Prothena (PRTA) Fails to deliver data

Key failure to deliver metrics for Prothena:

• Last SEC data release: 2025-11-14
• Last 15 days FTD volume: £0.04 M
• Last 3 months FTD volume: £1.11 M
• Last 12 months FTD volume: £7.18 M

A Failure to deliver also known as fails-to-deliver or FTD occurs when a buyer or seller is unable to meet his trading obligations. FTDs for US listed companies are reported to the SEC and published twice a month. Therefore there is a certain delay between the reporting and the publishing of the data.

Failures to deliver for Prothena (PRTA) - 3 months history

Number of shares, 3 months chart

Biweekly Failures to deliver volume for Prothena (PRTA) - since 2013

Prothena (PRTA) Failure to deliver volume, Year over Year

FTD volume in the last 3 months for similar companies or competitors

Company	FTD volume (3 months)	FTD volume (1 year)	Country
Alkermes ALKS	£39.69 M	£46.08 M	🇮🇪 Ireland
Alnylam Pharmaceuticals ALNY	£13.72 M	£39.91 M	🇺🇸 USA
Amarin Corporation AMRN	£0.3 M	£1.45 M	🇮🇪 Ireland