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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

Market Open

Feb 25, 2026 10:53:12 AM EST

4.68USD+11.164%(+0.47)47,039

4.58Bid 4.63Ask 0.05Spread

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

OverviewHistoricalDark Pool PrintsShortsMore

ATRA Volume Feb 25, 2026 10:34:57 AM EST

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	31.47	14,705	54.80
Nasdaq GSM	25.05	11,706	20.79
MEMX	18.35	8,574	2.45
NYSE Arca	8.66	4,046	7.66
Cboe EDGX	6.11	2,857	7.09
Cboe BZX	5.21	2,434	2.04
IEX	1.97	919	1.91
Cboe BYX	1.40	656	0.54
Nasdaq BX	0.91	425	0.46
Cboe EDGA	0.64	300	0.26
NYSE	0.24	110	0.63
MIAX Pearl	0.00	0	0.88
Nasdaq PHLX	0.00	0	0.20
NYSE National	0.00	0	0.13
NYSE American	0.00	0	0.12
CHX	0.00	0	0.04

chartexchange.com

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

ATRA Nutrition Facts

0.09 servings per container

Serving size

493.94K

Calories

46.73K

% Day

% Avg

Off Exchange¹ 15K

31.47%

54.80%

Nasdaq GSM 12K

25.05%

20.79%

MEMX 9K

18.35%

2.45%

NYSE Arca 4K

8.66%

7.66%

Cboe EDGX 3K

6.11%

7.09%

Cboe BZX 2K

5.21%

2.04%

IEX 919

1.97%

1.91%

Cboe BYX 656

1.40%

0.54%

Nasdaq BX 425

0.91%

0.46%

Cboe EDGA 300

0.64%

0.26%

NYSE 110

0.24%

0.63%

MIAX Pearl 0

0.00%

0.88%

Nasdaq PHLX 0

0.00%

0.20%

NYSE National 0

0.00%

0.13%

NYSE American 0

0.00%

0.12%

CHX 0

0.00%

0.04%

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 14,705, which is 31.47% of today's total volume.
Today's Lit volume is 32,027, which is 68.53%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 54.80%.
The average Lit volume has been 45.20%.

ATRA Volume by Exchange

Off Exchange

Nasdaq GSM

MEMX

NYSE Arca

Cboe EDGX

Cboe BZX

IEX

Cboe BYX

Nasdaq BX

Cboe EDGA

NYSE