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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

At Close

Sep 24, 2026 3:59:07 PM EDT

8.57USD+0.175%(+0.01)20,456

8.31Bid 10.01Ask 1.70Spread

Pre-market

Sep 23, 2026 8:41:30 AM EDT

9.00USD+5.140%(+0.44)0

After-hours

0.00USD0.000%(0.00)0

OverviewHistoricalExchange VolumeShortsMore

ATRA Volume Sep 24, 2026

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Exchange	Day%	Volume	30D%
Nasdaq GSM	28.82	5,986	31.34
Off Exchange¹	18.19	3,778	37.39
NYSE Arca	16.74	3,478	8.12
Cboe BYX	13.16	2,733	2.32
Cboe EDGX	10.43	2,167	6.50
NYSE National	4.59	954	1.05
Cboe BZX	3.88	806	2.32
Nasdaq BX	2.72	565	4.00
NYSE	1.03	214	0.88
IEX	0.36	74	2.00
NYSE American	0.05	10	0.04
MEMX	0.03	6	0.93
MIAX Pearl	0.00	0	2.63
Cboe EDGA	0.00	0	0.21
Nasdaq PHLX	0.00	0	0.14
LTSE	0.00	0	0.08
CHX	0.00	0	0.01
24X National	0.00	0	0.01
Texas Stock Exchange LLC	0.00	0	0.00

chartexchange.com

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

ATRA Nutrition Facts

0.40 servings per container

Serving size

51.84K

Calories

20.77K

% Day

% Avg

Nasdaq GSM 6K

28.82%

31.34%

Off Exchange¹ 4K

18.19%

37.39%

NYSE Arca 3K

16.74%

8.12%

Cboe BYX 3K

13.16%

2.32%

Cboe EDGX 2K

10.43%

6.50%

NYSE National 954

4.59%

1.05%

Cboe BZX 806

3.88%

2.32%

Nasdaq BX 565

2.72%

4.00%

NYSE 214

1.03%

0.88%

IEX 74

0.36%

2.00%

NYSE American 10

0.05%

0.04%

MEMX 6

0.03%

0.93%

MIAX Pearl 0

0.00%

2.63%

Cboe EDGA 0

0.00%

0.21%

Nasdaq PHLX 0

0.00%

0.14%

LTSE 0

0.00%

0.08%

CHX 0

0.00%

0.01%

24X National 0

0.00%

0.01%

Texas Stock Exchange LLC 0

0.00%

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

chartexchange.com

ATRA Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 3,778, which is 18.19% of today's total volume.
Today's Lit volume is 16,993, which is 81.81%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 37.39%.
The average Lit volume has been 62.61%.

ATRA Volume by Exchange

Nasdaq GSM

Off Exchange

NYSE Arca

Cboe BYX

Cboe EDGX

NYSE National

Cboe BZX

Nasdaq BX

NYSE

IEX

NYSE American