# Prothena Corporation plc (PRTA): MoatMap facts

As of 14 Oct 2026. Research data, not investment advice.

As of 14 Oct 2026, MoatMap's StockRank for Prothena Corporation plc (PRTA) is 15/100, ranked against 24,000+ stocks in 35 markets (Quality 27, Value 32, Momentum 34, each scored against its sector).

- StockRank: 15/100, a percentile across 24,000+ stocks in 35 markets (100 is best).
- Quality 27, Value 32, Momentum 34: each a 0-100 percentile within the stock's sector.
- Position: #22,897 overall, #2,091 in Healthcare.
- Listing: United States, NMS; Healthcare / Biotechnology.
- Last close: 8.43 USD on 12 Oct 2026.
- Insider filings, last 180 days: directors sold USD 136K; 5%+ holders bought USD 9.9M.
- Buybacks, last 180 days: the company bought back USD 22.5M on 1 day.

Source: https://moatmap.ai/stock/PRTA
How the scores work: https://moatmap.ai/methodology
Does StockRank work? The public record: https://moatmap.ai/decile-tracker