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SION
Sionna Therapeutics, Inc. Common Stock
stock NASDAQ

At Close

Aug 10, 2026 3:59:54 PM EDT

4.50USD-91.183%(-46.53)37,836,515

4.01Bid 4.51Ask 0.50Spread

Pre-market

Aug 10, 2026 9:29:30 AM EDT

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

After-hours

Aug 10, 2026 4:33:30 PM EDT

4.46USD-0.889%(-0.04)163,274

OverviewOptionsHistoricalExchange VolumeShortsTrends

SION Volume Aug 10, 2026

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Exchange	Day%	Volume	30D%
Off Exchange¹	60.25	21,983,478	56.27
NYSE Arca	13.78	5,028,509	11.07
Nasdaq GSM	12.63	4,607,165	18.17
Cboe EDGX	3.42	1,248,365	2.98
Cboe BZX	2.69	980,776	2.82
IEX	2.23	813,743	3.43
MEMX	1.38	504,012	1.53
NYSE	0.89	323,094	0.95
Cboe BYX	0.83	301,880	0.85
Nasdaq BX	0.49	177,404	0.54
MIAX Pearl	0.47	171,410	0.41
Cboe EDGA	0.40	145,253	0.41
NYSE National	0.37	133,734	0.32
NYSE American	0.08	28,547	0.08
24X National	0.07	24,459	0.06
Nasdaq PHLX	0.03	11,716	0.06
CHX	0.01	5,008	0.02
LTSE	0.00	100	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

61.34 servings per container

Serving size

594.84K

Calories

36.49M

% Day

% Avg

Off Exchange¹ 22M

60.25%

56.27%

NYSE Arca 5M

13.78%

11.07%

Nasdaq GSM 5M

12.63%

18.17%

Cboe EDGX 1M

3.42%

2.98%

Cboe BZX 981K

2.69%

2.82%

IEX 814K

2.23%

3.43%

MEMX 504K

1.38%

1.53%

NYSE 323K

0.89%

0.95%

Cboe BYX 302K

0.83%

0.85%

Nasdaq BX 177K

0.49%

0.54%

MIAX Pearl 171K

0.47%

0.41%

Cboe EDGA 145K

0.40%

0.41%

NYSE National 134K

0.37%

0.32%

NYSE American 29K

0.08%

24X National 24K

0.07%

0.06%

Nasdaq PHLX 12K

0.03%

0.06%

CHX 5K

0.01%

0.02%

LTSE 100

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 21,983,478, which is 60.25% of today's total volume.
Today's Lit volume is 14,505,175, which is 39.75%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 56.27%.
The average Lit volume has been 43.73%.

SION Volume by Exchange

Off Exchange

NYSE Arca

Nasdaq GSM

Cboe EDGX

Cboe BZX

IEX

MEMX

NYSE

Cboe BYX

Nasdaq BX

MIAX Pearl