The WACC of Ciena Corp (CIEN) is 9.5%.
| Range | Selected | |
| Cost of equity | 8.50% - 11.80% | 10.15% |
| Tax rate | 17.90% - 19.80% | 18.85% |
| Cost of debt | 5.40% - 7.50% | 6.45% |
| WACC | 8.0% - 11.0% | 9.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.01 | 1.24 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.50% | 11.80% |
| Tax rate | 17.90% | 19.80% |
| Debt/Equity ratio | 0.15 | 0.15 |
| Cost of debt | 5.40% | 7.50% |
| After-tax WACC | 8.0% | 11.0% |
| Selected WACC | 9.5% | |