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ATRA
Atara Biotherapeutics, Inc
stock NASDAQ

Market Open

Feb 25, 2026 12:09:16 PM EST

4.71USD+11.876%(+0.50)48,619

4.59Bid 4.68Ask 0.09Spread

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 12:02:43 PM EST

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Exchange	Day%	Volume	30D%
Off Exchange¹	36.93	50,477	54.66
MEMX	18.89	25,817	2.61
Nasdaq GSM	16.84	23,023	20.71
NYSE Arca	9.92	13,555	7.69
Cboe EDGX	4.65	6,352	7.06
MIAX Pearl	3.88	5,302	0.93
Cboe BZX	3.68	5,028	2.05
IEX	2.56	3,499	1.91
Cboe BYX	1.00	1,371	0.55
NYSE	0.77	1,052	0.63
Nasdaq BX	0.38	525	0.45
Cboe EDGA	0.29	400	0.26
NYSE American	0.15	200	0.12
NYSE National	0.07	100	0.13
Nasdaq PHLX	0.00	0	0.20
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

0.29 servings per container

Serving size

467.21K

Calories

136.70K

% Day

% Avg

Off Exchange¹ 50K

36.93%

54.66%

MEMX 26K

18.89%

2.61%

Nasdaq GSM 23K

16.84%

20.71%

NYSE Arca 14K

9.92%

7.69%

Cboe EDGX 6K

4.65%

7.06%

MIAX Pearl 5K

3.88%

0.93%

Cboe BZX 5K

3.68%

2.05%

IEX 3K

2.56%

1.91%

Cboe BYX 1K

1.00%

0.55%

NYSE 1K

0.77%

0.63%

Nasdaq BX 525

0.38%

0.45%

Cboe EDGA 400

0.29%

0.26%

NYSE American 200

0.15%

0.12%

NYSE National 100

0.07%

0.13%

Nasdaq PHLX 0

0.00%

0.20%

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 50,477, which is 36.93% of today's total volume.
Today's Lit volume is 86,224, which is 63.07%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 54.66%.
The average Lit volume has been 45.34%.

ATRA Volume by Exchange

Off Exchange

MEMX

Nasdaq GSM

NYSE Arca

Cboe EDGX

MIAX Pearl

Cboe BZX

IEX

Cboe BYX

NYSE

Nasdaq BX