Dark

MASS
908 Devices Inc. Common Stock
stock NASDAQ

At Close

Dec 12, 2025 3:59:50 PM EST

5.97USD-6.719%(-0.43)450,117

0.00Bid 0.00Ask 0.00Spread

Pre-market

0.00USD-100.000%(-6.40)0

After-hours

Dec 11, 2025 4:00:30 PM EST

6.40USD-0.156%(-0.01)0

OverviewOptionsHistoricalDark Pool PrintsShortsMore

MASS Volume Dec 12, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	56.42	253,975	36.04
Nasdaq GSM	24.06	108,320	37.35
IEX	4.59	20,679	6.31
NYSE Arca	4.54	20,420	6.35
Cboe EDGX	3.24	14,574	2.70
Cboe BZX	2.11	9,504	4.65
NYSE	1.75	7,876	2.47
MEMX	1.30	5,857	1.16
NYSE National	0.57	2,548	0.34
Cboe EDGA	0.50	2,251	0.85
Cboe BYX	0.49	2,215	0.77
Nasdaq BX	0.25	1,134	0.52
Nasdaq PHLX	0.12	534	0.19
NYSE American	0.04	172	0.09
MIAX Pearl	0.01	57	0.18
CHX	0.00	1	0.03
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.

MASS Nutrition Facts

1.16 servings per container

Serving size

386.43K

Calories

450.12K

% Day

% Avg

Off Exchange¹ 254K

56.42%

36.04%

Nasdaq GSM 108K

24.06%

37.35%

IEX 21K

4.59%

6.31%

NYSE Arca 20K

4.54%

6.35%

Cboe EDGX 15K

3.24%

2.70%

Cboe BZX 10K

2.11%

4.65%

NYSE 8K

1.75%

2.47%

MEMX 6K

1.30%

1.16%

NYSE National 3K

0.57%

0.34%

Cboe EDGA 2K

0.50%

0.85%

Cboe BYX 2K

0.49%

0.77%

Nasdaq BX 1K

0.25%

0.52%

Nasdaq PHLX 534

0.12%

0.19%

NYSE American 172

0.04%

0.09%

MIAX Pearl 57

0.01%

0.18%

CHX 1

0.00%

0.03%

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

MASS Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 253,975, which is 56.42% of today's total volume.
Today's Lit volume is 196,142, which is 43.58%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 36.04%.
The average Lit volume has been 63.96%.

MASS Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

Cboe BZX

NYSE

MEMX

NYSE National

Cboe EDGA

Cboe BYX