Prothena Corp Public (PRTA) Assets (2012 - 2026)
Prothena Corp Public (PRTA) recorded Assets of $302.58 million in Q2 2026, down 24.2% from $399.07 million a year earlier and down 13.5% from the prior quarter.
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Analysis
Prothena Corp Public (PRTA) Assets (2012 - 2026) Analysis & Trends
At the end of FY2025, Prothena Corp Public reported Assets of $326.8 million, down 40.3% from FY2024.
- Annual Assets has declined for three straight years, with a five-year compound annual growth rate of -0.4% (FY2020 to FY2025).
- Across earlier years, Assets came in at $547.11 million in FY2024 (-21.4%), $696.38 million in FY2023 (-8.1%), $758.04 million in FY2022 (+24.4%) and $609.37 million in FY2021 (+83.0%).
- The Q2 2026 figure is the lowest quarterly Assets since Q1 2015.
- On a year-over-year basis, Assets has declined for 11 consecutive quarters, with an average decline of 29.4% over the last eight quarters.
- Peak year-over-year performance for Assets in the last five years was growth of 83.0% in Q4 2021, against a decline of 40.8% in Q3 2025 at the low end.
- Per Business Quant, the preceding three quarters came in at $349.89 million (Q1 2026), $326.8 million (Q4 2025) and $352.63 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Assets (Qtr) |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | 655.56 Bn | 574.09 Bn | 17.26 Bn | 201.06 Bn |
| 2 | AbbVie | 470.94 Bn | 444.10 Bn | 12.70 Bn | 135.12 Bn |
| 3 | Merck | 367.14 Bn | 321.57 Bn | 12.21 Bn | 129.80 Bn |
| 4 | Novartis Ag | 280.33 Bn | 236.20 Bn | 11.24 Bn | 122.03 Bn |
| 5 | Astrazeneca | 257.78 Bn | 231.34 Bn | 12.86 Bn | 115.83 Bn |
| 6 | Amgen | 226.04 Bn | 181.44 Bn | 7.24 Bn | 95.64 Bn |
| 7 | Gilead Sciences | 188.89 Bn | 163.01 Bn | 6.22 Bn | 49.36 Bn |
| 8 | Pfizer | 163.75 Bn | 110.70 Bn | 10.94 Bn | 201.13 Bn |
| 9 | Vertex Pharmaceuticals | 133.68 Bn | 105.69 Bn | 2.84 Bn | 27.42 Bn |
| 10 | Prothena Corp Public | 451.21 Mn | -804.86 Mn | - | 302.58 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 302.58 Mn |
| Mar 31, 2026 | 349.89 Mn |
| Dec 31, 2025 | 326.80 Mn |
| Sep 30, 2025 | 352.63 Mn |
| Jun 30, 2025 | 399.07 Mn |
| Mar 31, 2025 | 495.34 Mn |
| Dec 31, 2024 | 547.11 Mn |
| Sep 30, 2024 | 595.25 Mn |
| Jun 30, 2024 | 645.57 Mn |
| Mar 31, 2024 | 623.19 Mn |
| Dec 31, 2023 | 696.38 Mn |
| Sep 30, 2023 | 746.92 Mn |
| Jun 30, 2023 | 720.65 Mn |
| Mar 31, 2023 | 741.59 Mn |
| Dec 31, 2022 | 758.04 Mn |
| Sep 30, 2022 | 554.44 Mn |
| Jun 30, 2022 | 549.59 Mn |
| Mar 31, 2022 | 581.41 Mn |
| Dec 31, 2021 | 609.37 Mn |
| Sep 30, 2021 | 632.70 Mn |
API Access
Prothena Corp Public Assets API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=assets&ticker=PRTA&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "assets", "ticker": "PRTA", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=assets&ticker=PRTA&period=max&api_key=YOUR_API_KEY");
const data = await res.json();