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AMPH
Amphastar Pharmaceuticals, Inc.
stock NASDAQ

At Close

Jul 29, 2026 3:59:53 PM EDT

20.58USD+2.159%(+0.43)321,672

0.00Bid 0.00Ask 0.00Spread

Pre-market

0.00USD-100.000%(-20.15)0

After-hours

Jul 29, 2026 4:37:30 PM EDT

19.44USD-5.550%(-1.14)329

OverviewOptionsHistoricalExchange VolumeShortsMore

AMPH Volume Jul 29, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	45.72	108,692	37.48
Nasdaq GSM	26.27	62,462	43.42
IEX	8.77	20,854	5.48
NYSE Arca	5.46	12,987	3.67
Cboe EDGX	5.15	12,235	1.97
Cboe BZX	3.60	8,557	3.25
NYSE	1.59	3,768	1.18
MEMX	0.85	2,023	0.71
Cboe BYX	0.66	1,574	0.72
Cboe EDGA	0.46	1,089	0.64
Nasdaq PHLX	0.43	1,031	0.12
LTSE	0.35	837	0.22
Nasdaq BX	0.22	521	0.35
MIAX Pearl	0.19	448	0.12
CHX	0.15	366	0.38
NYSE American	0.11	253	0.08
NYSE National	0.01	29	0.21
24X National	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.

AMPH Nutrition Facts

0.46 servings per container

Serving size

516.67K

Calories

237.73K

% Day

% Avg

Off Exchange¹ 109K

45.72%

37.48%

Nasdaq GSM 62K

26.27%

43.42%

IEX 21K

8.77%

5.48%

NYSE Arca 13K

5.46%

3.67%

Cboe EDGX 12K

5.15%

1.97%

Cboe BZX 9K

3.60%

3.25%

NYSE 4K

1.59%

1.18%

MEMX 2K

0.85%

0.71%

Cboe BYX 2K

0.66%

0.72%

Cboe EDGA 1K

0.46%

0.64%

Nasdaq PHLX 1K

0.43%

0.12%

LTSE 837

0.35%

0.22%

Nasdaq BX 521

0.22%

0.35%

MIAX Pearl 448

0.19%

0.12%

CHX 366

0.15%

0.38%

NYSE American 253

0.11%

0.08%

NYSE National 29

0.01%

0.21%

24X National 0

0.00%

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 108,692, which is 45.72% of today's total volume.
Today's Lit volume is 129,034, which is 54.28%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 37.48%.
The average Lit volume has been 62.52%.

AMPH Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

Cboe BZX

NYSE

MEMX

Cboe BYX

Cboe EDGA

Nasdaq PHLX