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ALNY
Alnylam Pharmaceuticals, Inc.
stock NASDAQ

At Close

Aug 20, 2026 3:59:57 PM EDT

229.30USD-5.484%(-13.31)1,685,977

212.80Bid 255.91Ask 43.11Spread

Pre-market

Aug 20, 2026 9:19:30 AM EDT

241.13USD-0.610%(-1.48)515

After-hours

Aug 20, 2026 4:00:30 PM EDT

228.76USD-0.238%(-0.54)187,141

OverviewOptionsHistoricalDark Pool PrintsShortsMore

ALNY Volume Aug 20, 2026 3:55:03 PM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	62.57	850,630	49.27
IEX	12.67	172,233	6.67
Nasdaq GSM	12.58	171,029	27.99
NYSE Arca	4.66	63,415	5.44
Cboe BZX	3.52	47,913	4.13
NYSE	1.16	15,804	1.35
Cboe EDGX	0.98	13,354	1.68
Cboe BYX	0.51	6,977	0.73
MEMX	0.43	5,836	0.98
Nasdaq BX	0.20	2,739	0.39
Cboe EDGA	0.16	2,228	0.38
MIAX Pearl	0.16	2,224	0.32
NYSE National	0.16	2,174	0.30
NYSE American	0.12	1,690	0.18
Nasdaq PHLX	0.05	629	0.11
CHX	0.03	394	0.05
24X National	0.02	208	0.01
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.

ALNY Nutrition Facts

0.62 servings per container

Serving size

2.21M

Calories

1.36M

% Day

% Avg

Off Exchange¹ 851K

62.57%

49.27%

IEX 172K

12.67%

6.67%

Nasdaq GSM 171K

12.58%

27.99%

NYSE Arca 63K

4.66%

5.44%

Cboe BZX 48K

3.52%

4.13%

NYSE 16K

1.16%

1.35%

Cboe EDGX 13K

0.98%

1.68%

Cboe BYX 7K

0.51%

0.73%

MEMX 6K

0.43%

0.98%

Nasdaq BX 3K

0.20%

0.39%

Cboe EDGA 2K

0.16%

0.38%

MIAX Pearl 2K

0.16%

0.32%

NYSE National 2K

0.16%

0.30%

NYSE American 2K

0.12%

0.18%

Nasdaq PHLX 629

0.05%

0.11%

CHX 394

0.03%

0.05%

24X National 208

0.02%

0.01%

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

ALNY Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 850,630, which is 62.57% of today's total volume.
Today's Lit volume is 508,847, which is 37.43%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 49.27%.
The average Lit volume has been 50.73%.

ALNY Volume by Exchange

Off Exchange

IEX

Nasdaq GSM

NYSE Arca

Cboe BZX

NYSE

Cboe EDGX

Cboe BYX

MEMX

Nasdaq BX

Cboe EDGA