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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

At Close

Jul 20, 2026 3:59:04 PM EDT

8.32USD-0.834%(-0.07)59,211

7.18Bid 9.56Ask 2.38Spread

Pre-market

Jul 20, 2026 8:43:30 AM EDT

8.48USD+1.073%(+0.09)2,350

After-hours

Jul 17, 2026 4:00:30 PM EDT

8.39USD-1.003%(-0.09)0

OverviewHistoricalDark Pool LevelsShortsMore

ATRA Volume Jul 20, 2026

[NF]

Exchange	Day%	Volume	30D%
Nasdaq GSM	39.09	21,300	33.45
Off Exchange¹	32.15	17,517	38.74
Cboe BZX	10.79	5,878	3.62
NYSE Arca	8.83	4,813	8.87
Cboe EDGX	2.80	1,525	4.73
IEX	2.46	1,340	2.95
Cboe BYX	1.85	1,008	2.15
Nasdaq BX	1.25	682	0.94
MEMX	0.32	174	2.16
NYSE	0.25	136	1.26
MIAX Pearl	0.19	102	0.40
NYSE National	0.03	17	0.22
Cboe EDGA	0.00	1	0.30
Nasdaq PHLX	0.00	0	0.11
LTSE	0.00	0	0.07
NYSE American	0.00	0	0.03
CHX	0.00	0	0.01

chartexchange.com

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

ATRA Nutrition Facts

0.63 servings per container

Serving size

86.50K

Calories

54.49K

% Day

% Avg

Nasdaq GSM 21K

39.09%

33.45%

Off Exchange¹ 18K

32.15%

38.74%

Cboe BZX 6K

10.79%

3.62%

NYSE Arca 5K

8.83%

8.87%

Cboe EDGX 2K

2.80%

4.73%

IEX 1K

2.46%

2.95%

Cboe BYX 1K

1.85%

2.15%

Nasdaq BX 682

1.25%

0.94%

MEMX 174

0.32%

2.16%

NYSE 136

0.25%

1.26%

MIAX Pearl 102

0.19%

0.40%

NYSE National 17

0.03%

0.22%

Cboe EDGA 1

0.00%

0.30%

Nasdaq PHLX 0

0.00%

0.11%

LTSE 0

0.00%

0.07%

NYSE American 0

0.00%

0.03%

CHX 0

0.00%

0.01%

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 17,517, which is 32.15% of today's total volume.
Today's Lit volume is 36,976, which is 67.85%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 38.74%.
The average Lit volume has been 61.26%.

ATRA Volume by Exchange

Nasdaq GSM

Off Exchange

Cboe BZX

NYSE Arca

Cboe EDGX

IEX

Cboe BYX

Nasdaq BX

MEMX

NYSE

MIAX Pearl