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ALT
Altimmune, Inc. Common Stock
stock NASDAQ

Market Open

Aug 11, 2026 2:24:17 PM EDT

3.02USD-0.822%(-0.02)1,399,313

3.01Bid 3.02Ask 0.01Spread

Pre-market

Aug 11, 2026 9:27:30 AM EDT

3.05USD+0.329%(+0.01)3,535

After-hours

Aug 10, 2026 4:17:30 PM EDT

3.06USD+0.824%(+0.02)0

OverviewOptionsHistoricalDark Pool LevelsShortsMore

ALT Volume Aug 11, 2026 2:04:54 PM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	74.33	1,006,915	48.04
Nasdaq GSM	10.00	135,447	25.10
IEX	5.16	69,886	5.95
NYSE Arca	3.40	46,109	7.50
Cboe BZX	1.55	21,040	3.41
Cboe BYX	1.43	19,307	1.16
Cboe EDGX	1.40	18,967	3.50
NYSE National	1.05	14,194	0.91
Nasdaq PHLX	0.45	6,029	0.10
NYSE	0.44	6,010	1.38
MEMX	0.32	4,306	1.42
MIAX Pearl	0.32	4,294	0.64
Cboe EDGA	0.10	1,319	0.49
Nasdaq BX	0.03	398	0.18
CHX	0.02	263	0.08
NYSE American	0.01	200	0.11
24X National	0.00	0	0.02
Texas Stock Exchange LLC	0.00	0	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

0.31 servings per container

Serving size

4.40M

Calories

1.35M

% Day

% Avg

Off Exchange¹ 1M

74.33%

48.04%

Nasdaq GSM 135K

10.00%

25.10%

IEX 70K

5.16%

5.95%

NYSE Arca 46K

3.40%

7.50%

Cboe BZX 21K

1.55%

3.41%

Cboe BYX 19K

1.43%

1.16%

Cboe EDGX 19K

1.40%

3.50%

NYSE National 14K

1.05%

0.91%

Nasdaq PHLX 6K

0.45%

0.10%

NYSE 6K

0.44%

1.38%

MEMX 4K

0.32%

1.42%

MIAX Pearl 4K

0.32%

0.64%

Cboe EDGA 1K

0.10%

0.49%

Nasdaq BX 398

0.03%

0.18%

CHX 263

0.02%

0.08%

NYSE American 200

0.01%

0.11%

24X National 0

0.00%

0.02%

Texas Stock Exchange LLC 0

0.00%

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 1,006,915, which is 74.33% of today's total volume.
Today's Lit volume is 347,769, which is 25.67%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 48.04%.
The average Lit volume has been 51.96%.

ALT Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe BYX

Cboe EDGX

NYSE National

Nasdaq PHLX

NYSE

MEMX