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PRTA
Prothena Corporation plc
stockNASDAQ

At CloseNov 13, 2026 3:59:59 PM EST
8.17USD-0.729%(-0.06)340,447
After-hoursNov 13, 2026 4:15:30 PM EST
8.17USD0.000%(-0.00)

PRTA Fails-to-Deliver (FTD) · Latest

On 2026-10-14 there were 0 FTDs. The average number of FTDs per day for October 2026 is 0.

PRTA Fails-to-Deliver (FTDs)

PRTA Fails-to-Deliver

Page 1 / 9
Trade
Date (T)1		Fails-to-
Deliver2		FTD
Change		Trade
Vol.		Settlement
Date (T+B)4		Closing
Deadline
(T+35C)5		Price3$
Notional
2026-10-13—0573.3K2026-10-142026-11-178.360
2026-10-12—0489.8K2026-10-132026-11-168.430
2026-10-09—0931.6K2026-10-122026-11-138.840
2026-10-08—0642.4K2026-10-092026-11-128.610
2026-10-07—0690.4K2026-10-082026-11-118.480
2026-10-06—0510.6K2026-10-072026-11-108.020
2026-10-05—0714.5K2026-10-062026-11-098.270
2026-10-02—0675.8K2026-10-052026-11-068.360
2026-10-01—0457.1K2026-10-022026-11-058.540
2026-09-30—0634.8K2026-10-012026-11-048.380
2026-09-29—-318603.0K2026-09-302026-11-038.780
2026-09-28318+318488.9K2026-09-292026-11-028.722,773
2026-09-25—0481.0K2026-09-282026-10-308.290
2026-09-24—-3,531426.1K2026-09-252026-10-298.320
2026-09-233,531+3,531357.8K2026-09-242026-10-288.6830,649
2026-09-22—0445.5K2026-09-232026-10-278.990
2026-09-21—-5,860363.2K2026-09-222026-10-268.510
2026-09-185,860+5,8601.8M2026-09-212026-10-238.5850,279
2026-09-17—0404.8K2026-09-182026-10-228.460
2026-09-16—0398.3K2026-09-172026-10-218.240
2026-09-15—0323.4K2026-09-162026-10-208.330
2026-09-14—0374.9K2026-09-152026-10-198.860
2026-09-11—-535376.3K2026-09-142026-10-168.930
2026-09-10535+535310.9K2026-09-112026-10-159.024,826
2026-09-09—-349294.6K2026-09-102026-10-149.300
Historical data is split-adjusted.
1 Trade Date is calculated from the Settlement Date.
2 Fails to deliver on a given day are a CUMULATIVE number of all fails outstanding until that day, plus new fails that occur that day, less fails that settle that day. A dash (—) indicates no FTDs were reported that day. It’s been shown that the SEC withholds the FTD report for two weeks, and there are often high-volume days with no reported FTDs, so it’s unclear if missing days truly indicate 0 FTDs.
3 Closing price on the Trade Date. The FTD file contains the closing price on the day previous to settlement.
4 As of May 28, 2024, the standard for settlement is next business day after a trade (T+1B). Before that, it was trade date plus two business days (T+2B).
5 RegSHO IV. 3. A broker-dealer has up to 35 calendar days following the trade date to close out the failure to deliver position by purchasing securities of like kind and quantity. Analysis of the T+35 cycle.
FTD Release HistoryWe track the SEC's FTD publication schedule and flag when releases are late.Check it out