Billiontoone vs Castle Biosciences
Billiontoone and Castle Biosciences are similar in size: $305m and $344m of revenue in their latest fiscal years. Billiontoone grew faster (100.0% against 3.7%). Billiontoone kept more of each dollar of sales as profit: a net margin of 2.4% against -7.0%. Castle Biosciences carries less debt relative to equity (2.2% against 11.9%).
| Latest fiscal year | BilliontooneBLLN, 2025 | Castle BiosciencesCSTL, 2025 |
|---|---|---|
| Revenue | $305m | $344m |
| Revenue growth | 100.0% | 3.7% |
| Net income | $7.5m | −$24.2m |
| Operating margin | 5.3% | -12.4% |
| Net margin | 2.4% | -7.0% |
| Return on equity | 6.5% | -5.2% |
| Free cash flow | $15.7m | $28.3m |
| Cash | $496m | $117m |
| Total debt | $57.2m | $10.2m |
| Debt to equity | 11.9% | 2.2% |
| Dividend per share | — | — |
| Dividend yield | — | — |
| Share buybacks | $0 | — |
| Employees | 713 | 883 |
| Market value | $6.03bn | $1.07bn |
| Price vs our value range | — | — |
| Moat score | — | 32 (Weak) |
| Insider trades, 12 months | 11 buys, 169 sales | 0 buys, 170 sales |