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ALT
Altimmune, Inc. Common Stock
stock NASDAQ

At Close

May 16, 2025 3:59:30 PM EDT

5.59USD-3.374%(-0.20)2,140,858

0.00Bid 0.00Ask 0.00Spread

Pre-market

May 16, 2025 9:20:30 AM EDT

5.81USD+0.519%(+0.03)14,635

After-hours

May 16, 2025 4:53:30 PM EDT

5.56USD-0.448%(-0.03)5,918

OverviewOptionsHistoricalDark Pool PrintsShortsMore

ALT Volume May 16, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	52.30	1,119,697	49.60
Nasdaq GSM	23.50	503,169	25.49
NYSE Arca	5.67	121,485	7.16
Cboe EDGX	4.98	106,698	4.81
MEMX	3.10	66,404	2.46
IEX	3.07	65,767	3.32
Cboe BZX	2.94	63,014	3.07
MIAX Pearl	1.74	37,301	1.06
NYSE	1.44	30,855	1.21
Cboe EDGA	0.78	16,770	0.57
Cboe BYX	0.18	3,839	0.56
NYSE National	0.17	3,640	0.37
Nasdaq PHLX	0.05	1,035	0.08
NYSE American	0.05	1,004	0.08
Nasdaq BX	0.01	179	0.11
CHX	0.00	1	0.05
LTSE	0.00	0	0.00

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

ALT Nutrition Facts

0.91 servings per container

Serving size

2.34M

Calories

2.14M

% Day

% Avg

Off Exchange¹ 1M

52.30%

49.60%

Nasdaq GSM 503K

23.50%

25.49%

NYSE Arca 121K

5.67%

7.16%

Cboe EDGX 107K

4.98%

4.81%

MEMX 66K

3.10%

2.46%

IEX 66K

3.07%

3.32%

Cboe BZX 63K

2.94%

3.07%

MIAX Pearl 37K

1.74%

1.06%

NYSE 31K

1.44%

1.21%

Cboe EDGA 17K

0.78%

0.57%

Cboe BYX 4K

0.18%

0.56%

NYSE National 4K

0.17%

0.37%

Nasdaq PHLX 1K

0.05%

0.08%

NYSE American 1K

0.05%

0.08%

Nasdaq BX 179

0.01%

0.11%

CHX 1

0.00%

0.05%

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 1,119,697, which is 52.30% of today's total volume.
Today's Lit volume is 1,021,161, which is 47.70%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 49.60%.
The average Lit volume has been 50.40%.

ALT Volume by Exchange

Off Exchange

Nasdaq GSM

NYSE Arca

Cboe EDGX

MEMX

IEX

Cboe BZX

MIAX Pearl

NYSE

Cboe EDGA

Cboe BYX