Prothena Corporation plc (PRTA) — Net Asset Quality Index
Prothena Corporation plc (PRTA) has a Net Asset Quality Index of 83.7% as of September 2025. This metric measures the proportion of total assets financed by shareholders' equity — total assets of $352.63 Million minus total liabilities of $57.64 Million yields net assets of $294.99 Million. A higher index indicates a stronger, lower-leverage balance sheet. See how many days can Prothena Corporation plc fund operations to measure how many days the company can operate on defensive assets alone.
Quality Index
Net Assets
Total Assets
Total Liabilities
Prothena Corporation plc Net Asset Quality Index Over Time (2010–2024)
This chart shows how Prothena Corporation plc's Net Asset Quality Index has evolved across 15 annual periods from 2010 to 2024. As of September 2025, the index stands at 83.7%, representing net assets of $294.99 Million against total assets of $352.63 Million USD. Explore Prothena Corporation plc operating cash flow efficiency to assess how effectively this company generates cash.
Annual Net Asset Quality Index for Prothena Corporation plc (2010–2024)
The table below presents the year-by-year Net Asset Quality Index for Prothena Corporation plc from 2010 to 2024, covering 15 annual filings. Each row shows total assets, total liabilities, net assets, the quality index percentage, and the change in percentage points compared to the prior year. For market capitalisation and the full company profile, see PRTA market cap.
| Year | Quality Index | Net Assets (USD) | Total Assets | Total Liabilities | Change (pp) |
|---|---|---|---|---|---|
| 2024 | 89.0% | $486.93 Million | $547.11 Million | $60.18 Million | ▲ +8.4 pp |
| 2023 | 80.6% | $561.37 Million | $696.38 Million | $135.02 Million | ▼ -1.4 pp |
| 2022 | 82.1% | $622.04 Million | $758.03 Million | $135.99 Million | ▲ +5.6 pp |
| 2021 | 76.5% | $466.04 Million | $609.37 Million | $143.32 Million | ▲ +21.2 pp |
| 2020 | 55.3% | $184.01 Million | $332.98 Million | $148.97 Million | ▼ -9.8 pp |
| 2019 | 65.1% | $272.92 Million | $419.27 Million | $146.35 Million | ▲ +0.3 pp |
| 2018 | 64.8% | $323.00 Million | $498.80 Million | $175.80 Million | ▼ -17.3 pp |
| 2017 | 82.0% | $407.19 Million | $496.33 Million | $89.14 Million | ▲ +2.6 pp |
| 2016 | 79.4% | $365.40 Million | $459.98 Million | $94.57 Million | ▼ -14.2 pp |
| 2015 | 93.6% | $360.67 Million | $385.24 Million | $24.57 Million | ▼ -1.7 pp |
| 2014 | 95.3% | $289.89 Million | $304.12 Million | $14.23 Million | ▲ +0.3 pp |
| 2013 | 95.0% | $173.27 Million | $182.41 Million | $9.14 Million | ▼ -2.8 pp |
| 2012 | 97.8% | $126.48 Million | $129.28 Million | $2.80 Million | ▲ +275.7 pp |
| 2011 | -177.9% | $-6.44 Million | $3.62 Million | $10.05 Million | ▼ -180.9 pp |
| 2010 | 3.0% | $100.00K | $3.30 Million | $3.20 Million | — |