Dark

OSBC
Old Second Bancorp Inc
stock NASDAQ

At Close

Jul 21, 2026 3:59:58 PM EDT

23.66USD+0.254%(+0.06)472,514

15.13Bid 2147.48Ask 2132.35Spread

Pre-market

0.00USD-100.000%(-23.60)0

After-hours

Jul 21, 2026 4:00:30 PM EDT

23.68USD+0.085%(+0.02)56,773

OverviewOptionsHistoricalExchange VolumeShortsMore

OSBC Volume Jul 21, 2026

[NF]

Exchange	Day%	Volume	30D%
Nasdaq GSM	43.62	206,097	50.75
Off Exchange¹	27.78	131,261	27.06
NYSE Arca	7.60	35,920	5.67
IEX	6.79	32,071	5.73
Cboe BZX	4.67	22,050	3.69
Cboe EDGX	4.32	20,419	3.03
NYSE	2.19	10,357	1.43
MEMX	0.72	3,382	0.71
Cboe EDGA	0.64	3,043	0.46
Cboe BYX	0.46	2,180	0.65
NYSE National	0.27	1,260	0.16
Nasdaq PHLX	0.25	1,169	0.12
MIAX Pearl	0.19	906	0.10
NYSE American	0.17	819	0.14
Nasdaq BX	0.17	817	0.23
CHX	0.16	757	0.07
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.

OSBC Nutrition Facts

1.16 servings per container

Serving size

406.22K

Calories

472.51K

% Day

% Avg

Nasdaq GSM 206K

43.62%

50.75%

Off Exchange¹ 131K

27.78%

27.06%

NYSE Arca 36K

7.60%

5.67%

IEX 32K

6.79%

5.73%

Cboe BZX 22K

4.67%

3.69%

Cboe EDGX 20K

4.32%

3.03%

NYSE 10K

2.19%

1.43%

MEMX 3K

0.72%

0.71%

Cboe EDGA 3K

0.64%

0.46%

Cboe BYX 2K

0.46%

0.65%

NYSE National 1K

0.27%

0.16%

Nasdaq PHLX 1K

0.25%

0.12%

MIAX Pearl 906

0.19%

0.10%

NYSE American 819

0.17%

0.14%

Nasdaq BX 817

0.17%

0.23%

CHX 757

0.16%

0.07%

LTSE 0

0.00%

24X National 0

0.00%

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

chartexchange.com

OSBC Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 131,261, which is 27.78% of today's total volume.
Today's Lit volume is 341,247, which is 72.22%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 27.06%.
The average Lit volume has been 72.94%.

OSBC Volume by Exchange

Nasdaq GSM

Off Exchange

NYSE Arca

IEX

Cboe BZX

Cboe EDGX

NYSE

MEMX

Cboe EDGA

Cboe BYX

NYSE National