AAOI
Applied Optoelectronics, Inc.
AAOI offers stronger modeled upside, but that advantage does not outweigh its weaker overall profile.
AMBA
Ambarella, Inc.
AMBA has the edge over AAOI overall, supported by lower modeled downside and stronger fundamentals.
AAOI Fundamentals
| Metric | Status |
|---|---|
| Strong | |
| Under pressure | |
| Weak | |
| Unavailable |
AAOI's revenue is currently strong, but its profitability and cash flow are under pressure. There isn't enough data to rate its balance sheet.
AMBA Fundamentals
| Metric | Status |
|---|---|
| Healthy | |
| Under pressure | |
| Under pressure | |
| Unavailable |
AMBA's revenue is currently healthy, but its profitability and cash flow are under pressure. There isn't enough data to rate its balance sheet.
AAOI PE Valuation
AAOI has no meaningful PE right now: it lost money over the past year. If it returns to profit as analysts expect, today's price would be 18x next year's earnings.
AMBA PE Valuation
AMBA has no meaningful PE right now: it lost money over the past year.
AAOI Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Returning to profit | |
| Strong growth | |
| Strongly improving | |
| Limited | |
| Low |
Analysts expect AAOI to return to profit, with revenue growing. However, they disagree widely on these estimates.
AMBA Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Strong growth | |
| Growth | |
| Strongly improving | |
| Limited | |
| Low |
Analysts expect earnings and revenue growth for AMBA, with profitability improving. However, they disagree widely on these estimates.
AAOI Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $2.98 | — |
| Q3 2026 | -$0.42 | +$3.02 |
| Q2 2026 | -$0.77 | +$2.81 |
| Q1 2026 | -$0.65 | +$3.43 |
| Q4 2025 | -$0.64 | +$3.86 |
| Q3 2025 | -$3.44 | -$1.41 |
| Q2 2025 | -$3.58 | -$1.70 |
| Q1 2025 | -$4.08 | -$2.29 |
| Q4 2024 | -$4.50 | -$2.75 |
AAOI is still losing money, but far less than before: $0.42 per share over the past year, against $4.50 at its worst in late 2024.
AMBA Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $0.96 | — |
| Q3 2026 | -$1.29 | +$0.82 |
| Q2 2026 | -$1.61 | +$0.88 |
| Q1 2026 | -$1.78 | +$1.06 |
| Q4 2025 | -$1.88 | +$1.99 |
| Q3 2025 | -$2.11 | +$2.22 |
| Q2 2025 | -$2.49 | +$1.78 |
| Q1 2025 | -$2.84 | +$1.41 |
| Q4 2024 | -$3.87 | -$0.85 |
AMBA has the edge over AAOI on earnings, with more consistent year-over-year improvement.
AAOI Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $269.9M | +127% |
| Q2 2026 | $191.9M | +86% |
| Q1 2026 | $151.1M | +51% |
| Q4 2025 | $134.3M | +34% |
| Q3 2025 | $118.6M | +82% |
| Q2 2025 | $103M | +138% |
| Q1 2025 | $99.9M | +146% |
| Q4 2024 | $100.3M | +66% |
AAOI has the edge over AMBA on sales, with stronger typical year-over-year growth.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | -0.5% | +15 points |
| Q2 2026 | -13% | +2.6 points |
| Q1 2026 | -8.6% | +0.3 points |
| Q4 2025 | -8.6% | -2.1 points |
| Q3 2025 | -15% | +10 points |
| Q2 2025 | -16% | +45 points |
| Q1 2025 | -8.9% | +44 points |
| Q4 2024 | -6.5% | +1 points |
AAOI has the edge over AMBA on profitability, with a higher operating margin.
AMBA Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $108.1M | +13% |
| Q2 2026 | $100.4M | +17% |
| Q1 2026 | $100.9M | +20% |
| Q4 2025 | $108.5M | +31% |
| Q3 2025 | $95.5M | +50% |
| Q2 2025 | $85.9M | +58% |
| Q1 2025 | $84M | +63% |
| Q4 2024 | $82.7M | +63% |
AMBA's revenue has grown year over year for nine quarters in a row: $108M last quarter, up 13% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | -7.5% | +16 points |
| Q2 2026 | -19% | +11 points |
| Q1 2026 | -18% | +12 points |
| Q4 2025 | -15% | +16 points |
| Q3 2025 | -23% | +34 points |
| Q2 2025 | -30% | +42 points |
| Q1 2025 | -30% | +51 points |
| Q4 2024 | -31% | +52 points |
AMBA's operating margin was −7.5% last quarter, up 15 points from the same quarter a year ago.
AAOI Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | -$369.9M | -$291.2M |
| Q2 2026 | -$265.3M | -$174.4M |
| Q1 2026 | -$143.6M | -$64.3M |
| Q4 2025 | -$104.6M | -$51.6M |
| Q3 2025 | -$78.7M | -$58M |
| Q2 2025 | -$91M | -$86M |
| Q1 2025 | -$79.3M | -$45.1M |
| Q4 2024 | -$53M | -$48.4M |
AAOI has burned cash in almost every quarter: −$883M over the past year, against −$302M the year before.
AMBA Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | -$7.1M | -612% |
| Q2 2026 | -$29.6M | -389% |
| Q1 2026 | $15M | -30% |
| Q4 2025 | $31.4M | +663% |
| Q3 2025 | $1.4M | -90% |
| Q2 2025 | $10.2M | +$26.3M |
| Q1 2025 | $21.2M | +$27.2M |
| Q4 2024 | $4.1M | -25% |
AMBA has the edge over AAOI on cash generation, producing positive trailing cash flow while its opponent burns cash.
AAOI Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +7.7% | +6.3M shares |
| 1 year | +39% | +24.5M shares |
| 3 years | +168% | +55.1M shares |
| 5 years | +224% | +60.7M shares |
| Available history | +340% | +67.9M shares |
AAOI has 88M diluted shares, up 39% from a year ago.
AMBA Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +0.9% | +400K shares |
| 1 year | +3.4% | +1.5M shares |
| 3 years | +11% | +4.3M shares |
| 5 years | +21% | +7.6M shares |
| Available history | +32% | +10.7M shares |
AMBA has the edge over AAOI on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q3 2026 | — |
| Q2 2026 | $2.4M |
| Q1 2026 | — |
| Q4 2025 | — |
| Q3 2025 | — |
| Q2 2025 | $1M |
| Q1 2022 | — |
| Q4 2021 | — |
AMBA has spent almost nothing on buybacks in the past year.
AAOI Net Leverage
AAOI's operating earnings (EBITDA) were negative over the past year, so its debt can't be measured against them.
AMBA Net Leverage
AMBA's operating earnings (EBITDA) were negative over the past year, so its debt can't be measured against them.
AAOI Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 35.1 | Neutral |
| Stochastic | 4.8 | Oversold |
AAOI's weekly RSI is 35 (neutral) and its Stochastic is 5 (oversold).
AMBA Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 44.9 | Neutral |
| Stochastic | 16.2 | Oversold |
AMBA's weekly RSI is 45 (neutral) and its Stochastic is 16 (oversold).
AAOI PE vs Technology Sector
AAOI has no meaningful PE right now: it lost money over the past year.
AMBA PE vs Technology Sector
AMBA has no meaningful PE right now: it lost money over the past year.
AAOI Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $80.2 | 34% below |
| 20 week MA | $100.6 | 47% below |
| 50 week MA | $100.3 | 47% below |
| 100 week MA | $62.3 | 15% below |
| 200 week MA | $36.9 | 43% above |
AAOI has the edge over AMBA on trend strength, trading above more of its moving averages.
AMBA Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $65.0 | 6% below |
| 20 week MA | $70.1 | 13% below |
| 50 week MA | $67.7 | 9.9% below |
| 100 week MA | $68.1 | 10% below |
| 200 week MA | $65.2 | 6.4% below |
AMBA is in a downtrend: it's below all five of its weekly moving averages, and 6.4% below its 200-week average.
AAOI Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $11.5 | $8.77 | -24% |
| 2021 | $8.77 | $5.64 | -36% |
| 2022 | $5.64 | $1.95 | -65% |
| 2023 | $1.95 | $19.3 | +891% |
| 2024 | $19.3 | $37.7 | +95% |
| 2025 | $37.7 | $37.2 | -1.5% |
| 2026 YTD | $37.2 | $52.9 | +42% |
AAOI has the edge over AMBA on returns for 2026, with the stronger performance.
AMBA Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $59.9 | $92.6 | +55% |
| 2021 | $92.6 | $200.6 | +117% |
| 2022 | $200.6 | $81.2 | -60% |
| 2023 | $81.2 | $61.3 | -25% |
| 2024 | $61.3 | $73.5 | +20% |
| 2025 | $73.5 | $71.4 | -2.9% |
| 2026 YTD | $71.4 | $61.1 | -14% |
AMBA's yearly returns have swung widely, from +117% in 2021 to −60% in 2022. It's down 14% so far in 2026.