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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

At Close

Sep 16, 2025 3:59:30 PM EDT

11.59USD-2.931%(-0.35)19,539

11.75Bid 11.81Ask 0.06Spread

Pre-market

Sep 15, 2025 8:59:30 AM EDT

12.49USD+4.606%(+0.55)0

After-hours

0.00USD0.000%(0.00)0

OverviewHistoricalExchange VolumeShortsMore

ATRA Volume Sep 16, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	48.87	9,559	51.04
Nasdaq GSM	27.71	5,421	22.11
Cboe EDGX	13.88	2,715	7.85
Cboe BZX	3.33	651	2.03
MEMX	2.35	460	3.24
NYSE Arca	1.85	361	6.45
NYSE National	0.70	137	1.77
Cboe BYX	0.67	132	0.19
IEX	0.49	95	2.55
LTSE	0.10	20	0.02
NYSE	0.05	10	0.60
MIAX Pearl	0.01	1	0.90
Nasdaq BX	0.00	0	0.67
Nasdaq PHLX	0.00	0	0.23
Cboe EDGA	0.00	0	0.19
CHX	0.00	0	0.09
NYSE American	0.00	0	0.06

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

49.30K

Calories

19.56K

% Day

% Avg

Off Exchange¹ 10K

48.87%

51.04%

Nasdaq GSM 5K

27.71%

22.11%

Cboe EDGX 3K

13.88%

7.85%

Cboe BZX 651

3.33%

2.03%

MEMX 460

2.35%

3.24%

NYSE Arca 361

1.85%

6.45%

NYSE National 137

0.70%

1.77%

Cboe BYX 132

0.67%

0.19%

IEX 95

0.49%

2.55%

LTSE 20

0.10%

0.02%

NYSE 10

0.05%

0.60%

MIAX Pearl 1

0.01%

0.90%

Nasdaq BX 0

0.00%

0.67%

Nasdaq PHLX 0

0.00%

0.23%

Cboe EDGA 0

0.00%

0.19%

CHX 0

0.00%

0.09%

NYSE American 0

0.00%

0.06%

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 9,559, which is 48.87% of today's total volume.
Today's Lit volume is 10,003, which is 51.13%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 51.04%.
The average Lit volume has been 48.96%.

ATRA Volume by Exchange

Off Exchange

Nasdaq GSM

Cboe EDGX

Cboe BZX

MEMX

NYSE Arca

NYSE National

Cboe BYX

IEX

LTSE

NYSE