Buy call

PRTA

Prothena Corporation plc

Published May 29, 2026 · graded over ~2 months

What this call did

May 29, 2026 to Jul 28, 2026

This call returned

-13.8%

S&P 500, same dates

-1.7%

Difference

-12.1%

May 29, 2026 to Jul 28, 2026 · n=1 of 99 · vs S&P 500 · saved before results. Past performance does not predict future results. Market research, not investment advice.

99 insider-buy calls (one per stock) published May 11, 2026 to Jul 17, 2026, each measured from the first market open after it was published, against the S&P 500 over its own 60 days: average +8.2% vs S&P +0.9%. Best +64.8%, worst -47.6%, 22 of 99 lost money. As of Sep 27, 2026.

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