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SION
Sionna Therapeutics, Inc. Common Stock
stock NASDAQ

Market Open

Aug 10, 2026 2:16:13 PM EDT

4.49USD-91.202%(-46.55)31,027,069

4.01Bid 4.49Ask 0.48Spread

Pre-market

Aug 10, 2026 9:29:30 AM EDT

4.85USD-90.497%(-46.18)2,397,213

After-hours

Aug 7, 2026 4:00:30 PM EDT

51.04USD+0.010%(+0.01)0

OverviewOptionsHistoricalDark Pool PrintsShortsTrends

SION Volume Aug 10, 2026 1:55:03 PM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	59.38	16,707,047	54.99
NYSE Arca	15.13	4,256,532	11.42
Nasdaq GSM	11.94	3,358,252	18.77
Cboe EDGX	3.80	1,069,143	3.13
Cboe BZX	2.61	734,208	2.79
IEX	2.13	598,830	3.60
MEMX	1.40	394,275	1.57
NYSE	0.93	260,441	0.99
Cboe BYX	0.77	215,325	0.81
MIAX Pearl	0.55	155,863	0.45
Nasdaq BX	0.45	126,740	0.53
Cboe EDGA	0.42	117,042	0.42
NYSE National	0.27	76,651	0.25
NYSE American	0.09	26,248	0.09
24X National	0.08	23,671	0.07
Nasdaq PHLX	0.03	9,676	0.07
CHX	0.02	4,509	0.03
LTSE	0.00	0	0.00
Texas Stock Exchange LLC	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.

SION Nutrition Facts

47.30 servings per container

Serving size

594.84K

Calories

28.13M

% Day

% Avg

Off Exchange¹ 17M

59.38%

54.99%

NYSE Arca 4M

15.13%

11.42%

Nasdaq GSM 3M

11.94%

18.77%

Cboe EDGX 1M

3.80%

3.13%

Cboe BZX 734K

2.61%

2.79%

IEX 599K

2.13%

3.60%

MEMX 394K

1.40%

1.57%

NYSE 260K

0.93%

0.99%

Cboe BYX 215K

0.77%

0.81%

MIAX Pearl 156K

0.55%

0.45%

Nasdaq BX 127K

0.45%

0.53%

Cboe EDGA 117K

0.42%

NYSE National 77K

0.27%

0.25%

NYSE American 26K

0.09%

24X National 24K

0.08%

0.07%

Nasdaq PHLX 10K

0.03%

0.07%

CHX 5K

0.02%

0.03%

LTSE 0

0.00%

Texas Stock Exchange LLC 0

0.00%

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

chartexchange.com

SION Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 16,707,047, which is 59.38% of today's total volume.
Today's Lit volume is 11,427,406, which is 40.62%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 54.99%.
The average Lit volume has been 45.01%.

SION Volume by Exchange

Off Exchange

NYSE Arca

Nasdaq GSM

Cboe EDGX

Cboe BZX

IEX

MEMX

NYSE

Cboe BYX

MIAX Pearl

Nasdaq BX