AAOI
Applied Optoelectronics, Inc.
AAOI has the edge over STNE overall, supported by stronger modeled upside.
STNE
StoneCo Ltd.
STNE has lower modeled downside risk, despite its lower overall score.
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.
STNE Fundamentals
| Metric | Status |
|---|---|
| Stable | |
| Strong | |
| Strong | |
| Healthy |
STNE's profitability, cash flow and balance sheet are currently healthy, and its revenue is stable.
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.
STNE PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Current | 3.3x | $7.72 | — |
| Cheap | 7.7x | $17.74 | +130% |
| Fair | 61x | $141 | +1729% |
| Expensive | 131x | $303 | +3821% |
Historical ranges are pointers, not guarantees.
STNE's PE is 3.3x, but its earnings don't support one, so it isn't a reliable read right now.
AAOI Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Returning to profit | |
| Strong growth | |
| Strongly improving | |
| Limited | |
| Low |
AAOI has the edge over STNE on the outlook, with more favorable earnings and revenue expectations.
STNE Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Stable | |
| Stable | |
| Strongly improving | |
| Limited | |
| High |
Analysts expect STNE's profitability to improve, with its earnings and revenue holding steady.
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.
STNE Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Q2 2026 | $2.31 | +$3.07 |
| Q1 2026 | $2.37 | +$3.23 |
| Q4 2025 | $1.49 | +$2.46 |
| Q3 2025 | -$0.64 | -156% |
| Q2 2023 | $0.44 | +$2.08 |
| Q1 2023 | $0.00 | +$0.97 |
| Q4 2022 | -$0.30 | +$0.39 |
| Q3 2022 | -$0.79 | -$0.74 |
STNE 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 STNE 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'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.
STNE Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q2 2026 | $597.5M | +1.6% |
| Q1 2026 | $640.6M | +13% |
| Q4 2025 | $633.7M | +1.4% |
| Q3 2025 | $638.6M | +11% |
| Q2 2025 | $588.4M | +18% |
| Q1 2025 | $569.3M | +20% |
| Q4 2024 | $625M | +13% |
| Q3 2024 | $575.3M | +8.8% |
STNE's revenue has grown year over year every quarter since late 2020: $598M last quarter, up 1.6% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q2 2026 | 41% | -6.9 points |
| Q1 2026 | 51% | +1.9 points |
| Q4 2025 | 51% | +2.9 points |
| Q3 2025 | 56% | +10 points |
| Q2 2025 | 48% | -1.1 points |
| Q1 2025 | 49% | +0.4 points |
| Q4 2024 | 48% | +1.1 points |
| Q3 2024 | 46% | -1.6 points |
STNE 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.
STNE Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q2 2026 | $303.4M | +2369% |
| Q1 2026 | $555M | +820% |
| Q4 2025 | $99.1M | +$210.6M |
| Q3 2025 | -$236.2M | -$159.3M |
| Q2 2025 | $12.3M | +$202.2M |
| Q1 2025 | $60.3M | +$558M |
| Q4 2024 | -$111.6M | +$6.5M |
| Q3 2024 | -$76.9M | -$56.7M |
STNE 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.
STNE Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -3.2% | -8M shares |
| 1 year | -11% | -30.5M shares |
| 3 years | -27% | -93M shares |
| 5 years | -22% | -69.4M shares |
| Available history | -13% | -36.8M shares |
STNE has the edge over AAOI on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q2 2026 | $139.1M |
| Q1 2026 | $93.4M |
| Q4 2025 | $235.8M |
| Q3 2025 | $83.3M |
| Q2 2025 | $71.2M |
| Q1 2025 | $151M |
| Q4 2024 | $108.9M |
| Q3 2024 | $132.9M |
STNE spent $552M buying back its own shares over the past year, up 19% from the year before.
AAOI Net Leverage
AAOI's operating earnings (EBITDA) were negative over the past year, so its debt can't be measured against them.
STNE Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q2 2026 | 1.4x | Healthy |
| Q1 2026 | 1.5x | Healthy |
| Q4 2025 | 2.2x | Moderate |
| Q3 2025 | 1.7x | Healthy |
| Q2 2025 | 1.4x | Healthy |
| Q1 2025 | 1.2x | Healthy |
| Q4 2024 | 1.2x | Healthy |
| Q3 2024 | 0.9x | Very low |
STNE's net debt is about 1.4 years of its operating earnings (EBITDA), about the same as a year ago.
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).
STNE Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 37.0 | Neutral |
| Stochastic | 11.0 | Oversold |
STNE's weekly RSI is 37 (neutral) and its Stochastic is 11 (oversold).
AAOI PE vs Technology Sector
AAOI has no meaningful PE right now: it lost money over the past year.
STNE PE vs Technology Sector
| Metric | STNE | Sector median | Relative |
|---|---|---|---|
| PE | 3.3x | 28x | 88% below |
| PE % | 1 | 35 | 34 pts below |
STNE is trading at 3.3x earnings, a 88% discount to the Technology sector's median of 28x, though its earnings don't support one.
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 STNE on trend strength, trading above more of its moving averages.
STNE Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $9.63 | 20% below |
| 20 week MA | $10.1 | 23% below |
| 50 week MA | $12.3 | 37% below |
| 100 week MA | $12.9 | 40% below |
| 200 week MA | $12.9 | 40% below |
STNE is in a downtrend: it's below all five of its weekly moving averages, and 40% 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 STNE on returns for 2026, with the stronger performance.
STNE Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $39.1 | $85.2 | +118% |
| 2021 | $85.2 | $17.4 | -80% |
| 2022 | $17.4 | $9.60 | -45% |
| 2023 | $9.60 | $18.0 | +88% |
| 2024 | $18.0 | $8.19 | -55% |
| 2025 | $8.19 | $14.8 | +81% |
| 2026 YTD | $14.8 | $7.72 | -48% |
STNE's yearly returns have swung widely, from +118% in 2020 to −80% in 2021. It's down 48% so far in 2026.