Latest Ratios: P/E Ratio -36.3x · EV/EBITDA N/A · ROE -70.7%. (1996–2025 historical series)
Price-based multiples — how expensive the stock is relative to earnings, sales, book value, and cash flow
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Market Cap | $14.3B | $12.7B | $5.2B | $7.2B | $5.4B | $4.3B | $7.9B | $8.6B | $7.2B | $6.3B | $5.8B |
| Enterprise Value | $16.5B | $14.9B | $6.4B | $8.3B | $6.5B | $4.7B | $8.4B | $8.7B | $7.6B | $6.8B | $6.3B |
| P/E Ratio → | -36.27 | — | — | — | — | — | — | 29.33 | 26.50 | — | — |
| P/S Ratio | 15.11 | 13.41 | 7.41 | 9.20 | 9.12 | 5.29 | 10.82 | 7.69 | 12.09 | 12.34 | 15.52 |
| P/B Ratio | 28.24 | 25.88 | 8.88 | 18.73 | 9.35 | 5.56 | 10.62 | 5.12 | 6.10 | 17.36 | 58.09 |
| P/FCF | — | — | — | — | — | 332.71 | — | 27.89 | 12.38 | 46.54 | — |
| P/OCF | — | — | — | — | — | 139.33 | 219.93 | 24.96 | 12.02 | 36.42 | — |
P/E links to full P/E history page with 30-year chart
Enterprise-value multiples — capital-structure-neutral measures of total business value
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| EV / Revenue | — | 15.78 | 9.08 | 10.54 | 10.98 | 5.77 | 11.53 | 7.77 | 12.69 | 13.24 | 16.83 |
| EV / EBITDA | — | — | — | — | — | — | — | 22.83 | — | 172.80 | — |
| EV / EBIT | — | — | — | — | — | — | — | 24.83 | — | 243.22 | — |
| EV / FCF | — | — | — | — | — | 362.31 | — | 28.18 | 13.00 | 49.95 | — |
Margins and return-on-capital ratios measuring operating efficiency
Full margin charts and quarterly trend are on the Earnings History page
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gross Margin | 98.3% | 98.3% | 98.4% | 98.8% | 97.6% | 98.7% | 98.4% | 99.6% | 99.7% | 100.0% | 100.0% |
| Operating Margin | -40.5% | -40.5% | -67.4% | -44.9% | -69.8% | -3.7% | -23.6% | 32.6% | -10.2% | 6.0% | -5.4% |
| Net Profit Margin | -40.4% | -40.4% | -64.4% | -46.5% | -45.9% | -3.5% | -60.9% | 24.8% | 45.6% | 0.1% | -16.2% |
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ROE | -70.7% | -70.7% | -93.1% | -76.3% | -40.1% | -3.8% | -36.6% | 19.4% | 35.3% | 0.1% | -40.2% |
| ROA | -11.7% | -11.7% | -15.1% | -13.3% | -10.5% | -1.1% | -15.8% | 9.4% | 13.7% | 0.0% | -6.5% |
| ROIC | -12.8% | -12.8% | -22.2% | -17.1% | -21.8% | -1.9% | -8.5% | 16.5% | -3.9% | 3.3% | -2.7% |
| ROCE | -14.1% | -14.1% | -18.1% | -14.8% | -17.9% | -1.5% | -7.2% | 13.7% | -3.5% | 3.3% | -2.6% |
Solvency and debt-coverage ratios — lower is generally safer
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt / Equity | 5.35 | 5.35 | 2.41 | 3.76 | 2.39 | 1.62 | 1.22 | 0.46 | 0.54 | 1.63 | 5.77 |
| Debt / EBITDA | — | — | — | — | — | — | — | 2.02 | — | 15.09 | — |
| Net Debt / Equity | — | 4.58 | 2.00 | 2.73 | 1.91 | 0.49 | 0.69 | 0.05 | 0.31 | 1.27 | 4.92 |
| Net Debt / EBITDA | — | — | — | — | — | — | — | 0.23 | — | 11.80 | — |
| Debt / FCF | — | — | — | — | — | 29.61 | — | 0.29 | 0.62 | 3.41 | — |
| Interest Coverage | -4.21 | -4.21 | -4.15 | -3.17 | -30.76 | -2.65 | -13.50 | 7.20 | -0.70 | 0.63 | -0.48 |
Short-term solvency ratios and asset-utilisation metrics
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Current Ratio | 3.83 | 3.83 | 8.47 | 5.90 | 7.07 | 9.75 | 3.56 | 9.97 | 7.88 | 4.80 | 5.96 |
| Quick Ratio | 3.81 | 3.81 | 8.43 | 5.88 | 7.00 | 9.65 | 3.52 | 9.90 | 7.85 | 4.76 | 5.91 |
| Cash Ratio | 3.43 | 3.43 | 7.43 | 5.20 | 6.41 | 8.87 | 3.16 | 9.16 | 7.44 | 4.20 | 0.65 |
| Asset Turnover | — | 0.27 | 0.23 | 0.26 | 0.23 | 0.31 | 0.31 | 0.35 | 0.22 | 0.39 | 0.41 |
| Inventory Turnover | 1.59 | 1.59 | 0.90 | 1.23 | 0.64 | 0.44 | 0.54 | 0.24 | 0.21 | — | — |
| Days Sales Outstanding | — | 25.52 | 47.72 | 45.31 | 15.87 | 27.88 | 38.14 | 20.49 | 7.77 | 44.69 | 105.79 |
Earnings, FCF, buyback, and dividend yields — total returns to shareholders
Full dividend history and growth charts are on the Dividend History page
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend Yield | — | — | — | — | — | — | — | — | — | — | — |
| Payout Ratio | — | — | — | — | — | — | — | — | — | — | — |
| Metric | TTM | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 | FY 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Earnings Yield | — | — | — | — | — | — | — | 3.4% | 3.8% | — | — |
| FCF Yield | — | — | — | — | — | 0.3% | — | 3.6% | 8.1% | 2.1% | — |
| Buyback Yield | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 1.1% | 0.4% | 0.0% | 0.0% | 0.0% |
| Total Shareholder Yield | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 1.1% | 0.4% | 0.0% | 0.0% | 0.0% |
| Shares Outstanding | — | $160M | $150M | $143M | $142M | $141M | $140M | $143M | $134M | $126M | $121M |
Commercialization execution and dilution
Based on reported figures, Ionis trades at a P/S multiple of 14.21, which appears to reflect a significant platform premium compared to traditional biotech peers, yet this valuation may be increasingly disconnected from the company's current inability to generate consistent, non-milestone-dependent earnings growth.
The elevated P/S ratio suggests that investors are pricing in the long-term potential of the LICA technology platform rather than near-term commercial performance. However, given the negative TTM P/E and the transition to a high-cost commercial model, this valuation multiple warrants caution as it may be overestimating the speed at which the pipeline can achieve self-sustaining profitability.
As reported in financial statements, Ionis's ROIC has remained consistently negative, reaching -3.5% in 2026Q1, which indicates that the company is currently destroying shareholder value rather than compounding it through its intensive investment in late-stage clinical assets and commercial infrastructure.
The persistent negative ROIC highlights the structural challenge of funding a massive R&D pipeline without a dominant, high-margin commercial product to offset the burn. Investors should monitor whether the shift toward self-commercialization can eventually drive returns above the cost of capital, or if the current strategy will continue to erode the equity base.
According to recent quarterly data, the company's cash conversion cycle has fluctuated wildly, reaching -555 days in 2026Q1, a metric that is heavily distorted by the lumpy nature of milestone payments and does not reflect standard operational efficiency in inventory or receivables management.
The extreme volatility in the CCC suggests that traditional efficiency metrics are poor indicators of operational health for this business model. The reliance on milestone-driven cash inflows creates a misleading picture of working capital management, as the company's true efficiency is tied to clinical trial milestones rather than product sales velocity.
Based on the 2026Q1 balance sheet, Ionis carries a D/E ratio of 4.15, which indicates that the company is increasingly reliant on debt financing to sustain its operations while its equity cushion remains thin compared to historical levels.
The high leverage ratio, combined with negative interest coverage, suggests that the company's ability to service its debt is becoming increasingly precarious. This financial structure leaves little room for error, potentially forcing management to pursue dilutive equity raises if commercial product launches fail to provide the necessary cash flow to deleverage.
The Price-to-Sales ratio is frequently misapplied to Ionis, as it obscures the underlying quality of revenue by failing to distinguish between high-margin, non-recurring milestone payments and lower-margin, recurring commercial product sales.
Investors should instead focus on the 'quality of revenue' by adjusting for non-recurring collaboration payments to determine the underlying growth of the royalty and product sales base. Relying on a headline P/S multiple risks overvaluing the company during periods of heavy milestone recognition while ignoring the structural margin compression inherent in the transition to a commercial-stage entity.
Includes 30+ ratios · 30 years · Updated daily
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Quick answers to the most common questions about buying IONS stock.
Ionis Pharmaceuticals, Inc.'s current P/E ratio is -36.3x. The historical average is 21.0x.
Ionis Pharmaceuticals, Inc.'s return on equity (ROE) is -70.7%. The historical average is -46.9%.
Based on historical data, Ionis Pharmaceuticals, Inc. is trading at a P/E of -36.3x. Compare with industry peers and growth rates for a complete picture.
Ionis Pharmaceuticals, Inc. has 98.3% gross margin and -40.5% operating margin.