The company's financial leverage is increasingly strained, evidenced by a D/E ratio of 4.15 and a total debt load of $2.0B as of 2026Q1.
| Metric | TTM | Dec'25 | Dec'24 | Dec'23 | Dec'22 | Dec'21 | Dec'20 | Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | Dec'08 | Dec'07 | Dec'06 | Dec'05 | Dec'04 | Dec'03 | Dec'02 | Dec'01 | Dec'00 | Dec'99 | Dec'98 | Dec'97 | Dec'96 |
|---|
| Total Current Assets | 2.94B | 2.99B | 2.62B | 2.64B | 2.2B | 2.35B | 2.13B | 2.72B | 2.21B | 1.17B | 797.93M | 837M | 836.6M | 735.51M | 423.44M | 360.14M | 483.14M | 596.13M | 518.38M | 207.32M | 206.2M | 105.86M | 125.61M | 239.56M | 320.18M | 328.82M | 133.2M | 59.2M | 63.2M | 89.2M | 79.4M |
| Cash & Short-Term Investments | 1.92B | 2.68B | 2.3B | 2.33B | 2B | 2.13B | 1.89B | 2.5B | 2.08B | 1.02B | 665.22M | 803.98M | 810.71M | 708.86M | 408.07M | 343.66M | 472.35M | 574.31M | 491M | 193.72M | 193.33M | 94.39M | 103.88M | 215.5M | 289.35M | 312.02M | 127.26M | 52.8M | 27.6M | 38.1M | 37.1M |
| Cash Only | 173.38M | 372.26M | 242.08M | 399.27M | 276.47M | 869.19M | 397.66M | 683.29M | 278.82M | 129.63M | 84.69M | 128.8M | 143M | 159.97M | 124.48M | 65.48M | 70.05M | 105.25M | 217.92M | 138.61M | 114.51M | 3.65M | 27.25M | 33.12M | 101.86M | 127.01M | 39.62M | 35.3M | 27.6M | 38.1M | 37.1M |
| Short-Term Investments | 1.75B | 2.31B | 2.06B | 1.93B | 1.72B | 1.26B | 1.49B | 1.82B | 1.81B | 893.09M | 2.41M | 24.79M | 81.88M | 52.1M | 33.62M | 278.19M | 402.3M | 469.06M | 273.08M | 55.1M | 78.82M | 90.74M | 76.63M | 182.39M | 187.5M | 185.01M | 87.65M | 17.5M | 0 | 0 | 0 |
| Accounts Receivable | 73.68M | 66M | 92.19M | 97.78M | 25.54M | 61.9M | 76.2M | 63.03M | 12.76M | 62.95M | 108.04M | 11.36M | 3.9M | 11.1M | 522K | 6.92M | 1.24M | 10.9M | 4.12M | 6.18M | 2.4M | 3.92M | 10.05M | 2.66M | 14.91M | 0 | 3.35M | 5.4M | 3.5M | 0 | 0 |
| Days Sales Outstanding | 18.74 | 25.52 | 47.72 | 45.31 | 15.87 | 27.88 | 38.14 | 20.49 | 7.77 | 44.69 | 105.79 | 14.61 | 6.65 | 27.51 | 1.87 | 25.49 | 4.18 | 32.71 | 14.03 | 38.64 | 58.83 | 35.63 | 86.04 | 19.4 | 67.86 | - | 32.78 | 58.14 | 32.59 | - | - |
| Inventory | 5.56M | 10.05M | 12.51M | 7.44M | 22.03M | 24.81M | 21.96M | 18.18M | 8.58M | 9.98M | 7.49M | 6.9M | 6.29M | 8.03M | 6.12M | 4.14M | 2.48M | 2.77M | 2.72M | 2.82M | 861K | 951K | 2.72M | 13.99M | 11.09M | 0 | 0 | 0 | 0 | 0 | 0 |
| Days Inventory Outstanding | 180.47 | 229.22 | 407.21 | 297.38 | 569.71 | 835.1 | 671.07 | 1.51K | 1.72K | - | - | 7.81 | 9.5 | 15.93 | 14.1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Other Current Assets | 938.59M | 247M | 217.93M | 205.43M | 157.72M | 125.17M | 140.16M | 139.84M | 102.47M | 73.08M | 17.18M | 14.77M | 15.69M | 7.52M | 8.73M | 5.42M | 7.06M | 8.15M | 20.55M | 4.6M | 9.61M | 6.6M | 8.96M | 7.41M | 4.83M | 6.44M | 2.6M | 1M | 32.1M | 51.1M | 42.3M |
| Total Non-Current Assets | 513.02M | 533.2M | 383.38M | 348.22M | 331.18M | 266.64M | 259.05M | 512.51M | 459.9M | 154.04M | 114.53M | 110.9M | 119.21M | 111.65M | 122.25M | 124.75M | 67.34M | 61.06M | 55.77M | 51.54M | 49.7M | 60.52M | 82.82M | 95.38M | 118.5M | 88.25M | 50.05M | 43.91M | 32.9M | 28.7M | 21.9M |
| Property, Plant & Equipment | 377.46M | 362M | 256.11M | 242.94M | 255.84M | 196.04M | 181.08M | 153.65M | 132.16M | 121.91M | 92.84M | 90.23M | 88.96M | 86.2M | 91.08M | 96.61M | 35.7M | 27.34M | 17.37M | 7.13M | 7.16M | 9.13M | 28.45M | 34.79M | 59.09M | 28.25M | 22.63M | 23.9M | 21.5M | 18.8M | 15.3M |
| Fixed Asset Turnover | 3.10x | 2.61x | 2.75x | 3.24x | 2.30x | 4.13x | 4.03x | 7.31x | 4.54x | 4.22x | 4.02x | 3.14x | 2.41x | 1.71x | 1.12x | 1.03x | 3.04x | 4.45x | 6.17x | 8.18x | 2.08x | 4.40x | 1.50x | 1.44x | 1.36x | 1.89x | 1.65x | 1.42x | 1.82x | 1.74x | 1.48x |
| Goodwill | 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 | 0 |
| Intangible Assets | 0 | 0 | 0 | 0 | 0 | 29M | 27.94M | 25.67M | 24.03M | 22M | 20.36M | 19.32M | 19.88M | 20.09M | 25.23M | 16.26M | 15.82M | 30.45M | 33.12M | 36.86M | 38.27M | 42.54M | 45.2M | 50.74M | 49.65M | 49.1M | 13.81M | 11.3M | 9.1M | 7.5M | 6.2M |
| Long-Term Investments | 127.23M | 52.21M | 41.02M | 42.99M | 40.37M | 32.32M | 15.06M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 870K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Current Assets | 135.56M | 119.39M | 86.25M | 62.29M | 34.97M | 9.27M | 34.97M | 27.63M | 12.91M | 10.13M | 1.32M | 1.35M | 13.07M | 5.36M | 5.94M | 2.85M | 14.95M | 17.81M | 5.27M | 7.55M | 4.28M | 8.84M | 9.16M | 9.85M | 9.76M | 10.9M | 13.61M | 8.71M | 2.3M | 2.4M | 400K |
| Total Assets | 3.45B | 3.52B | 3B | 2.99B | 2.53B | 2.61B | 2.39B | 3.23B | 2.67B | 1.32B | 912.47M | 947.9M | 955.81M | 847.16M | 545.69M | 484.89M | 550.48M | 657.18M | 574.15M | 258.86M | 255.91M | 166.37M | 208.43M | 334.94M | 438.68M | 417.06M | 183.26M | 103.11M | 96.1M | 117.9M | 101.3M |
| Asset Turnover | 0.33x | 0.27x | 0.23x | 0.26x | 0.23x | 0.31x | 0.31x | 0.35x | 0.22x | 0.39x | 0.41x | 0.30x | 0.22x | 0.17x | 0.19x | 0.20x | 0.20x | 0.19x | 0.19x | 0.23x | 0.06x | 0.24x | 0.20x | 0.15x | 0.18x | 0.13x | 0.20x | 0.33x | 0.41x | 0.28x | 0.22x |
| Asset Growth % | 49.33% | 17.32% | 0.45% | 18% | -2.98% | 9.29% | -26.09% | 21.19% | 101.68% | 44.97% | -3.74% | -0.83% | 12.83% | 55.25% | 12.54% | -11.91% | -16.24% | 14.46% | 121.8% | 1.15% | 53.82% | -20.18% | -37.77% | -23.65% | 5.18% | 127.58% | 77.73% | 7.29% | -18.49% | 16.39% | 1.71% |
| Total Current Liabilities | 716.59M | 781.57M | 309.32M | 448.09M | 311.56M | 240.55M | 598.9M | 273M | 280.29M | 243.61M | 133.78M | 148.88M | 115.33M | 97.81M | 74.32M | 76.11M | 105.89M | 111.44M | 124.7M | 62.2M | 25.14M | 23.79M | 43.42M | 45.56M | 75.95M | 48.25M | 14.64M | 15M | 22.5M | 26.6M | 23.1M |
| Accounts Payable | 26.03M | 28.08M | 42.96M | 26.03M | 17.92M | 11.9M | 17.2M | 16.07M | 28.66M | 24.89M | 21.12M | 28.36M | 17.98M | 11.01M | 10.24M | 8.3M | 6.52M | 4.7M | 5.71M | 4.51M | 4.29M | 2.1M | 6.97M | 3.72M | 5.52M | 6.13M | 2.23M | 3.1M | 3M | 2.8M | 2.4M |
| Days Payables Outstanding | 476.5 | 640.62 | 1.4K | 1.04K | 463.39 | 400.75 | 525.46 | 1.34K | 5.75K | - | - | 32.11 | 27.15 | 21.83 | 23.59 | - | - | - | - | - | - | - | - | - | - | - | -147.12 | -217.6 | -254.65 | -319.38 | -336.92 |
| Short-Term Debt | 432.5M | 453.15M | 9.28M | 53.16M | 7.54M | 3.53M | 308.81M | 2.03M | 13.75M | 1.62M | 1.19M | 9.03M | 2.88M | 4.41M | 4.88M | 3.39M | 5.64M | 4.27M | 2.06M | 7.24M | 7.51M | 7.83M | 10.55M | 16.48M | 21.43M | 9.84M | 4.61M | 3.9M | 3.6M | 2.3M | 6.2M |
| Deferred Revenue (Current) | 295.86M | 73.76M | 78.99M | 151.13M | 90.58M | 97.71M | 108.38M | 118.27M | 160.26M | 125.34M | 51.28M | 67.32M | 51.71M | 48.13M | 35.92M | 36.58M | 74.5M | 75.68M | 92.66M | 33.2M | 1.04M | 1.51M | 14.19M | 0 | 0 | 22.7M | 0 | 0 | 0 | 0 | 0 |
| Other Current Liabilities | 59.44M | 107.63M | 69.61M | 67.73M | 49.18M | 38.81M | 73.03M | 37.36M | 29.27M | 25.15M | 24.19M | 16.07M | 12.3M | 12.17M | 7.88M | 9.18M | 6.83M | 7.13M | 7.87M | 0 | 0 | 0 | 0 | 14.68M | 38.87M | 0 | 7.8M | 8M | 15.9M | 21.5M | 14.5M |
| Current Ratio | 4.10x | 3.83x | 8.47x | 5.90x | 7.07x | 9.75x | 3.56x | 9.97x | 7.88x | 4.80x | 5.96x | 5.62x | 7.25x | 7.52x | 5.70x | 4.73x | 4.56x | 5.35x | 4.16x | 3.33x | 8.20x | 4.45x | 2.89x | 5.26x | 4.22x | 6.82x | 9.10x | 3.95x | 2.81x | 3.35x | 3.44x |
| Quick Ratio | 4.09x | 3.81x | 8.43x | 5.88x | 7.00x | 9.65x | 3.52x | 9.90x | 7.85x | 4.76x | 5.91x | 5.58x | 7.20x | 7.44x | 5.61x | 4.68x | 4.54x | 5.32x | 4.14x | 3.29x | 8.17x | 4.41x | 2.83x | 4.95x | 4.07x | 6.82x | 9.10x | 3.95x | 2.81x | 3.35x | 3.44x |
| Cash Conversion Cycle | -277.29 | -385.88 | -943.36 | -697.48 | 122.19 | 462.23 | 183.75 | 196.42 | -4.02K | - | - | -9.69 | -11 | 21.61 | -7.62 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Total Non-Current Liabilities | 2.24B | 2.25B | 2.11B | 2.16B | 1.65B | 1.6B | 1.05B | 1.28B | 1.2B | 713.88M | 679.12M | 598.23M | 582.7M | 370.95M | 288.6M | 237.35M | 200.04M | 243.68M | 345.2M | 186.41M | 132.87M | 139.91M | 237.14M | 222.21M | 207.26M | 145.72M | 102.25M | 87.31M | 77.8M | 56.4M | 19.8M |
| Long-Term Debt | 1.35B | 1.9B | 1.25B | 1.23B | 1.18B | 1.23B | 600.12M | 769.96M | 628.06M | 592.88M | 500.51M | 389.37M | 375.5M | 150.33M | 143.99M | 141.45M | 148.76M | 136.58M | 172.44M | 162.86M | 125M | 139.91M | 236.61M | 213.4M | 207.26M | 125.71M | 102.25M | 87.3M | 77.7M | 56.5M | 19.9M |
| Capital Lease Obligations | 948.65M | 262.38M | 161.81M | 170.88M | 178.94M | 19.43M | 0 | 0 | 0 | 0 | 72.36M | 72.22M | 71.73M | 71.29M | 70.55M | 69.88M | 0 | 0 | 0 | 0 | 7.82M | 0 | 0 | 0 | 0 | 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 | 44K | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Current Liabilities | 557.76M | 0 | 542.21M | 513.74M | 0 | 0 | 23.41M | 15.54M | 4.91M | 12.97M | 15.05M | 2.34M | 7.67M | 6.54M | 7.4M | 8.55M | 870K | 0 | 172.77M | 23.55M | 0 | 0 | 531K | 8.81M | 0 | 20M | 0 | 7K | 100K | -100K | -100K |
| Total Liabilities | 2.96B | 3.03B | 2.42B | 2.6B | 1.96B | 1.84B | 1.65B | 1.55B | 1.48B | 957.49M | 812.9M | 747.11M | 698.03M | 468.77M | 362.92M | 313.46M | 305.94M | 355.12M | 469.9M | 248.62M | 158M | 163.71M | 280.56M | 267.76M | 283.21M | 193.96M | 116.89M | 102.31M | 100.3M | 83M | 42.9M |
| Total Debt | 2.04B | 2.61B | 1.42B | 1.45B | 1.37B | 1.25B | 908.93M | 771.98M | 641.81M | 594.5M | 574.05M | 470.62M | 450.11M | 226.03M | 219.42M | 214.72M | 154.41M | 140.85M | 174.5M | 170.1M | 140.34M | 147.75M | 247.16M | 229.87M | 228.69M | 135.55M | 106.86M | 91.2M | 81.3M | 58.8M | 26.1M |
| Net Debt | 1.87B | 2.24B | 1.17B | 1.05B | 1.09B | 381.86M | 511.26M | 88.7M | 362.99M | 464.87M | 489.37M | 341.82M | 307.12M | 66.06M | 94.94M | 149.24M | 84.36M | 35.59M | -43.41M | 31.49M | 25.82M | 144.1M | 219.91M | 196.76M | 126.83M | 8.54M | 67.25M | 55.9M | 53.7M | 20.7M | -11M |
| Debt / Equity | 4.15x | 5.35x | 2.41x | 3.76x | 2.39x | 1.62x | 1.22x | 0.46x | 0.54x | 1.63x | 5.77x | 2.34x | 1.75x | 0.60x | 1.20x | 1.25x | 0.63x | 0.47x | 1.67x | 16.61x | 1.43x | 55.44x | - | 3.42x | 1.47x | 0.61x | 1.61x | 114.00x | - | 1.68x | 0.45x |
| Debt / EBITDA | 0.46x | - | - | - | - | - | - | 2.02x | - | 15.09x | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Net Debt / EBITDA | 0.42x | - | - | - | - | - | - | 0.23x | - | 11.80x | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Interest Coverage | -3.64x | -4.21x | -4.15x | -3.17x | -30.76x | -2.65x | -13.50x | 7.20x | -0.70x | 0.63x | -0.48x | -1.39x | -1.45x | -2.44x | -2.53x | -4.07x | -3.62x | -1.51x | -0.48x | -4.35x | -7.28x | -2.47x | -3.78x | - | - | - | - | - | - | - | - |
| Total Equity | 491.41M | 489.09M | 588.35M | 386.69M | 572.89M | 771.74M | 743.28M | 1.68B | 1.19B | 365.28M | 99.56M | 200.79M | 257.78M | 378.39M | 182.77M | 171.43M | 244.54M | 302.06M | 104.25M | 10.24M | 97.9M | 2.67M | -72.13M | 67.18M | 155.48M | 223.1M | 66.37M | 800K | -4.2M | 34.9M | 58.4M |
| Equity Growth % | 119.27% | -16.87% | 52.15% | -32.5% | -25.77% | 3.83% | -55.88% | 41.9% | 225% | 266.88% | -50.41% | -22.11% | -31.87% | 107.04% | 6.61% | -29.9% | -19.04% | 189.76% | 917.75% | -89.54% | 3573.62% | 103.69% | -207.38% | -56.79% | -30.31% | 236.16% | 8195.75% | 119.05% | -112.03% | -40.24% | -23.06% |
| Book Value per Share | 2.98 | 3.06 | 3.94 | 2.70 | 4.04 | 5.47 | 5.32 | 11.79 | 8.86 | 2.90 | 0.82 | 1.68 | 2.19 | 3.42 | 1.82 | 1.72 | 2.47 | 3.08 | 1.10 | 0.12 | 1.32 | 0.04 | -1.27 | 1.21 | 2.85 | 5.06 | 1.79 | 0.03 | -0.16 | 1.31 | 2.29 |
| Total Shareholders' Equity | 491.41M | 489.09M | 588.35M | 386.69M | 572.89M | 771.74M | 743.28M | 1.47B | 1.05B | 281.01M | 99.56M | 200.79M | 257.78M | 378.39M | 182.77M | 171.43M | 244.54M | 291.72M | 67.09M | 872K | 68.56M | 2.67M | -72.13M | 67.18M | 155.48M | 223.1M | 66.37M | 800K | -4.2M | 34.9M | 58.4M |
| Common Stock | 166K | 163K | 158K | 144K | 142K | 141K | 140K | 140K | 138K | 125K | 122K | 120K | 118K | 116K | 102K | 100K | 99K | 99K | 97K | 87K | 82K | 72K | 57K | 56K | 55K | 54K | 40K | 0 | 0 | 0 | 0 |
| Retained Earnings | -2.72B | -2.63B | -2.25B | -1.8B | -1.43B | -1.16B | -1.13B | -707.53M | -967.29M | -1.19B | -1.18B | -1.09B | -1.01B | -967.61M | -906.97M | -841.49M | -756.69M | -696.15M | -839.71M | -827.75M | -816.75M | -770.85M | -698.45M | -555.58M | -459.89M | -386.59M | -311.46M | -256.8M | -197.1M | -154.1M | -123.1M |
| 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 | 0 |
| Accumulated OCI | -31.02M | -25.28M | -30.81M | -32.65M | -57.48M | -32.67M | -21.07M | -25.29M | -32.02M | -31.76M | -30.36M | -13.56M | 39.75M | 21.08M | 12.48M | -770K | 949K | 2.15M | 982K | 538K | 4.28M | 3.18M | 2.55M | 3.18M | -667K | 415K | -732K | -26.7M | -22.3M | -18.5M | -15.6M |
| Minority Interest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 213.45M | 139.08M | 84.27M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.34M | 37.16M | 9.37M | 29.34M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Liquidity and dilution risk
As reported in recent financial statements, Ionis's equity base has contracted significantly to $491.4M in 2026Q1 from $662.5M in 2024Q3, signaling a weakening financial position as the company aggressively funds its transition toward an independent, self-commercialized pharmaceutical business model.
The consistent decline in equity, coupled with persistent negative retained earnings, suggests that the company is consuming its capital base to finance R&D and commercial infrastructure. Investors should monitor whether this trajectory stabilizes as new product launches begin to contribute meaningful, recurring revenue to the balance sheet.
Based on the 2026Q1 balance sheet, Ionis carries $2.0B in total debt, resulting in a D/E ratio of 4.15, which indicates that the company is increasingly reliant on debt financing to sustain operations while its equity cushion remains thin.
This elevated leverage profile appears to be a necessity-driven strategy to bridge the funding gap during the high-cost commercialization phase. The high debt-to-equity ratio warrants further investigation into the company's ability to service these obligations if milestone payments or product sales underperform expectations.
According to recent SEC filings, Ionis's cash and equivalents have dwindled to $173.4M in 2026Q1, down from $399.3M in 2023Q4, highlighting a narrowing liquidity buffer that may force the company to seek dilutive capital raises if operating cash burn remains elevated.
While the current ratio of 4.10 appears healthy on the surface, the rapid depletion of cash reserves relative to the company's high operating burn rate suggests a precarious liquidity position. This trend implies that the company's financial stability is highly sensitive to the timing of future partnership milestones.
As indicated by the company's financial disclosures, deferred revenue has declined to $144.9M in 2026Q1 from a peak of $392.3M in 2023Q4, suggesting that the company is burning through its backlog of upfront partnership payments faster than it is replenishing them.
The reduction in deferred revenue may indicate a potential slowdown in new, large-scale licensing agreements, which have historically provided non-dilutive funding. This trend suggests that the company must now rely more heavily on direct product sales to sustain its operations, increasing the pressure on its new commercial launches.
Quick answers to the most common questions about buying IONS stock.
As of 2025, Ionis Pharmaceuticals, Inc. (IONS) had total assets of $3.52B including $2.99B in current assets.
Ionis Pharmaceuticals, Inc. (IONS) carries total debt of $2.61B, offset by $2.68B in cash and short-term investments. Comparing total debt to cash helps evaluate the company's debt burden and net leverage.
Ionis Pharmaceuticals, Inc. (IONS) has total shareholders' equity (book value) of $489.1M ($3.06 book value per share). Book value represents the net worth of the company belonging to common stock holders.
Ionis Pharmaceuticals, Inc. (IONS) reported a current ratio of 3.83x. A current ratio above 1.0x indicates that the company has more current assets than current liabilities, suggesting sufficient short-term liquidity.