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MRSN
Mersana Therapeutics, Inc. Common Stock
stock NASDAQ

At Close

Dec 24, 2025 12:59:41 PM EST

29.14USD+0.483%(+0.14)13,809

29.10Bid 29.15Ask 0.05Spread

Pre-market

0.00USD-100.000%(-29.00)0

After-hours

Dec 22, 2025 4:00:30 PM EST

28.92USD-0.293%(-0.08)0

OverviewOptionsHistoricalDark Pool PrintsShortsMore

MRSN Volume Dec 31, 1969

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	39.28	5,424	34.03
Nasdaq GSM	27.13	3,746	27.28
Cboe EDGX	15.03	2,076	8.20
NYSE Arca	7.42	1,024	20.36
MEMX	4.07	562	1.55
IEX	2.98	412	3.22
NYSE	2.62	362	0.45
Cboe BZX	1.17	161	1.95
Nasdaq BX	0.16	22	0.61
Cboe BYX	0.14	20	0.67
NYSE National	0.00	0	0.46
CHX	0.00	0	0.46
Cboe EDGA	0.00	0	0.43
MIAX Pearl	0.00	0	0.24
Nasdaq PHLX	0.00	0	0.06
NYSE American	0.00	0	0.02

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

MRSN Nutrition Facts

0.08 servings per container

Serving size

179.37K

Calories

13.81K

% Day

% Avg

Off Exchange¹ 5K

39.28%

34.03%

Nasdaq GSM 4K

27.13%

27.28%

Cboe EDGX 2K

15.03%

8.20%

NYSE Arca 1K

7.42%

20.36%

MEMX 562

4.07%

1.55%

IEX 412

2.98%

3.22%

NYSE 362

2.62%

0.45%

Cboe BZX 161

1.17%

1.95%

Nasdaq BX 22

0.16%

0.61%

Cboe BYX 20

0.14%

0.67%

NYSE National 0

0.00%

0.46%

CHX 0

0.00%

0.46%

Cboe EDGA 0

0.00%

0.43%

MIAX Pearl 0

0.00%

0.24%

Nasdaq PHLX 0

0.00%

0.06%

NYSE American 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

MRSN Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 5,424, which is 39.28% of today's total volume.
Today's Lit volume is 8,385, which is 60.72%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 34.03%.
The average Lit volume has been 65.97%.

MRSN Volume by Exchange

Off Exchange

Nasdaq GSM

Cboe EDGX

NYSE Arca

MEMX

IEX

NYSE

Cboe BZX

Nasdaq BX

Cboe BYX

CHX