The WACC of Spero Therapeutics Inc (SPRO) is 8.3%.
| Range | Selected | |
| Cost of equity | 10.90% - 15.00% | 12.95% |
| Tax rate | 26.20% - 27.00% | 26.60% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 7.3% - 9.3% | 8.3% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.54 | 1.82 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 10.90% | 15.00% |
| Tax rate | 26.20% | 27.00% |
| Debt/Equity ratio | 1 | 1 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 7.3% | 9.3% |
| Selected WACC | 8.3% | |