Dark

ALKS
Alkermes Inc. plc
stock NASDAQ

At Close

Aug 20, 2026 3:59:58 PM EDT

48.03USD-4.285%(-2.15)1,564,054

41.46Bid 48.04Ask 6.58Spread

Pre-market

Aug 20, 2026 9:23:30 AM EDT

49.60USD-1.156%(-0.58)312

After-hours

Aug 20, 2026 4:00:30 PM EDT

48.02USD-0.021%(-0.01)449,120

OverviewOptionsHistoricalExchange VolumeShortsMore

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

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	55.40	514,592	39.34
Nasdaq GSM	15.36	142,633	38.38
IEX	12.00	111,462	6.47
NYSE Arca	6.44	59,825	5.22
Cboe BZX	3.98	36,952	3.64
NYSE	1.26	11,715	1.24
Cboe EDGX	1.19	11,042	1.87
Cboe BYX	0.95	8,793	0.92
Cboe EDGA	0.63	5,863	0.60
MEMX	0.55	5,099	0.63
Nasdaq BX	0.50	4,614	0.59
NYSE National	0.33	3,082	0.23
CHX	0.30	2,825	0.07
NYSE American	0.29	2,655	0.14
MIAX Pearl	0.23	2,171	0.20
Nasdaq PHLX	0.23	2,137	0.14
LTSE	0.20	1,828	0.14
24X National	0.17	1,608	0.16
Texas Stock Exchange LLC	0.00	0	0.01

chartexchange.com

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

ALKS Nutrition Facts

0.57 servings per container

Serving size

1.63M

Calories

928.90K

% Day

% Avg

Off Exchange¹ 515K

55.40%

39.34%

Nasdaq GSM 143K

15.36%

38.38%

IEX 111K

12.00%

6.47%

NYSE Arca 60K

6.44%

5.22%

Cboe BZX 37K

3.98%

3.64%

NYSE 12K

1.26%

1.24%

Cboe EDGX 11K

1.19%

1.87%

Cboe BYX 9K

0.95%

0.92%

Cboe EDGA 6K

0.63%

0.60%

MEMX 5K

0.55%

0.63%

Nasdaq BX 5K

0.50%

0.59%

NYSE National 3K

0.33%

0.23%

CHX 3K

0.30%

0.07%

NYSE American 3K

0.29%

0.14%

MIAX Pearl 2K

0.23%

0.20%

Nasdaq PHLX 2K

0.23%

0.14%

LTSE 2K

0.20%

0.14%

24X National 2K

0.17%

0.16%

Texas Stock Exchange LLC 0

0.00%

0.01%

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

chartexchange.com

ALKS Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 514,592, which is 55.40% of today's total volume.
Today's Lit volume is 414,304, which is 44.60%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 39.34%.
The average Lit volume has been 60.66%.

ALKS Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

NYSE

Cboe EDGX

Cboe BYX

Cboe EDGA

MEMX

Nasdaq BX