The WACC of Ciena Corp (CIEN) is 8.8%.
| Range | Selected | |
| Cost of equity | 7.90% - 11.20% | 9.55% |
| Tax rate | 17.90% - 19.80% | 18.85% |
| Cost of debt | 5.40% - 7.00% | 6.20% |
| WACC | 7.3% - 10.3% | 8.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.88 | 1.13 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.90% | 11.20% |
| Tax rate | 17.90% | 19.80% |
| Debt/Equity ratio | 0.19 | 0.19 |
| Cost of debt | 5.40% | 7.00% |
| After-tax WACC | 7.3% | 10.3% |
| Selected WACC | 8.8% | |