Prothena plc Profit Margin

The latest profit margin for PRTA is -80.67% as of June 2026. That compares with -2929.3% in the prior-year period — up 97.2% year over year. That is below the Healthcare sector average of 14.41%. Investors often review this figure alongside Prothena plc's historical trend and sector peers before judging valuation or financial health.

Over the past year, PRTA's profit margin moved from -2929.3% to -80.67% — a 97.2% year-over-year increase. If the trend continues in the same direction for several quarters, it can signal a meaningful shift in Prothena plc's valuation or profitability profile.

Against Healthcare companies, PRTA currently prints -80.67% for profit margin, while the sector average sits near 14.41%. That is roughly 659.7% below the sector mean. Large gaps often invite a closer look at Prothena plc's growth, margins, and balance sheet.

Profit Margin shows how effectively Prothena plc converts resources into returns. At -80.67%, PRTA may look efficient or underperforming depending on peer benchmarks and trend direction. That compares with -2929.3% in the prior-year period — up 97.2% year over year. Pair the percentage with revenue growth and leverage for a fuller health check.

After noting PRTA's profit margin (-80.67%), review year-over-year change from -2929.3%, peer averages, and a few neighboring metrics such as revenue, margins, or valuation multiples. That combination usually beats staring at a single figure. The navigation links on this page jump you to those related views.