Dark

IONS
Ionis Pharmaceuticals, Inc. Common Stock
stock NASDAQ

At Close

Dec 12, 2025 3:59:50 PM EST

80.85USD+2.161%(+1.71)1,468,875

75.49Bid 84.39Ask 8.90Spread

Pre-market

Dec 11, 2025 9:27:40 AM EST

77.91USD-1.554%(-1.23)0

After-hours

Dec 12, 2025 4:17:30 PM EST

80.99USD+0.178%(+0.14)9,957

OverviewOptionsHistoricalDark Pool PrintsShortsMore

IONS Volume Dec 12, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	43.93	645,331	52.22
Nasdaq GSM	39.41	578,947	29.18
IEX	4.61	67,713	4.16
NYSE Arca	4.23	62,103	4.61
Cboe BZX	2.32	34,067	3.02
Cboe EDGX	2.15	31,627	2.28
NYSE	0.89	13,106	1.23
MEMX	0.70	10,228	0.93
MIAX Pearl	0.56	8,207	0.23
Nasdaq BX	0.43	6,277	0.47
Cboe EDGA	0.26	3,792	0.56
Cboe BYX	0.19	2,842	0.56
NYSE American	0.11	1,652	0.09
Nasdaq PHLX	0.09	1,392	0.16
NYSE National	0.09	1,312	0.27
CHX	0.02	279	0.02
LTSE	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.

IONS Nutrition Facts

0.52 servings per container

Serving size

2.85M

Calories

1.47M

% Day

% Avg

Off Exchange¹ 645K

43.93%

52.22%

Nasdaq GSM 579K

39.41%

29.18%

IEX 68K

4.61%

4.16%

NYSE Arca 62K

4.23%

4.61%

Cboe BZX 34K

2.32%

3.02%

Cboe EDGX 32K

2.15%

2.28%

NYSE 13K

0.89%

1.23%

MEMX 10K

0.70%

0.93%

MIAX Pearl 8K

0.56%

0.23%

Nasdaq BX 6K

0.43%

0.47%

Cboe EDGA 4K

0.26%

0.56%

Cboe BYX 3K

0.19%

0.56%

NYSE American 2K

0.11%

0.09%

Nasdaq PHLX 1K

0.09%

0.16%

NYSE National 1K

0.09%

0.27%

CHX 279

0.02%

LTSE 0

0.00%

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

chartexchange.com

IONS Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 645,331, which is 43.93% of today's total volume.
Today's Lit volume is 823,544, which is 56.07%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 52.22%.
The average Lit volume has been 47.78%.

IONS Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

NYSE

MEMX

MIAX Pearl

Nasdaq BX

Cboe EDGA