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SION
Sionna Therapeutics, Inc. Common Stock
stock NASDAQ

Market Open

Aug 10, 2026 3:22:18 PM EDT

4.55USD-91.075%(-46.48)33,592,148

4.49Bid 4.56Ask 0.07Spread

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

OverviewOptionsHistoricalExchange VolumeShortsTrends

SION Volume Aug 10, 2026 3:05:03 PM EDT

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Exchange	Day%	Volume	30D%
Off Exchange¹	60.28	19,557,624	55.97
NYSE Arca	14.59	4,733,046	11.38
Nasdaq GSM	11.90	3,861,034	18.14
Cboe EDGX	3.56	1,154,488	3.03
Cboe BZX	2.65	858,346	2.80
IEX	2.06	668,152	3.42
MEMX	1.41	456,299	1.56
NYSE	0.92	298,168	0.98
Cboe BYX	0.77	248,567	0.81
MIAX Pearl	0.51	166,344	0.44
Nasdaq BX	0.46	149,847	0.53
Cboe EDGA	0.38	123,831	0.40
NYSE National	0.32	104,394	0.29
NYSE American	0.08	27,382	0.09
24X National	0.07	23,733	0.06
Nasdaq PHLX	0.03	11,243	0.07
CHX	0.01	4,645	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

54.55 servings per container

Serving size

594.84K

Calories

32.45M

% Day

% Avg

Off Exchange¹ 20M

60.28%

55.97%

NYSE Arca 5M

14.59%

11.38%

Nasdaq GSM 4M

11.90%

18.14%

Cboe EDGX 1M

3.56%

3.03%

Cboe BZX 858K

2.65%

2.80%

IEX 668K

2.06%

3.42%

MEMX 456K

1.41%

1.56%

NYSE 298K

0.92%

0.98%

Cboe BYX 249K

0.77%

0.81%

MIAX Pearl 166K

0.51%

0.44%

Nasdaq BX 150K

0.46%

0.53%

Cboe EDGA 124K

0.38%

0.40%

NYSE National 104K

0.32%

0.29%

NYSE American 27K

0.08%

0.09%

24X National 24K

0.07%

0.06%

Nasdaq PHLX 11K

0.03%

0.07%

CHX 5K

0.01%

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 19,557,624, which is 60.28% of today's total volume.
Today's Lit volume is 12,889,519, which is 39.72%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 55.97%.
The average Lit volume has been 44.03%.

SION Volume by Exchange

Off Exchange

NYSE Arca

Nasdaq GSM

Cboe EDGX

Cboe BZX

IEX

MEMX

NYSE

Cboe BYX

MIAX Pearl

Nasdaq BX