AAOI
Applied Optoelectronics, Inc.
AAOI offers stronger modeled upside, but that advantage does not outweigh its weaker overall profile.
TENB
Tenable Holdings, Inc.
TENB 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.
TENB Fundamentals
| Metric | Status |
|---|---|
| Stable | |
| Healthy | |
| Strong | |
| Strong |
TENB'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.
TENB PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Forward | 17x | $41.05 | — |
| Current | 316x | $41.05 | — |
| Cheap | 491x | $63.83 | +55% |
| Fair | 697x | $90.55 | +121% |
| Expensive | 759x | $98.71 | +140% |
Historical ranges are pointers, not guarantees.
TENB's PE is 316x, 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 |
Analysts expect AAOI to return to profit, with revenue growing. However, they disagree widely on these estimates.
TENB Forward outlook
| Metric | Outlook |
|---|---|
| Strongly improving | |
| Strong growth | |
| Growth | |
| Strongly improving | |
| Moderate | |
| Low |
Analysts expect earnings and revenue growth for TENB, 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.
TENB Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $2.37 | +1719% |
| Q3 2026 | $0.13 | +$0.41 |
| Q2 2026 | $0.05 | +$0.43 |
| Q1 2026 | -$0.10 | +$0.28 |
| Q4 2025 | -$0.30 | +$0.01 |
| Q3 2025 | -$0.28 | +$0.23 |
| Q2 2025 | -$0.38 | +$0.18 |
| Q1 2025 | -$0.38 | +$0.20 |
| Q4 2024 | -$0.31 | +$0.37 |
TENB 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 TENB 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.
TENB Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $276.4M | +9.5% |
| Q2 2026 | $268.5M | +8.6% |
| Q1 2026 | $262.1M | +9.6% |
| Q4 2025 | $260.5M | +11% |
| Q3 2025 | $252.4M | +11% |
| Q2 2025 | $247.3M | +12% |
| Q1 2025 | $239.1M | +11% |
| Q4 2024 | $235.7M | +11% |
TENB's revenue has grown year over year every quarter since late 2020: $276M last quarter, up 9.5% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 6% | +3.2 points |
| Q2 2026 | 4.6% | +7.6 points |
| Q1 2026 | 3.3% | +11 points |
| Q4 2025 | 3.4% | -2.1 points |
| Q3 2025 | 2.8% | +3.8 points |
| Q2 2025 | -3% | +1 points |
| Q1 2025 | -7.4% | -3.3 points |
| Q4 2024 | 5.5% | +12 points |
TENB 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.
TENB Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $69M | +30% |
| Q2 2026 | $43.3M | +14% |
| Q1 2026 | $85.4M | +5.6% |
| Q4 2025 | $82.7M | +4.9% |
| Q3 2025 | $53M | -1.7% |
| Q2 2025 | $38.1M | +23% |
| Q1 2025 | $80.9M | +63% |
| Q4 2024 | $78.8M | +107% |
TENB 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.
TENB Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +1.9% | +2.2M shares |
| 1 year | -4.9% | -6M shares |
| 3 years | 0% | +16K shares |
| 5 years | +8.5% | +9.1M shares |
| Available history | +21% | +20M shares |
TENB has the edge over AAOI on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q3 2026 | $223.8M |
| Q2 2026 | $100M |
| Q1 2026 | $130.2M |
| Q4 2025 | $62.5M |
| Q3 2025 | $60M |
| Q2 2025 | $65M |
| Q1 2025 | $60M |
| Q4 2024 | $50M |
TENB spent $517M buying back its own shares over the past year, up 120% 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.
TENB Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | -3.6x | Net Cash |
| Q2 2026 | -1.6x | Net Cash |
| Q1 2026 | -2.3x | Net Cash |
| Q4 2025 | -5.7x | Net Cash |
| Q3 2025 | -4.8x | Net Cash |
| Q2 2025 | -7.4x | Net Cash |
| Q1 2025 | -12.2x | Net Cash |
| Q4 2024 | -12.5x | Net Cash |
TENB has more cash than debt.
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).
TENB Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 55.8 | Neutral |
| Stochastic | 63.5 | Neutral |
TENB's weekly RSI is 56 (neutral) and its Stochastic is 63 (neutral).
AAOI PE vs Technology Sector
AAOI has no meaningful PE right now: it lost money over the past year.
TENB PE vs Technology Sector
| Metric | TENB | Sector median | Relative |
|---|---|---|---|
| PE | 316x | 28x | 1,033% above |
TENB is trading at 316x earnings, a 1033% premium 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 fallen below most of its moving averages, though it's still 43% above its 200-week average.
TENB Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $41.0 | 0.2% above |
| 20 week MA | $37.9 | 8.4% above |
| 50 week MA | $28.7 | 43% above |
| 100 week MA | $31.0 | 33% above |
| 200 week MA | $37.2 | 10% above |
TENB has the edge over AAOI on trend strength, trading above more of its moving averages.
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's yearly returns have swung widely, from +891% in 2023 to −65% in 2022. It's up 42% so far in 2026.
TENB Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $23.5 | $54.7 | +133% |
| 2021 | $54.7 | $55.4 | +1.3% |
| 2022 | $55.4 | $36.9 | -33% |
| 2023 | $36.9 | $46.1 | +25% |
| 2024 | $46.1 | $39.5 | -14% |
| 2025 | $39.5 | $24.1 | -39% |
| 2026 YTD | $24.1 | $41.1 | +70% |
TENB has the edge over AAOI on returns for 2026, with the stronger performance.