ONTO
Onto Innovation Inc.
ONTO has lower modeled downside risk, despite its lower overall score.
SNDK
Sandisk Corporation
SNDK has the edge over ONTO overall, supported by stronger fundamentals and stronger valuation.
ONTO Fundamentals
| Metric | Status |
|---|---|
| Strong | |
| Healthy | |
| Healthy | |
| Under pressure |
ONTO's revenue, profitability and cash flow are currently healthy, but its balance sheet is under pressure.
SNDK Fundamentals
| Metric | Status |
|---|---|
| Strong | |
| Strong | |
| Strong | |
| Strong |
SNDK's revenue, profitability, cash flow and balance sheet are all currently strong.
ONTO PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Forward | 17x | $210 | — |
| Cheap | 22x | $66.59 | -68% |
| Fair | 43x | $130 | -38% |
| Current | 69x | $210 | — |
| Expensive | 82x | $249 | +19% |
Historical ranges are pointers, not guarantees.
ONTO's PE is in its expensive range at 69x. If earnings grow as analysts expect, today's price would be 17x next year's earnings, in its cheap range.
SNDK PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Forward | 3.8x | $937 | — |
| Current | 7.5x | $937 | — |
| Cheap | 17x | $2,173 | +132% |
| Fair | 24x | $3,048 | +225% |
| Expensive | 59x | $7,452 | +695% |
Historical ranges are pointers, not guarantees.
SNDK has the edge over ONTO in the historical PE scenario, which offers more potential upside but is not a forecast.
ONTO Forward outlook
| Metric | Outlook |
|---|---|
| Strongly improving | |
| Strong growth | |
| Strong growth | |
| Strongly improving | |
| Limited | |
| Low |
Analysts expect strong earnings and revenue growth for ONTO, with profitability improving. However, they disagree widely on these estimates.
SNDK Forward outlook
| Metric | Outlook |
|---|---|
| Strongly improving | |
| Strong growth | |
| Strong growth | |
| Strongly improving | |
| Moderate | |
| High |
Analysts expect strong earnings and revenue growth for SNDK, with profitability improving.
ONTO Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $11.99 | +293% |
| Q3 2026 | $3.05 | -14% |
| Q2 2026 | $2.67 | -34% |
| Q1 2026 | $2.15 | -51% |
| Q4 2025 | $2.78 | -32% |
| Q3 2025 | $3.54 | -4.1% |
| Q2 2025 | $4.04 | +21% |
| Q1 2025 | $4.42 | +57% |
| Q4 2024 | $4.06 | +65% |
ONTO's earnings per share have fallen from their peak: $3.05 over the past year, against $4.49 in late 2022.
SNDK Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $247.30 | +97% |
| Q3 2026 | $125.61 | +$137.63 |
| Q2 2026 | $73.76 | +$85.07 |
| Q2 2025 | -$11.31 | -$6.65 |
SNDK has the edge over ONTO in the latest year-over-year earnings comparison.
ONTO Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $409.7M | +88% |
| Q2 2026 | $343.1M | +35% |
| Q1 2026 | $291.9M | +9.5% |
| Q4 2025 | $266.9M | +1.1% |
| Q3 2025 | $218.2M | -13% |
| Q2 2025 | $253.6M | +4.7% |
| Q1 2025 | $266.6M | +17% |
| Q4 2024 | $263.9M | +21% |
ONTO's revenue has grown year over year for four quarters in a row: $410M last quarter, up 88% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 23% | +12 points |
| Q2 2026 | 19% | +5.8 points |
| Q1 2026 | 11% | -12 points |
| Q4 2025 | 5.2% | -11 points |
| Q3 2025 | 11% | -10 points |
| Q2 2025 | 13% | -7.4 points |
| Q1 2025 | 24% | +5 points |
| Q4 2024 | 16% | +3.2 points |
ONTO's operating margin was 23% last quarter, up 12 points from the same quarter a year ago.
SNDK Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $11B | +378% |
| Q2 2026 | $9B | +372% |
| Q1 2026 | $6B | +251% |
| Q4 2025 | $3B | +61% |
| Q3 2025 | $2.3B | +23% |
| Q2 2025 | $1.9B | +8% |
| Q1 2025 | $1.7B | -0.6% |
| Q4 2024 | $1.9B | +13% |
SNDK has the edge over ONTO on sales, with stronger typical year-over-year growth.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 80% | +72 points |
| Q2 2026 | 78% | +78 points |
| Q1 2026 | 69% | +180 points |
| Q4 2025 | 35% | +25 points |
| Q3 2025 | 7.6% | -9 points |
| Q2 2025 | 0.9% | N/A |
| Q1 2025 | -111% | -122 points |
| Q4 2024 | 10% | +6.6 points |
SNDK has the edge over ONTO on profitability, with a higher operating margin.
ONTO Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $77.2M | -5.9% |
| Q2 2026 | $57.9M | +31% |
| Q1 2026 | $22.7M | -73% |
| Q4 2025 | $89.9M | +75% |
| Q3 2025 | $82M | +39% |
| Q2 2025 | $44.2M | -17% |
| Q1 2025 | $83.7M | +67% |
| Q4 2024 | $51.4M | -13% |
ONTO's free cash flow has been positive every quarter for seven years: $248M over the past year, down 5.2% from the year before.
SNDK Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $6.3B | +1340% |
| Q2 2026 | $7.1B | +14355% |
| Q1 2026 | $3B | +$3B |
| Q3 2025 | $438M | +$636M |
| Q2 2025 | $49M | +$217M |
| Q1 2025 | -$18M | +$23M |
| Q3 2024 | -$198M | -$157M |
SNDK has the edge over ONTO on cash flow, with more consistent year-over-year improvement.
ONTO Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -0.9% | -426K shares |
| 1 year | +0.3% | +150K shares |
| 3 years | -0.3% | -145K shares |
| 5 years | -1% | -506K shares |
| Available history | +13% | +5.6M shares |
ONTO has the edge over SNDK on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q3 2026 | — |
| Q2 2026 | $205M |
| Q1 2026 | — |
| Q4 2025 | — |
| Q3 2025 | — |
| Q2 2025 | — |
| Q1 2025 | $75M |
| Q4 2024 | $25.1M |
ONTO spent $205M buying back its own shares over the past year, up 105% from the year before.
SNDK Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -0.6% | -1M shares |
| 1 year | +3.4% | +5M shares |
| 3 years | +6.9% | +10M shares |
SNDK has 154M diluted shares, up 3.4% from a year ago.
| Quarter | Spent |
|---|---|
| Q3 2026 | $5B |
| Q3 2024 | — |
| Q2 2024 | — |
| Q1 2024 | — |
| Q4 2023 | — |
| Q3 2023 | — |
ONTO Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 3.6x | Elevated |
| Q2 2026 | 1.0x | Healthy |
| Q1 2026 | -1.4x | Net Cash |
| Q4 2025 | -1.8x | Net Cash |
| Q3 2025 | -2.8x | Net Cash |
| Q2 2025 | -0.9x | Net Cash |
| Q1 2025 | -0.8x | Net Cash |
| Q4 2024 | -0.9x | Net Cash |
ONTO's net debt is about 3.6 years of its operating earnings (EBITDA), after holding more cash than debt a year ago.
SNDK Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | -0.2x | Net Cash |
| Q2 2026 | -0.4x | Net Cash |
| Q1 2026 | -0.7x | Net Cash |
SNDK has the edge over ONTO on leverage, with a lower net debt burden relative to earnings.
ONTO Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 43.4 | Neutral |
| Stochastic | 13.5 | Oversold |
ONTO's weekly RSI is 43 (neutral) and its Stochastic is 14 (oversold).
SNDK Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 40.2 | Neutral |
| Stochastic | 10.6 | Oversold |
SNDK's weekly RSI is 40 (neutral) and its Stochastic is 11 (oversold).
ONTO PE vs Technology Sector
| Metric | ONTO | Sector median | Relative |
|---|---|---|---|
| PE | 69x | 28x | 147% above |
| PE % | 74 | 35 | 39 pts above |
ONTO is trading at 69x earnings, a 147% premium to the Technology sector's median of 28x.
SNDK PE vs Technology Sector
| Metric | SNDK | Sector median | Relative |
|---|---|---|---|
| PE | 7.5x | 28x | 73% below |
| PE % | 4 | 27 | 23 pts below |
SNDK has the edge over ONTO on valuation relative to its sector.
ONTO Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $239.2 | 12% below |
| 20 week MA | $268.5 | 22% below |
| 50 week MA | $246.0 | 15% below |
| 100 week MA | $187.8 | 12% above |
| 200 week MA | $169.1 | 24% above |
ONTO has stronger trend alignment. ONTO is above 2 of 5 weekly averages versus SNDK above 0 of 3.
SNDK Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $1,317.5 | 29% below |
| 20 week MA | $1,465.4 | 36% below |
| 50 week MA | $1,119.6 | 16% below |
SNDK is in a downtrend: it's below all three of its weekly moving averages, and 16% below its 50-week average.
ONTO Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $36.3 | $48.0 | +32% |
| 2021 | $48.0 | $99.1 | +106% |
| 2022 | $99.1 | $67.9 | -32% |
| 2023 | $67.9 | $152.9 | +125% |
| 2024 | $152.9 | $170.7 | +12% |
| 2025 | $170.7 | $160.6 | -5.9% |
| 2026 YTD | $160.6 | $209.7 | +31% |
ONTO has finished higher in four of the last six years, two of them by more than 50%. It's up 31% so far in 2026.
SNDK Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2025 | $50.4 | $250.1 | +396% |
| 2026 YTD | $250.1 | $937.5 | +275% |
SNDK has the edge over ONTO on returns for 2026, with the stronger performance.