operating expenses — AMBQ leads at 31.9%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.
05Which pays a better dividend — NA or AMBQ?
None of the stocks in this comparison currently pay a material dividend. All are effectively zero-yield and should be held for capital appreciation rather than income.
06Is NA or AMBQ better for a retirement portfolio?
For long-horizon retirement investors, Nano Labs Ltd (NA) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.67)). Ambiq Micro, Inc. (AMBQ) carries a higher beta of 2.81 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (NA: -97.6%, AMBQ: -20.3%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.
07What are the main differences between NA and AMBQ?
Both stocks operate in the Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.
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