Dark

MASS
908 Devices Inc. Common Stock
stock NASDAQ

At Close

Dec 15, 2025 3:59:53 PM EST

5.91USD-1.254%(-0.07)598,473

0.00Bid 0.00Ask 0.00Spread

Pre-market

Dec 15, 2025 8:59:30 AM EST

6.10USD+2.007%(+0.12)204

After-hours

Dec 11, 2025 4:00:30 PM EST

6.40USD-0.156%(-0.01)0

OverviewOptionsHistoricalExchange VolumeShortsMore

MASS Volume Dec 15, 2025

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Exchange	Day%	Volume	30D%
Off Exchange¹	32.92	197,044	35.97
Nasdaq GSM	32.58	194,956	36.95
IEX	10.84	64,880	6.52
NYSE Arca	7.03	42,063	6.41
Cboe BZX	6.04	36,147	4.73
Cboe EDGX	3.75	22,414	2.77
NYSE	3.30	19,759	2.52
MEMX	2.33	13,932	1.22
NYSE National	0.56	3,368	0.36
Nasdaq PHLX	0.26	1,541	0.19
Nasdaq BX	0.18	1,093	0.51
Cboe EDGA	0.08	487	0.82
MIAX Pearl	0.06	352	0.17
Cboe BYX	0.05	287	0.74
NYSE American	0.03	150	0.09
CHX	0.00	0	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

1.55 servings per container

Serving size

386.43K

Calories

598.47K

% Day

% Avg

Off Exchange¹ 197K

32.92%

35.97%

Nasdaq GSM 195K

32.58%

36.95%

IEX 65K

10.84%

6.52%

NYSE Arca 42K

7.03%

6.41%

Cboe BZX 36K

6.04%

4.73%

Cboe EDGX 22K

3.75%

2.77%

NYSE 20K

3.30%

2.52%

MEMX 14K

2.33%

1.22%

NYSE National 3K

0.56%

0.36%

Nasdaq PHLX 2K

0.26%

0.19%

Nasdaq BX 1K

0.18%

0.51%

Cboe EDGA 487

0.08%

0.82%

MIAX Pearl 352

0.06%

0.17%

Cboe BYX 287

0.05%

0.74%

NYSE American 150

0.03%

0.09%

CHX 0

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 197,044, which is 32.92% of today's total volume.
Today's Lit volume is 401,429, which is 67.08%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 35.97%.
The average Lit volume has been 64.03%.

MASS Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

NYSE

MEMX

NYSE National

Nasdaq PHLX

Nasdaq BX