Dark

AMPH
Amphastar Pharmaceuticals, Inc.
stock NASDAQ

At Close

May 16, 2025 3:59:30 PM EDT

24.86USD+2.220%(+0.54)510,675

0.00Bid 0.00Ask 0.00Spread

Pre-market

May 12, 2025 9:27:50 AM EDT

23.78USD-2.220%(-0.54)0

After-hours

May 16, 2025 4:00:30 PM EDT

24.86USD0.000%(0.00)1,521

OverviewOptionsHistoricalExchange VolumeShortsMore

AMPH Volume May 16, 2025

[NF]

Exchange	Day%	Volume	30D%
Nasdaq GSM	45.87	234,226	38.82
Off Exchange¹	34.46	175,994	40.13
NYSE Arca	4.90	25,011	4.15
IEX	4.72	24,122	5.16
Cboe BZX	3.41	17,427	4.21
Cboe EDGX	2.20	11,233	2.62
NYSE National	1.27	6,503	0.16
NYSE	0.79	4,043	1.17
Cboe BYX	0.73	3,732	1.02
MEMX	0.68	3,478	0.95
NYSE American	0.35	1,805	0.11
Cboe EDGA	0.22	1,115	0.62
MIAX Pearl	0.19	989	0.22
Nasdaq BX	0.13	676	0.40
Nasdaq PHLX	0.06	321	0.21
CHX	0.00	0	0.04
LTSE	0.00	0	0.02

chartexchange.com

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

AMPH Nutrition Facts

0.80 servings per container

Serving size

636.71K

Calories

510.68K

% Day

% Avg

Nasdaq GSM 234K

45.87%

38.82%

Off Exchange¹ 176K

34.46%

40.13%

NYSE Arca 25K

4.90%

4.15%

IEX 24K

4.72%

5.16%

Cboe BZX 17K

3.41%

4.21%

Cboe EDGX 11K

2.20%

2.62%

NYSE National 7K

1.27%

0.16%

NYSE 4K

0.79%

1.17%

Cboe BYX 4K

0.73%

1.02%

MEMX 3K

0.68%

0.95%

NYSE American 2K

0.35%

0.11%

Cboe EDGA 1K

0.22%

0.62%

MIAX Pearl 989

0.19%

0.22%

Nasdaq BX 676

0.13%

0.40%

Nasdaq PHLX 321

0.06%

0.21%

CHX 0

0.00%

0.04%

LTSE 0

0.00%

0.02%

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

chartexchange.com

AMPH Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 175,994, which is 34.46% of today's total volume.
Today's Lit volume is 334,681, which is 65.54%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 40.13%.
The average Lit volume has been 59.87%.

AMPH Volume by Exchange

Nasdaq GSM

Off Exchange

NYSE Arca

IEX

Cboe BZX

Cboe EDGX

NYSE National

NYSE

Cboe BYX

MEMX

NYSE American