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GBIO
Generation Bio Co. Common Stock
stock NASDAQ

Inactive

Feb 6, 2026

5.34USD-6.969%(-0.40)551,924

Pre-market

0.00USD-100.000%(-5.74)0

After-hours

0.00USD0.000%(0.00)0

OverviewHistoricalDark Pool LevelsShortsMore

GBIO Volume Dec 31, 1969

Exchange	Day%	Volume	30D%
Nasdaq GSM	68.97	380,653	33.95
Off Exchange¹	17.66	97,485	39.89
NYSE Arca	4.10	22,602	6.11
IEX	2.69	14,862	5.45
Cboe BZX	2.23	12,334	1.62
Cboe EDGX	1.64	9,028	6.01
NYSE	1.14	6,279	0.74
MEMX	0.75	4,145	2.51
Cboe BYX	0.59	3,243	2.54
Nasdaq BX	0.09	501	0.30
Cboe EDGA	0.07	403	0.24
Nasdaq PHLX	0.04	200	0.12
MIAX Pearl	0.03	189	0.14
NYSE National	0.00	0	0.34
NYSE American	0.00	0	0.02
CHX	0.00	0	0.02
LTSE	0.00	0	0.00
24X National	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.

GBIO Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 97,485, which is 17.66% of today's total volume.
Today's Lit volume is 454,439, which is 82.34%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 39.89%.
The average Lit volume has been 60.11%.

GBIO Volume by Exchange

Nasdaq GSM

Off Exchange

NYSE Arca

IEX

Cboe BZX

Cboe EDGX

NYSE

MEMX

Cboe BYX

Nasdaq BX

Cboe EDGA