Dark

ALT
Altimmune, Inc. Common Stock
stock NASDAQ

Jul 29, 2026

2.92USD-2.341%(-0.07)8,293,500

Pre-market

0.00USD0.000%(0.00)0

After-hours

0.00USD0.000%(0.00)0

OverviewOptionsHistoricalExchange VolumeShortsMore

ALT Volume Jul 29, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	51.98	4,102,720	46.30
Nasdaq GSM	18.47	1,457,610	31.16
IEX	8.44	665,851	4.94
NYSE Arca	5.87	463,342	6.32
Cboe EDGX	4.33	341,740	3.16
Cboe BZX	3.52	278,210	2.66
NYSE	1.62	127,697	1.27
Cboe BYX	1.49	117,601	0.98
MEMX	1.29	101,995	1.15
NYSE National	1.01	79,532	0.75
MIAX Pearl	0.90	70,917	0.49
Cboe EDGA	0.45	35,404	0.41
Nasdaq BX	0.42	33,349	0.16
NYSE American	0.13	10,354	0.10
CHX	0.04	3,325	0.07
Nasdaq PHLX	0.04	3,293	0.08
24X National	0.01	500	0.01
LTSE	0.00	0	0.00

chartexchange.com

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

ALT Nutrition Facts

1.70 servings per container

Serving size

4.65M

Calories

7.89M

% Day

% Avg

Off Exchange¹ 4M

51.98%

46.30%

Nasdaq GSM 1M

18.47%

31.16%

IEX 666K

8.44%

4.94%

NYSE Arca 463K

5.87%

6.32%

Cboe EDGX 342K

4.33%

3.16%

Cboe BZX 278K

3.52%

2.66%

NYSE 128K

1.62%

1.27%

Cboe BYX 118K

1.49%

0.98%

MEMX 102K

1.29%

1.15%

NYSE National 80K

1.01%

0.75%

MIAX Pearl 71K

0.90%

0.49%

Cboe EDGA 35K

0.45%

0.41%

Nasdaq BX 33K

0.42%

0.16%

NYSE American 10K

0.13%

0.10%

CHX 3K

0.04%

0.07%

Nasdaq PHLX 3K

0.04%

0.08%

24X National 500

0.01%

LTSE 0

0.00%

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

chartexchange.com

ALT Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 4,102,720, which is 51.98% of today's total volume.
Today's Lit volume is 3,790,720, which is 48.02%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 46.30%.
The average Lit volume has been 53.70%.

ALT Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

Cboe BZX

NYSE

Cboe BYX

MEMX

NYSE National

MIAX Pearl