The company maintains a conservative capital structure with a stable debt-to-equity ratio of 0.54 and a healthy current ratio of 2.73 as of 2026Q2.
| Metric | TTM | Nov'25 | Nov'24 | Oct'23 | Oct'22 | Oct'21 | Oct'20 | Oct'19 | Oct'18 | Oct'17 | Oct'16 | Oct'15 | Oct'14 | Oct'13 | Oct'12 | Oct'11 | Oct'10 | Oct'09 | Oct'08 | Oct'07 | Oct'06 | Oct'05 | Oct'04 | Oct'03 | Oct'02 | Oct'01 | Oct'00 | Oct'99 | Oct'98 | Oct'97 |
|---|
| Total Current Assets | 3.57B | 3.57B | 3.52B | 3.55B | 3.39B | 3.17B | 2.6B | 2.37B | 2.12B | 1.98B | 1.99B | 1.84B | 1.67B | 1.37B | 1.4B | 1.31B | 1.43B | 1.3B | 1.18B | 1.96B | 1.1B | 1.1B | 1.08B | 1.23B | 1.64B | 2.19B | 813.01M | 533M | 428M | 378.6M |
| Cash & Short-Term Investments | 1.2B | 1.31B | 1.25B | 1.12B | 1.15B | 1.6B | 1.24B | 1.01B | 894.4M | 919.65M | 1.05B | 926.08M | 726.92M | 471.47M | 692.5M | 541.9M | 688.69M | 1.05B | 917M | 1.71B | 848.56M | 952.31M | 955.87M | 1.11B | 1.51B | 1.3B | 238.32M | 262.4M | 227.4M | 263.1M |
| Cash Only | 1.05B | 1.09B | 934.86M | 1.01B | 994.35M | 1.42B | 1.09B | 904.04M | 745.42M | 640.51M | 777.62M | 790.97M | 586.72M | 346.49M | 642.44M | 541.9M | 688.69M | 485.7M | 550.67M | 892.06M | 220.16M | 372.78M | 202.62M | 309.67M | 377.19M | 397.89M | 143.19M | 143.4M | 227.4M | 263.1M |
| Short-Term Investments | 157.71M | 216.15M | 316.34M | 104.75M | 153.99M | 181.48M | 150.67M | 109.94M | 148.98M | 279.13M | 275.25M | 135.11M | 140.21M | 124.98M | 50.06M | 0 | 0 | 563.18M | 366.34M | 822.18M | 628.39M | 579.53M | 753.25M | 796.81M | 1.13B | 902.59M | 95.13M | 119M | 0 | 0 |
| Accounts Receivable | 1.05B | 975.86M | 1.25B | 1.19B | 1.1B | 1B | 827.23M | 837.04M | 812.84M | 633.89M | 584.37M | 579.25M | 529.66M | 500.57M | 354.19M | 423.76M | 350.27M | 121.2M | 142.41M | 112.85M | 118.64M | 86.33M | 45.88M | 43.6M | 28.68M | 395.06M | 248.95M | 144.3M | 85.5M | 63.2M |
| Days Sales Outstanding | 70.98 | 74.68 | 113.62 | 98.82 | 110.61 | 101.29 | 85.48 | 85.53 | 95.88 | 82.58 | 82.02 | 86.45 | 84.49 | 87.73 | 70.49 | 88.79 | 103.38 | 67.78 | 57.6 | 52.82 | 76.77 | 73.75 | 56.06 | 56.21 | 28.99 | 89.94 | 105.81 | 109.25 | 61.42 | 55.83 |
| Inventory | 808.45M | 826.24M | 820.43M | 1.05B | 946.73M | 374.26M | 344.38M | 345.05M | 262.75M | 267.14M | 211.25M | 191.16M | 254.66M | 249.1M | 260.1M | 230.08M | 261.62M | 88.09M | 93.45M | 102.62M | 106.08M | 49.33M | 47.61M | 44.99M | 47.02M | 254.97M | 141.28M | 79.6M | 70.9M | 41.1M |
| Days Inventory Outstanding | 96.11 | 109.09 | 130.46 | 152.95 | 166.75 | 71.95 | 66.89 | 62.04 | 53.89 | 62.67 | 53.58 | 50.93 | 69.37 | 74.69 | 85.55 | 81.31 | 129.19 | 87.42 | 75.54 | 89.71 | 126.43 | 61.86 | 76.58 | 78.17 | 28.8 | 102.88 | 124.93 | 117.34 | 116.46 | 96.04 |
| Other Current Assets | 504.31M | 455.32M | 45.39M | 41.8M | 70.57M | 44.3M | 44.88M | 40.47M | 37.62M | 40.94M | 42.43M | 41.7M | 43.95M | 33.38M | 33.14M | 47M | 59.64M | 12.47M | 0 | 0 | 0 | 0 | 29.91M | 0 | 0 | 186.86M | 184.47M | 46.7M | 44.2M | 11.2M |
| Total Non-Current Assets | 2.47B | 2.3B | 2.1B | 2.03B | 1.68B | 1.68B | 1.57B | 1.51B | 1.61B | 1.95B | 869.25M | 830.84M | 379.44M | 406.97M | 465.45M | 618.58M | 676.52M | 198.62M | 839.81M | 447.51M | 741.53M | 573.31M | 1.06B | 1.15B | 1.11B | 1.13B | 214.19M | 144.8M | 144.4M | 68.6M |
| Property, Plant & Equipment | 38.46M | 38.61M | 365.14M | 315.29M | 312.89M | 329.25M | 329.4M | 286.88M | 292.07M | 308.46M | 288.41M | 191.97M | 126.63M | 119.73M | 123.58M | 122.56M | 120.29M | 61.87M | 59.97M | 46.67M | 29.43M | 28.09M | 51.25M | 114.93M | 196.95M | 331.49M | 189.23M | 125.3M | 123.4M | 67.4M |
| Fixed Asset Turnover | 141.08x | 123.52x | 11.00x | 13.91x | 11.61x | 11.00x | 10.72x | 12.45x | 10.59x | 9.08x | 9.02x | 12.74x | 18.07x | 17.39x | 14.84x | 14.21x | 10.28x | 10.55x | 15.05x | 16.71x | 19.17x | 15.21x | 5.83x | 2.46x | 1.83x | 4.84x | 4.54x | 3.85x | 4.12x | 6.13x |
| Goodwill | 520.4M | 521.2M | 444.71M | 444.76M | 328.32M | 311.64M | 310.85M | 297.94M | 297.97M | 267.46M | 266.97M | 256.43M | 0 | 0 | 0 | 0 | 0 | 0 | 455.67M | 232.01M | 232.01M | 232.01M | 408.62M | 0 | 212.5M | 178.89M | 0 | 0 | 0 | 0 |
| Intangible Assets | 202.19M | 224.21M | 165.02M | 205.63M | 69.52M | 65.31M | 96.65M | 112.78M | 148.22M | 101M | 146.71M | 202.67M | 128.68M | 185.83M | 257.14M | 331.63M | 426.41M | 60.82M | 92.25M | 67.14M | 91.27M | 120.32M | 208.01M | 444.45M | 62.46M | 47.87M | 9.05M | 12.6M | 16.3M | 0 |
| Long-Term Investments | 391.52M | 57.14M | 80.92M | 134.28M | 35.38M | 70.04M | 82.23M | 10.01M | 58.97M | 49.78M | 90.17M | 95.11M | 50.06M | 15.03M | 420K | 50.26M | 0 | 8.03M | 156M | 34M | 351M | 156M | 329.7M | 519.74M | 570.86M | 494.66M | 0 | 0 | 0 | 0 |
| Other Non-Current Assets | 636.15M | 573.1M | 154.69M | 116.45M | 113.62M | 99.89M | 102.83M | 88.99M | 71.65M | 63.59M | 75.87M | 84.66M | 74.08M | 86.38M | 84.74M | 114.12M | 129.82M | 67.9M | 231.92M | 101.68M | 388.81M | 192.88M | 389.9M | 589.38M | 641.46M | -113.56M | 15.91M | 6.9M | 4.7M | 1.2M |
| Total Assets | 6.04B | 5.86B | 5.64B | 5.6B | 5.07B | 4.87B | 4.18B | 3.89B | 3.76B | 3.95B | 2.88B | 2.7B | 2.07B | 1.8B | 1.88B | 1.95B | 2.12B | 1.5B | 2.02B | 2.42B | 1.84B | 1.68B | 2.14B | 2.38B | 2.75B | 3.32B | 1.03B | 677.8M | 572.4M | 447.2M |
| Asset Turnover | 0.95x | 0.81x | 0.71x | 0.78x | 0.72x | 0.74x | 0.84x | 0.92x | 0.82x | 0.71x | 0.90x | 0.91x | 1.10x | 1.16x | 0.97x | 0.89x | 0.58x | 0.43x | 0.45x | 0.32x | 0.31x | 0.26x | 0.14x | 0.12x | 0.13x | 0.48x | 0.84x | 0.71x | 0.89x | 0.92x |
| Asset Growth % | 19.52% | 3.96% | 0.71% | 10.49% | 4.2% | 16.37% | 7.39% | 3.64% | -4.94% | 37.1% | 6.95% | 30.03% | 14.97% | -4.17% | -3.6% | -7.87% | 40.79% | -25.69% | -16.21% | 31.34% | 9.82% | -21.61% | -10.14% | -13.55% | -17.07% | 222.95% | 51.55% | 18.41% | 28% | - |
| Total Current Liabilities | 1.31B | 1.31B | 999.84M | 932.02M | 1.04B | 909.03M | 760.7M | 845.94M | 963M | 1.04B | 891.86M | 667.03M | 781.14M | 615.05M | 684.97M | 453.49M | 469.94M | 198.83M | 179.34M | 730.39M | 161.6M | 178.46M | 158.58M | 186.2M | 223.82M | 254.38M | 173.34M | 105.5M | 61.9M | 53.6M |
| Accounts Payable | 606.6M | 542.84M | 423.4M | 317.83M | 516.05M | 356.18M | 291.9M | 344.82M | 340.58M | 260.1M | 235.94M | 222.14M | 209.78M | 254.85M | 179.7M | 157.12M | 200.62M | 53.1M | 44.76M | 55.39M | 39.28M | 43.87M | 31.51M | 44.4M | 39.84M | 68.73M | 70.25M | 34.4M | 27.9M | 24.8M |
| Days Payables Outstanding | 62.18 | 71.67 | 67.33 | 46.26 | 90.89 | 68.47 | 56.7 | 62 | 69.85 | 61.02 | 59.85 | 59.18 | 57.14 | 76.41 | 59.11 | 55.52 | 99.07 | 52.7 | 36.18 | 48.42 | 46.81 | 55.01 | 50.67 | 77.14 | 24.4 | 27.74 | 62.12 | 50.71 | 45.83 | 57.95 |
| Short-Term Debt | 11.58M | 11.58M | 11.7M | 11.7M | 6.93M | 6.93M | 6.93M | 7M | 7M | 352.29M | 236.24M | 2.5M | 190.06M | 0 | 216.21M | 0 | 0 | 0 | 0 | 542.26M | 0 | 0 | 0 | 0 | 948K | 995K | 712K | 1M | 0 | 0 |
| Deferred Revenue (Current) | 933.94M | 208.94M | 156.38M | 154.42M | 137.9M | 118.01M | 108.7M | 111.38M | 111.13M | 102.42M | 109.01M | 126.11M | 104.69M | 88.55M | 79.52M | 99.37M | 75.33M | 40.56M | 36.77M | 33.02M | 19.64M | 27.82M | 21.57M | 14.47M | 15.39M | 29.48M | 0 | 0 | 0 | 0 |
| Other Current Liabilities | 0 | 227.97M | 168.3M | 222.09M | 192.82M | 159.77M | 168.89M | 175.32M | 317.96M | 275.77M | 165.23M | 167.71M | 151.49M | 230.27M | 131.07M | 117.39M | 134.19M | 0 | 62.61M | 8.79M | 23.41M | 30.29M | 29.46M | 28.4M | 35.05M | 22.09M | 102.38M | 70.1M | 34M | 28.8M |
| Current Ratio | 2.73x | 2.73x | 3.52x | 3.81x | 3.25x | 3.48x | 3.42x | 2.80x | 2.20x | 1.91x | 2.24x | 2.76x | 2.13x | 2.23x | 2.04x | 2.90x | 3.05x | 6.55x | 6.58x | 2.69x | 6.80x | 6.15x | 6.81x | 6.60x | 7.32x | 8.61x | 4.69x | 5.05x | 6.91x | 7.06x |
| Quick Ratio | 2.11x | 2.09x | 2.70x | 2.68x | 2.34x | 3.07x | 2.96x | 2.39x | 1.93x | 1.65x | 2.00x | 2.47x | 1.81x | 1.83x | 1.66x | 2.39x | 2.50x | 6.10x | 6.06x | 2.55x | 6.14x | 5.87x | 6.51x | 6.36x | 7.11x | 7.61x | 3.88x | 4.30x | 5.77x | 6.30x |
| Cash Conversion Cycle | 104.91 | 112.1 | 176.75 | 205.51 | 186.47 | 104.76 | 95.67 | 85.57 | 79.92 | 84.23 | 75.76 | 78.2 | 96.71 | 86.01 | 96.94 | 114.58 | 133.51 | 102.5 | 96.96 | 94.11 | 156.39 | 80.6 | 81.96 | 57.24 | 33.38 | 165.09 | 168.62 | 175.88 | 132.05 | 93.92 |
| Total Non-Current Liabilities | 1.84B | 1.83B | 1.83B | 1.82B | 1.32B | 936.18M | 910.62M | 874.64M | 864.19M | 777.63M | 1.22B | 1.41B | 1.36B | 1.27B | 1.29B | 1.48B | 1.49B | 849.72M | 846.31M | 835.73M | 924.48M | 761.4M | 824.05M | 861.15M | 999.93M | 933.94M | 44.03M | 41.8M | 35.6M | 30M |
| Long-Term Debt | 1.52B | 1.52B | 1.53B | 1.54B | 1.06B | 670.36M | 676.36M | 680.41M | 686.45M | 583.69M | 1.03B | 1.27B | 1.27B | 1.21B | 1.23B | 1.44B | 1.44B | 798M | 798M | 800M | 842.26M | 648.75M | 690M | 730.43M | 848.63M | 869.87M | 4.88M | 4.9M | 0 | 0 |
| Capital Lease Obligations | 133.11M | 32.52M | 68.63M | 81.45M | 95.57M | 104.15M | 122.98M | 65.28M | 68.25M | 73.41M | 24.3M | 13.79M | 4.59M | 0 | 0 | 0 | 16.43M | 16.35M | 8.09M | 0 | 32.78M | 41.36M | 0 | 61.31M | 0 | 0 | 0 | 0 | 0 | 0 |
| Deferred Tax Liabilities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -14.55M | 151.31M | 64.07M | 39.15M | 37M | 34.1M | 28.2M |
| Other Non-Current Liabilities | 185M | 175.43M | 142.42M | 122.22M | 97.16M | 104.22M | 61.62M | 83.46M | 51.17M | 37.94M | 100.1M | 58.75M | 40.8M | 34.75M | 31.78M | 17.26M | 0 | 0 | 2.56M | 5.11M | 49.44M | 55.58M | 118.04M | 69.41M | -15.44M | 0 | 0 | -100K | 1.5M | 1.8M |
| Total Liabilities | 3.15B | 3.14B | 2.83B | 2.75B | 2.36B | 1.85B | 1.67B | 1.72B | 1.83B | 1.82B | 2.12B | 2.07B | 2.14B | 1.89B | 1.97B | 1.94B | 1.96B | 1.05B | 1.03B | 1.57B | 1.09B | 939.86M | 982.63M | 1.05B | 1.22B | 1.19B | 217.37M | 147.3M | 97.5M | 83.6M |
| Total Debt | 1.58B | 1.58B | 1.63B | 1.66B | 1.19B | 803.68M | 828.14M | 755.45M | 693.45M | 935.98M | 1.29B | 1.27B | 1.46B | 1.21B | 1.44B | 1.44B | 1.46B | 806.55M | 798M | 1.34B | 875.05M | 648.75M | 690M | 791.74M | 849.57M | 870.86M | 5.59M | 5.9M | 0 | 0 |
| Net Debt | 530.38M | 490.26M | 697.39M | 646.55M | 191.95M | -618.86M | -260.49M | -148.59M | -51.97M | 295.47M | 511.24M | 483.17M | 878.13M | 865.53M | 799.57M | 900.47M | 770.45M | 320.85M | 247.33M | 450.2M | 654.88M | 275.97M | 487.38M | 482.07M | 472.38M | 472.97M | -137.59M | -137.5M | -227.4M | -263.1M |
| Debt / Equity | 0.54x | 0.58x | 0.58x | 0.58x | 0.44x | 0.27x | 0.33x | 0.35x | 0.36x | 0.44x | 1.68x | 2.05x | - | - | - | 103.97x | 9.16x | 1.77x | 0.80x | 1.58x | 1.16x | 0.88x | 0.60x | 0.59x | 0.56x | 0.41x | 0.01x | 0.01x | - | - |
| Debt / EBITDA | 2.15x | 3.51x | 5.03x | 3.14x | 2.98x | 1.28x | 1.34x | 1.61x | 2.04x | 2.77x | 4.33x | 5.39x | 9.24x | 9.68x | 26.83x | - | - | - | 10.17x | 17.54x | 66.01x | - | - | - | - | 2.81x | 0.03x | 0.13x | - | - |
| Net Debt / EBITDA | 0.72x | 1.09x | 2.15x | 1.23x | 0.48x | -0.99x | -0.42x | -0.32x | -0.15x | 0.88x | 1.72x | 2.05x | 5.54x | 6.91x | 14.88x | - | - | - | 3.15x | 5.88x | 49.40x | - | - | - | - | 1.53x | -0.84x | -3.04x | -1.44x | -1.32x |
| Interest Coverage | 6.29x | 2.70x | 2.22x | 4.48x | 4.45x | 15.75x | 15.56x | 9.36x | 3.69x | 3.80x | 2.53x | 1.46x | 0.43x | -0.82x | -2.40x | -3.95x | -16.81x | -77.65x | 4.21x | - | - | - | - | - | - | - | - | - | - | - |
| Total Equity | 2.89B | 2.73B | 2.82B | 2.85B | 2.71B | 3.02B | 2.51B | 2.17B | 1.93B | 2.14B | 766.34M | 620.88M | -69.61M | -82.68M | -88.97M | 13.87M | 159.29M | 455.84M | 998.95M | 850.15M | 753.63M | 735.37M | 1.15B | 1.33B | 1.53B | 2.13B | 809.84M | 530.5M | 474.9M | 363.6M |
| Equity Growth % | -2.53% | -3.08% | -1.13% | 4.99% | -10.17% | 20.34% | 15.5% | 12.62% | -9.69% | 178.77% | 23.43% | 991.87% | 15.8% | 7.08% | -741.33% | -91.29% | -65.05% | -54.37% | 17.5% | 12.81% | 2.48% | -36.3% | -13.25% | -12.86% | -28.26% | 162.89% | 52.65% | 11.71% | 30.61% | - |
| Book Value per Share | 19.77 | 18.79 | 19.29 | 19.07 | 17.83 | 19.27 | 16.09 | 13.79 | 13.42 | 12.57 | 5.09 | 5.17 | -0.66 | -0.81 | -0.90 | 0.14 | 1.71 | 5.00 | 9.03 | 8.54 | 8.87 | 8.95 | 15.49 | 20.85 | 29.27 | 47.78 | 18.91 | 13.90 | 12.99 | 12.29 |
| Total Shareholders' Equity | 2.89B | 2.73B | 2.82B | 2.85B | 2.71B | 3.02B | 2.51B | 2.17B | 1.93B | 2.14B | 766.34M | 620.88M | -69.61M | -82.68M | -88.97M | 13.87M | 159.29M | 455.84M | 998.95M | 850.15M | 753.63M | 735.37M | 1.15B | 1.33B | 1.53B | 2.13B | 809.84M | 530.5M | 474.9M | 363.6M |
| Common Stock | 1.42M | 1.41M | 1.43M | 1.45M | 1.48M | 1.55M | 1.55M | 1.54M | 1.54M | 1.43M | 1.4M | 1.36M | 1.07M | 1.04M | 1.01M | 974K | 941K | 920K | 905K | 868K | 849K | 5.8M | 5.72M | 4.73M | 4.33M | 3.28M | 2.87M | 1.4M | 0 | 0 |
| Retained Earnings | -2.8B | -3.17B | -3.29B | -3.38B | -3.63B | -3.79B | -4.28B | -4.64B | -4.95B | -4.66B | -5.93B | -6B | -6.01B | -5.97B | -5.88B | -5.74B | -5.54B | -5.21B | -4.63B | -4.67B | -4.75B | -4.75B | -4.32B | -3.53B | -3.14B | -1.54B | 250.65M | 169.3M | 179.5M | 117.5M |
| Treasury Stock | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Accumulated OCI | -40.08M | -55.03M | -46.71M | -37.77M | -46.65M | 439K | -35.36M | -22.08M | -5.78M | -11.02M | -24.33M | -22.13M | -14.67M | -7.77M | -3.35M | 31K | 1.06M | 1.22M | -1.27M | -1.24M | -1.08M | -7.45M | -16.57M | -7.67M | 4.97M | 1.61M | -933K | -200K | -41.1M | -11.5M |
| Minority Interest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Cyclical carrier spending volatility
According to recent financial statements, Ciena has expanded its total asset base to $6.0 billion as of 2026Q2, reflecting a steady upward trajectory from the $5.6 billion level observed in early 2024, which suggests the company is successfully scaling its infrastructure to meet rising demand.
The consistent growth in total assets appears to be driven by a combination of inventory accumulation and strategic investments in operational capacity. This expansion suggests that management is positioning the firm to capture larger project volumes, though investors should monitor whether this asset growth translates into proportional revenue efficiency.
Based on reported figures, Ciena maintains a stable debt-to-equity ratio of 0.54 as of 2026Q2, with total debt held constant at $1.6 billion over the last ten quarters, indicating a disciplined approach to capital structure that minimizes interest rate sensitivity in a volatile market.
The company's reliance on a fixed debt load suggests that management prioritizes balance sheet stability over aggressive financial engineering. This conservative leverage profile provides a necessary buffer against the inherent cyclicality of telecommunications capital expenditure cycles, allowing the firm to navigate downturns without immediate refinancing pressure.
As reported in quarterly filings, Ciena’s current ratio stands at 2.73 in 2026Q2, which, while down from the peak of 4.26 in 2024Q1, continues to provide a robust liquidity cushion relative to the company's operational requirements and short-term obligations.
The moderation in the current ratio appears to be a natural consequence of increased working capital deployment to support revenue growth rather than a sign of liquidity stress. This healthy buffer suggests the company remains well-equipped to manage the timing mismatches between project-based cash inflows and ongoing R&D expenditures.
Data from recent balance sheets reveals that Ciena’s retained earnings remain in a deficit position of $2.8 billion as of 2026Q2, a persistent trend that warrants investigation into the historical drivers of this capital structure and its long-term implications for shareholder value.
The ongoing deficit in retained earnings suggests that past capital allocation decisions or accounting adjustments continue to weigh on the equity base. While total equity has remained relatively stable near $2.9 billion, the reliance on external capital or non-retained sources for growth may limit the company's flexibility in returning capital to shareholders.
Quick answers to the most common questions about buying CIEN stock.
As of 2025, Ciena Corporation (CIEN) had total assets of $5.86B including $3.57B in current assets.
Ciena Corporation (CIEN) carries total debt of $1.58B, offset by $1.31B in cash and short-term investments. Comparing total debt to cash helps evaluate the company's debt burden and net leverage.
Ciena Corporation (CIEN) has total shareholders' equity (book value) of $2.73B ($18.79 book value per share). Book value represents the net worth of the company belonging to common stock holders.
Ciena Corporation (CIEN) reported a current ratio of 2.73x. A current ratio above 1.0x indicates that the company has more current assets than current liabilities, suggesting sufficient short-term liquidity.