Dark

MRK
Merck & Co., Inc.
stock NYSE

Market Open

Jul 22, 2026 3:00:39 PM EDT

127.81USD+1.228%(+1.55)3,889,293

127.78Bid 127.84Ask 0.06Spread

Pre-market

Jul 22, 2026 9:27:30 AM EDT

127.06USD+0.634%(+0.80)3,101

After-hours

Jul 21, 2026 4:24:30 PM EDT

126.26USD0.000%(0.00)0

OverviewOptionsHistoricalExchange VolumeShortsMore

MRK Volume Jul 22, 2026 2:35:02 PM EDT

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Exchange	Day%	Volume	30D%
Off Exchange¹	52.57	1,951,359	41.51
Nasdaq GSM	11.99	445,112	9.19
NYSE	11.45	425,132	31.22
NYSE Arca	6.05	224,540	4.38
Cboe BZX	5.72	212,186	3.32
IEX	4.16	154,550	3.72
Cboe EDGX	3.50	129,978	1.76
MEMX	1.26	46,938	0.80
Cboe EDGA	1.17	43,328	0.44
Cboe BYX	0.77	28,712	0.25
Nasdaq BX	0.48	17,746	0.20
NYSE National	0.32	11,809	0.15
CHX	0.25	9,377	2.68
MIAX Pearl	0.19	7,043	0.16
NYSE American	0.06	2,159	0.11
Nasdaq PHLX	0.05	1,693	0.09
24X National	0.01	375	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.

MRK Nutrition Facts

0.33 servings per container

Serving size

11.19M

Calories

3.71M

% Day

% Avg

Off Exchange¹ 2M

52.57%

41.51%

Nasdaq GSM 445K

11.99%

9.19%

NYSE 425K

11.45%

31.22%

NYSE Arca 225K

6.05%

4.38%

Cboe BZX 212K

5.72%

3.32%

IEX 155K

4.16%

3.72%

Cboe EDGX 130K

3.50%

1.76%

MEMX 47K

1.26%

0.80%

Cboe EDGA 43K

1.17%

0.44%

Cboe BYX 29K

0.77%

0.25%

Nasdaq BX 18K

0.48%

0.20%

NYSE National 12K

0.32%

0.15%

CHX 9K

0.25%

2.68%

MIAX Pearl 7K

0.19%

0.16%

NYSE American 2K

0.06%

0.11%

Nasdaq PHLX 2K

0.05%

0.09%

24X National 375

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

MRK Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 1,951,359, which is 52.57% of today's total volume.
Today's Lit volume is 1,760,678, which is 47.43%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 41.51%.
The average Lit volume has been 58.49%.

MRK Volume by Exchange

Off Exchange

Nasdaq GSM

NYSE

NYSE Arca

Cboe BZX

IEX

Cboe EDGX

MEMX

Cboe EDGA

Cboe BYX

Nasdaq BX