The WACC of Ciena Corp (CIEN) is 7.3%.
| Range | Selected | |
| Cost of equity | 6.10% - 9.00% | 7.55% |
| Tax rate | 18.90% - 21.00% | 19.95% |
| Cost of debt | 5.80% - 7.50% | 6.65% |
| WACC | 6.0% - 8.7% | 7.3% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.49 | 0.74 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.10% | 9.00% |
| Tax rate | 18.90% | 21.00% |
| Debt/Equity ratio | 0.13 | 0.13 |
| Cost of debt | 5.80% | 7.50% |
| After-tax WACC | 6.0% | 8.7% |
| Selected WACC | 7.3% | |