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PRTA
Prothena Corporation plc
stock NASDAQ

At Close

Sep 29, 2026 3:59:58 PM EDT

8.78USD+0.745%(+0.06)543,121

8.77Bid 8.79Ask 0.02Spread

Pre-market

Sep 24, 2026 9:29:59 AM EDT

8.73USD+0.115%(+0.01)0

After-hours

0.00USD0.000%(0.00)0

OverviewOptionsHistoricalExchange VolumeShortsMore

PRTA Volume Sep 29, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	51.34	278,695	32.91
Nasdaq GSM	25.43	138,057	46.70
NYSE Arca	5.52	29,980	5.83
Cboe EDGX	4.60	24,960	2.17
IEX	3.81	20,709	5.19
Cboe BZX	3.13	16,972	3.36
NYSE	2.23	12,108	1.45
MEMX	1.70	9,204	0.81
Cboe BYX	0.55	3,008	0.42
Cboe EDGA	0.51	2,780	0.32
MIAX Pearl	0.30	1,605	0.09
NYSE American	0.23	1,224	0.10
Nasdaq BX	0.21	1,153	0.14
Texas Stock Exchange LLC	0.16	852	0.16
CHX	0.15	820	0.10
Nasdaq PHLX	0.11	607	0.15
24X National	0.02	101	0.01
NYSE National	0.00	0	0.10

chartexchange.com

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

PRTA Nutrition Facts

1.33 servings per container

Serving size

408.23K

Calories

542.84K

% Day

% Avg

Off Exchange¹ 279K

51.34%

32.91%

Nasdaq GSM 138K

25.43%

46.70%

NYSE Arca 30K

5.52%

5.83%

Cboe EDGX 25K

4.60%

2.17%

IEX 21K

3.81%

5.19%

Cboe BZX 17K

3.13%

3.36%

NYSE 12K

2.23%

1.45%

MEMX 9K

1.70%

0.81%

Cboe BYX 3K

0.55%

0.42%

Cboe EDGA 3K

0.51%

0.32%

MIAX Pearl 2K

0.30%

0.09%

NYSE American 1K

0.23%

0.10%

Nasdaq BX 1K

0.21%

0.14%

Texas Stock Exchange LLC 852

0.16%

CHX 820

0.15%

0.10%

Nasdaq PHLX 607

0.11%

0.15%

24X National 101

0.02%

0.01%

NYSE National 0

0.00%

0.10%

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

chartexchange.com

PRTA Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 278,695, which is 51.34% of today's total volume.
Today's Lit volume is 264,140, which is 48.66%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 32.91%.
The average Lit volume has been 67.09%.

PRTA Volume by Exchange

Off Exchange

Nasdaq GSM

NYSE Arca

Cboe EDGX

IEX

Cboe BZX

NYSE

MEMX

Cboe BYX

Cboe EDGA

MIAX Pearl