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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

Market Open

Feb 25, 2026 1:34:36 PM EST

4.91USD+16.627%(+0.70)50,720

4.91Bid 4.99Ask 0.08Spread

Pre-market

Feb 25, 2026 8:48:30 AM EST

4.07USD-3.325%(-0.14)183

After-hours

Feb 24, 2026 4:27:30 PM EST

4.21USD+0.358%(+0.02)0

OverviewHistoricalExchange VolumeShortsMore

ATRA Volume Feb 25, 2026 1:45:01 PM EST

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	41.76	174,718	54.36
NYSE Arca	18.13	75,838	8.10
Nasdaq GSM	15.26	63,853	20.53
MEMX	9.35	39,135	2.67
Cboe EDGX	4.83	20,202	7.00
Cboe BZX	2.93	12,262	2.07
MIAX Pearl	2.22	9,268	0.95
IEX	1.85	7,738	1.90
Cboe BYX	1.15	4,821	0.57
NYSE	1.04	4,368	0.65
Nasdaq BX	0.57	2,368	0.46
Cboe EDGA	0.47	1,951	0.26
NYSE National	0.24	1,001	0.14
Nasdaq PHLX	0.16	690	0.20
NYSE American	0.05	200	0.12
CHX	0.00	0	0.03

chartexchange.com

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

ATRA Nutrition Facts

0.90 servings per container

Serving size

467.21K

Calories

418.41K

% Day

% Avg

Off Exchange¹ 175K

41.76%

54.36%

NYSE Arca 76K

18.13%

8.10%

Nasdaq GSM 64K

15.26%

20.53%

MEMX 39K

9.35%

2.67%

Cboe EDGX 20K

4.83%

7.00%

Cboe BZX 12K

2.93%

2.07%

MIAX Pearl 9K

2.22%

0.95%

IEX 8K

1.85%

1.90%

Cboe BYX 5K

1.15%

0.57%

NYSE 4K

1.04%

0.65%

Nasdaq BX 2K

0.57%

0.46%

Cboe EDGA 2K

0.47%

0.26%

NYSE National 1K

0.24%

0.14%

Nasdaq PHLX 690

0.16%

0.20%

NYSE American 200

0.05%

0.12%

CHX 0

0.00%

0.03%

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 174,718, which is 41.76% of today's total volume.
Today's Lit volume is 243,695, which is 58.24%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 54.36%.
The average Lit volume has been 45.64%.

ATRA Volume by Exchange

Off Exchange

NYSE Arca

Nasdaq GSM

MEMX

Cboe EDGX

Cboe BZX

MIAX Pearl

IEX

Cboe BYX

NYSE

Nasdaq BX