CSTL
Castle Biosciences, Inc.
CSTL offers stronger fundamentals, but that advantage does not outweigh its weaker overall profile.
UNH
UnitedHealth Group Incorporated
UNH has a slight edge over CSTL overall, supported by lower modeled downside and stronger modeled upside.
CSTL Fundamentals
| Metric | Status |
|---|---|
| Healthy | |
| Under pressure | |
| Under pressure | |
| Strong |
CSTL's revenue and balance sheet are currently healthy, but its profitability and cash flow are under pressure.
UNH Fundamentals
| Metric | Status |
|---|---|
| Stable | |
| Stable | |
| Healthy | |
| Healthy |
UNH's cash flow and balance sheet are currently healthy, and its revenue and profitability are stable.
CSTL PE Valuation
CSTL has no meaningful PE right now: it lost money over the past year.
UNH PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Forward | 18x | $405 | — |
| Cheap | 19x | $325 | -20% |
| Fair | 23x | $410 | +1.2% |
| Current | 23x | $405 | — |
| Expensive | 30x | $526 | +30% |
Historical ranges are pointers, not guarantees.
UNH's PE is in its fair range at 23x. If earnings grow as analysts expect, today's price would be 18x next year's earnings, in its cheap range.
CSTL Forward outlook
| Metric | Outlook |
|---|---|
| -- | |
| Losses shrinking | |
| Strong growth | |
| Strongly improving | |
| Limited | |
| High |
CSTL has the edge over UNH on the outlook, with more favorable revenue expectations.
UNH Forward outlook
| Metric | Outlook |
|---|---|
| Strongly improving | |
| Strong growth | |
| Stable | |
| Improving | |
| Moderate | |
| Low |
Analysts expect UNH's earnings to grow and its profitability to improve, with its revenue holding steady. However, they disagree widely on these estimates.
CSTL Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Q3 2026 | -$0.75 | -$0.30 |
| Q2 2026 | -$0.64 | -$0.29 |
| Q1 2026 | -$0.42 | -$0.23 |
| Q4 2025 | -$0.83 | -234% |
| Q3 2025 | -$0.45 | -305% |
| Q2 2025 | -$0.35 | -$0.23 |
| Q1 2025 | -$0.19 | +$0.94 |
| Q4 2024 | $0.62 | +$2.76 |
CSTL is still losing money, but far less than before: $0.75 per share over the past year, against $3.35 at its worst in mid-2023.
UNH Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $22.65 | +29% |
| Q3 2026 | $17.55 | -8.5% |
| Q2 2026 | $15.58 | -33% |
| Q1 2026 | $13.28 | -44% |
| Q4 2025 | $13.23 | -15% |
| Q3 2025 | $19.17 | +25% |
| Q2 2025 | $23.09 | +53% |
| Q1 2025 | $23.89 | +46% |
| Q4 2024 | $15.51 | -35% |
UNH has the edge over CSTL on earnings quality, reporting a profit while its opponent remains loss making.
CSTL Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $102.9M | +24% |
| Q2 2026 | $103.5M | +20% |
| Q1 2026 | $83.7M | -4.9% |
| Q4 2025 | $87M | +0.8% |
| Q3 2025 | $83M | -3.2% |
| Q2 2025 | $86.2M | -0.9% |
| Q1 2025 | $88M | +21% |
| Q4 2024 | $86.3M | +31% |
CSTL's revenue is growing: $103M last quarter, up 24% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | -2.6% | +5.5 points |
| Q2 2026 | -3% | +2 points |
| Q1 2026 | -22% | +9.7 points |
| Q4 2025 | -4.4% | -9.1 points |
| Q3 2025 | -8.2% | -14 points |
| Q2 2025 | -4.9% | -11 points |
| Q1 2025 | -32% | -24 points |
| Q4 2024 | 4.7% | +13 points |
CSTL's operating margin was −2.6% last quarter, up 5.5 points from the same quarter a year ago.
UNH Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $112.7B | -0.4% |
| Q2 2026 | $112B | +0.4% |
| Q1 2026 | $111.7B | +2% |
| Q4 2025 | $113.2B | +12% |
| Q3 2025 | $113.2B | +12% |
| Q2 2025 | $111.6B | +13% |
| Q1 2025 | $109.6B | +9.8% |
| Q4 2024 | $100.8B | +6.8% |
UNH's revenue has held roughly level: $113B last quarter, about level with the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 5.8% | +2 points |
| Q2 2026 | 7.1% | +2.5 points |
| Q1 2026 | 8.1% | -0.3 points |
| Q4 2025 | 0.3% | -7.4 points |
| Q3 2025 | 3.8% | -4.8 points |
| Q2 2025 | 4.6% | -3.4 points |
| Q1 2025 | 8.3% | +0.4 points |
| Q4 2024 | 7.7% | -0.4 points |
UNH has the edge over CSTL on profitability, with a higher operating margin.
CSTL Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $12.2M | +57% |
| Q2 2026 | $6.6M | -43% |
| Q1 2026 | -$34.6M | -$23.8M |
| Q4 2025 | $19.7M | +18% |
| Q3 2025 | $7.8M | -54% |
| Q2 2025 | $11.6M | -38% |
| Q1 2025 | -$10.8M | +$5.2M |
| Q4 2024 | $16.8M | +14% |
CSTL still generates free cash flow, though less than at its 2025 peak: $4M over the past year.
UNH Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $4.3B | -16% |
| Q2 2026 | $10.3B | +63% |
| Q1 2026 | $8.1B | +79% |
| Q4 2025 | $160M | -89% |
| Q3 2025 | $5.1B | -61% |
| Q2 2025 | $6.3B | +6.9% |
| Q1 2025 | $4.6B | +1037% |
| Q4 2024 | $1.5B | +$7.6B |
UNH has the edge over CSTL on cash flow, with more consistent year-over-year improvement.
CSTL Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | +0.8% | +234K shares |
| 1 year | +5.4% | +1.6M shares |
| 3 years | +14% | +3.8M shares |
| 5 years | +21% | +5.3M shares |
| Available history | +64% | +11.9M shares |
CSTL has 31M diluted shares, up 5.4% from a year ago.
UNH Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -0.4% | -4M shares |
| 1 year | -0.7% | -6M shares |
| 3 years | -3.6% | -34M shares |
| 5 years | -5.5% | -53M shares |
| Available history | -6.6% | -64M shares |
UNH has the edge over CSTL on shareholder dilution, with a more favorable share count trend.
| Quarter | Spent |
|---|---|
| Q3 2026 | $3.4B |
| Q2 2026 | $1.6B |
| Q1 2026 | — |
| Q4 2025 | — |
| Q3 2025 | — |
| Q2 2025 | $2.5B |
| Q1 2025 | $3B |
| Q4 2024 | $5B |
UNH spent $5B buying back its own shares over the past year, down 52% from the year before.
CSTL Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2025 | -9.6x | Net Cash |
| Q2 2025 | -3.7x | Net Cash |
| Q1 2025 | -2.8x | Net Cash |
| Q4 2024 | -4.5x | Net Cash |
| Q3 2024 | -6.8x | Net Cash |
| Q2 2020 | -19.8x | Net Cash |
| Q1 2020 | -8.1x | Net Cash |
| Q4 2019 | -9.6x | Net Cash |
CSTL has more cash than debt.
UNH Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 1.7x | Healthy |
| Q2 2026 | 1.7x | Healthy |
| Q1 2026 | 2.2x | Moderate |
| Q4 2025 | 2.3x | Moderate |
| Q3 2025 | 1.7x | Healthy |
| Q2 2025 | 1.5x | Healthy |
| Q1 2025 | 1.3x | Healthy |
| Q4 2024 | 1.4x | Healthy |
UNH's net debt is about 1.7 years of its operating earnings (EBITDA), about the same as a year ago.
CSTL Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 57.0 | Neutral |
| Stochastic | 63.5 | Neutral |
CSTL's weekly RSI is 57 (neutral) and its Stochastic is 63 (neutral).
UNH Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 56.4 | Neutral |
| Stochastic | 60.0 | Neutral |
UNH's weekly RSI is 56 (neutral) and its Stochastic is 60 (neutral).
CSTL PE vs Healthcare Sector
| Metric | CSTL | Sector median | Relative |
|---|---|---|---|
| PE | N/A | 26x | — |
CSTL has no meaningful PE right now: it lost money over the past year.
UNH PE vs Healthcare Sector
| Metric | UNH | Sector median | Relative |
|---|---|---|---|
| PE | 23x | 26x | 11% below |
| PE % | 47 | 29 | 18 pts above |
UNH is trading at 23x earnings, a 11% discount to the Healthcare sector's median of 26x.
CSTL Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $34.4 | 0.3% above |
| 20 week MA | $31.5 | 9.6% above |
| 50 week MA | $30.0 | 15% above |
| 100 week MA | $26.4 | 31% above |
| 200 week MA | $24.4 | 41% above |
CSTL has the edge over UNH on trend strength, trading above more of its moving averages.
UNH Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $394.2 | 2.8% above |
| 20 week MA | $400.5 | 1.2% above |
| 50 week MA | $361.2 | 12% above |
| 100 week MA | $376.0 | 7.8% above |
| 200 week MA | $446.6 | 9.3% below |
UNH has bounced recently, but its long-term trend is still down: it's above its 8-, 20-, 50- and 100-week averages, but 9.3% below its 200-week average.
CSTL Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $34.0 | $71.3 | +110% |
| 2021 | $71.3 | $42.6 | -40% |
| 2022 | $42.6 | $23.2 | -45% |
| 2023 | $23.2 | $21.6 | -7.1% |
| 2024 | $21.6 | $26.8 | +24% |
| 2025 | $26.8 | $39.4 | +47% |
| 2026 YTD | $39.4 | $34.5 | -12% |
CSTL's yearly returns have swung widely, from +110% in 2020 to −45% in 2022. It's down 12% so far in 2026.
UNH Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $296.0 | $340.8 | +15% |
| 2021 | $340.8 | $495.4 | +45% |
| 2022 | $495.4 | $531.3 | +7.3% |
| 2023 | $531.3 | $526.5 | -0.9% |
| 2024 | $526.5 | $510.0 | -3.1% |
| 2025 | $510.0 | $331.8 | -35% |
| 2026 YTD | $331.8 | $405.1 | +22% |
UNH has the edge over CSTL on returns for 2026, with the stronger performance.