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QLYS
Qualys, Inc. Common Stock
stock NASDAQ

At Close

Aug 20, 2026 3:59:51 PM EDT

182.04USD-2.483%(-4.64)399,282

156.26Bid 207.77Ask 51.51Spread

Pre-market

Aug 20, 2026 9:10:30 AM EDT

186.18USD-0.268%(-0.50)185

After-hours

Aug 20, 2026 4:00:30 PM EDT

182.21USD+0.091%(+0.17)65,934

OverviewOptionsHistoricalExchange VolumeShortsMore

QLYS Volume Aug 20, 2026

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Exchange	Day%	Volume	30D%
Off Exchange¹	40.72	164,182	42.99
Nasdaq GSM	37.80	152,401	35.47
Cboe BZX	7.00	28,204	3.40
NYSE Arca	5.49	22,137	4.67
IEX	4.13	16,649	6.53
Cboe EDGX	1.76	7,083	2.38
NYSE	1.15	4,617	1.34
MEMX	0.56	2,241	0.65
Nasdaq BX	0.41	1,666	0.44
Cboe BYX	0.41	1,665	0.86
Cboe EDGA	0.16	636	0.29
Nasdaq PHLX	0.13	542	0.14
MIAX Pearl	0.13	535	0.18
NYSE National	0.08	317	0.25
NYSE American	0.08	306	0.11
CHX	0.00	0	0.22
Texas Stock Exchange LLC	0.00	0	0.04
LTSE	0.00	0	0.02
24X National	0.00	0	0.01

chartexchange.com

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

QLYS Nutrition Facts

0.53 servings per container

Serving size

763.02K

Calories

403.18K

% Day

% Avg

Off Exchange¹ 164K

40.72%

42.99%

Nasdaq GSM 152K

37.80%

35.47%

Cboe BZX 28K

7.00%

3.40%

NYSE Arca 22K

5.49%

4.67%

IEX 17K

4.13%

6.53%

Cboe EDGX 7K

1.76%

2.38%

NYSE 5K

1.15%

1.34%

MEMX 2K

0.56%

0.65%

Nasdaq BX 2K

0.41%

0.44%

Cboe BYX 2K

0.41%

0.86%

Cboe EDGA 636

0.16%

0.29%

Nasdaq PHLX 542

0.13%

0.14%

MIAX Pearl 535

0.13%

0.18%

NYSE National 317

0.08%

0.25%

NYSE American 306

0.08%

0.11%

CHX 0

0.00%

0.22%

Texas Stock Exchange LLC 0

0.00%

0.04%

LTSE 0

0.00%

0.02%

24X National 0

0.00%

0.01%

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

chartexchange.com

QLYS Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 164,182, which is 40.72% of today's total volume.
Today's Lit volume is 238,999, which is 59.28%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 42.99%.
The average Lit volume has been 57.01%.

QLYS Volume by Exchange

Off Exchange

Nasdaq GSM

Cboe BZX

NYSE Arca

IEX

Cboe EDGX

NYSE

MEMX

Nasdaq BX

Cboe BYX

Cboe EDGA