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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

At Close

Sep 4, 2026 3:58:55 PM EDT

9.77USD+2.518%(+0.24)135,656

0.00Bid 0.00Ask 0.00Spread

Pre-market

Sep 2, 2026 8:27:30 AM EDT

9.50USD-0.315%(-0.03)0

After-hours

Sep 4, 2026 4:00:30 PM EDT

9.76USD-0.102%(-0.01)1,300

OverviewHistoricalExchange VolumeShortsMore

ATRA Volume Dec 31, 1969

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	82.29	111,615	39.24
Nasdaq GSM	7.04	9,552	31.22
NYSE Arca	3.14	4,263	8.57
NYSE National	2.03	2,757	0.70
NYSE	2.03	2,755	0.75
Cboe BZX	2.01	2,731	2.74
Cboe EDGX	0.61	834	4.04
Cboe BYX	0.25	344	2.34
Nasdaq BX	0.22	301	3.10
MEMX	0.12	166	1.82
IEX	0.10	132	1.64
Nasdaq PHLX	0.09	127	0.16
LTSE	0.03	45	0.01
MIAX Pearl	0.01	18	3.42
Cboe EDGA	0.00	1	0.18
NYSE American	0.00	1	0.03
CHX	0.00	0	0.04
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

2.67 servings per container

Serving size

50.75K

Calories

135.64K

% Day

% Avg

Off Exchange¹ 112K

82.29%

39.24%

Nasdaq GSM 10K

7.04%

31.22%

NYSE Arca 4K

3.14%

8.57%

NYSE National 3K

2.03%

0.70%

NYSE 3K

2.03%

0.75%

Cboe BZX 3K

2.01%

2.74%

Cboe EDGX 834

0.61%

4.04%

Cboe BYX 344

0.25%

2.34%

Nasdaq BX 301

0.22%

3.10%

MEMX 166

0.12%

1.82%

IEX 132

0.10%

1.64%

Nasdaq PHLX 127

0.09%

0.16%

LTSE 45

0.03%

0.01%

MIAX Pearl 18

0.01%

3.42%

Cboe EDGA 1

0.00%

0.18%

NYSE American 1

0.00%

0.03%

CHX 0

0.00%

0.04%

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 111,615, which is 82.29% of today's total volume.
Today's Lit volume is 24,027, which is 17.71%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 39.24%.
The average Lit volume has been 60.76%.

ATRA Volume by Exchange

Off Exchange

Nasdaq GSM

NYSE Arca

NYSE National

NYSE

Cboe BZX

Cboe EDGX

Cboe BYX

Nasdaq BX

MEMX

IEX