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MRSN
Mersana Therapeutics, Inc. Common Stock
stock NASDAQ

At Close

Sep 15, 2025 3:59:30 PM EDT

7.17USD+0.420%(+0.03)30,172

0.00Bid 0.00Ask 0.00Spread

Pre-market

Sep 15, 2025 8:48:30 AM EDT

7.15USD+0.140%(+0.01)100

After-hours

Sep 12, 2025 4:28:30 PM EDT

7.28USD+1.961%(+0.14)0

OverviewOptionsHistoricalExchange VolumeShortsMore

MRSN Volume Sep 15, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	59.06	17,820	46.41
Nasdaq GSM	21.28	6,420	23.89
NYSE Arca	5.46	1,647	10.14
NYSE	3.67	1,106	0.71
MEMX	2.83	854	1.21
Cboe BZX	2.67	806	5.24
IEX	1.97	595	1.59
Cboe EDGX	1.10	333	8.47
MIAX Pearl	0.99	300	0.35
Cboe EDGA	0.85	256	0.43
Nasdaq BX	0.08	25	0.25
NYSE National	0.03	9	0.28
Cboe BYX	0.00	1	0.90
NYSE American	0.00	0	0.08
Nasdaq PHLX	0.00	0	0.05
CHX	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.

MRSN Nutrition Facts

0.36 servings per container

Serving size

84.58K

Calories

30.17K

% Day

% Avg

Off Exchange¹ 18K

59.06%

46.41%

Nasdaq GSM 6K

21.28%

23.89%

NYSE Arca 2K

5.46%

10.14%

NYSE 1K

3.67%

0.71%

MEMX 854

2.83%

1.21%

Cboe BZX 806

2.67%

5.24%

IEX 595

1.97%

1.59%

Cboe EDGX 333

1.10%

8.47%

MIAX Pearl 300

0.99%

0.35%

Cboe EDGA 256

0.85%

0.43%

Nasdaq BX 25

0.08%

0.25%

NYSE National 9

0.03%

0.28%

Cboe BYX 1

0.00%

0.90%

NYSE American 0

0.00%

0.08%

Nasdaq PHLX 0

0.00%

0.05%

CHX 0

0.00%

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

chartexchange.com

MRSN Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 17,820, which is 59.06% of today's total volume.
Today's Lit volume is 12,352, which is 40.94%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 46.41%.
The average Lit volume has been 53.59%.

MRSN Volume by Exchange

Off Exchange

Nasdaq GSM

NYSE Arca

NYSE

MEMX

Cboe BZX

IEX

Cboe EDGX

MIAX Pearl

Cboe EDGA

Nasdaq BX