AAOI
Applied Optoelectronics, Inc.
AAOI's outlook is improving, though it still trails on the overall score.
AMKR
Amkor Technology, Inc.
AMKR 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.
AMKR Fundamentals
| Metric | Status |
|---|---|
| Stable | |
| Strong | |
| Under pressure | |
| Healthy |
AMKR's profitability and balance sheet are currently healthy, and its revenue is stable, but its cash flow is under pressure.
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.
AMKR PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Cheap | 8.9x | $21.90 | -41% |
| Fair | 14x | $35.76 | -3.7% |
| Forward | 14x | $37.12 | — |
| Current | 15x | $37.12 | — |
| Expensive | 25x | $61.05 | +64% |
Historical ranges are pointers, not guarantees.
AMKR's PE is in its fair range at 15x. If earnings grow as analysts expect, today's price would be 14x next year's earnings.
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.
AMKR Forward outlook
| Metric | Outlook |
|---|---|
| Improving | |
| Strong growth | |
| Growth | |
| Improving | |
| Limited | |
| Low |
Analysts expect earnings and revenue growth for AMKR, 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.
AMKR Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $2.71 | +9.9% |
| Q3 2026 | $2.47 | +98% |
| Q2 2026 | $2.22 | +80% |
| Q1 2026 | $1.74 | +36% |
| Q4 2025 | $1.50 | +4.9% |
| Q3 2025 | $1.25 | -16% |
| Q2 2025 | $1.23 | -20% |
| Q1 2025 | $1.28 | -16% |
| Q4 2024 | $1.43 | -2.1% |
AMKR has the edge over AAOI on earnings quality, reporting a profit while its opponent remains loss making.
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 AMKR on sales, with more consistent year-over-year improvement.
| 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's operating margin was −0.5% last quarter, up 15 points from the same quarter a year ago, near the top of its range since 2019.
AMKR Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $2B | +0.2% |
| Q2 2026 | $1.9B | +26% |
| Q1 2026 | $1.7B | +27% |
| Q4 2025 | $1.9B | +16% |
| Q3 2025 | $2B | +6.7% |
| Q2 2025 | $1.5B | +3.4% |
| Q1 2025 | $1.3B | -3.2% |
| Q4 2024 | $1.6B | -7% |
AMKR's revenue has grown year over year for six quarters in a row: $2B last quarter, about level with the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 11% | +3.3 points |
| Q2 2026 | 11% | +4.4 points |
| Q1 2026 | 6% | +3.6 points |
| Q4 2025 | 9.8% | +1.6 points |
| Q3 2025 | 8% | 0 points |
| Q2 2025 | 6.1% | +0.5 points |
| Q1 2025 | 2.4% | -3 points |
| Q4 2024 | 8.3% | -0.8 points |
AMKR has the edge over AAOI on profitability, with a higher operating margin.
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.
AMKR Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | -$61.6M | +$16.3M |
| Q2 2026 | -$227.3M | -302% |
| Q1 2026 | -$79.5M | -$23.8M |
| Q4 2025 | $212.4M | -16% |
| Q3 2025 | -$77.9M | -$46.6M |
| Q2 2025 | $112.3M | +92% |
| Q1 2025 | -$55.7M | -184% |
| Q4 2024 | $251.9M | -25% |
AMKR has the edge over AAOI on cash flow, with more consistent year-over-year improvement.
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.
AMKR Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -0.2% | -452K shares |
| 1 year | +0.5% | +1.2M shares |
| 3 years | +1% | +2.4M shares |
| 5 years | +1.5% | +3.6M shares |
| Available history | +3.9% | +9.4M shares |
AMKR has the edge over AAOI on shareholder dilution, with a more favorable share count trend.
AAOI Net Leverage
AAOI's operating earnings (EBITDA) were negative over the past year, so its debt can't be measured against them.
AMKR Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 0.6x | Very low |
| Q2 2026 | 0.7x | Very low |
| Q1 2026 | 0.3x | Very low |
| Q4 2025 | 0.1x | Very low |
| Q3 2025 | 0.3x | Very low |
| Q2 2025 | 0.0x | Very low |
| Q1 2025 | 0.1x | Very low |
| Q4 2024 | 0.0x | Very low |
AMKR's net debt is less than a year of its operating earnings (EBITDA).
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).
AMKR Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 39.0 | Neutral |
| Stochastic | 13.3 | Oversold |
AMKR's weekly RSI is 39 (neutral) and its Stochastic is 13 (oversold).
AAOI PE vs Technology Sector
AAOI has no meaningful PE right now: it lost money over the past year.
AMKR PE vs Technology Sector
| Metric | AMKR | Sector median | Relative |
|---|---|---|---|
| PE | 15x | 28x | 46% below |
| PE % | 52 | 35 | 17 pts above |
AMKR is trading at 15x earnings, a 46% discount to the Technology sector's median of 28x.
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 fallen below most of its moving averages, though it's still 43% above its 200-week average.
AMKR Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $43.7 | 15% below |
| 20 week MA | $51.5 | 28% below |
| 50 week MA | $54.5 | 32% below |
| 100 week MA | $39.1 | 5.1% below |
| 200 week MA | $34.0 | 9.1% above |
AMKR has fallen below most of its moving averages, though it's still 9.1% above 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 AMKR on returns for 2026, with the stronger performance.
AMKR Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $13.3 | $15.0 | +13% |
| 2021 | $15.0 | $23.1 | +54% |
| 2022 | $23.1 | $24.5 | +5.9% |
| 2023 | $24.5 | $33.3 | +36% |
| 2024 | $33.3 | $26.1 | -22% |
| 2025 | $26.1 | $40.6 | +56% |
| 2026 YTD | $40.6 | $37.1 | -8.5% |
AMKR has finished higher in five of the last six years, two of them by more than 50%. It's down 8.5% so far in 2026.