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IRTC
iRhythm Holdings, Inc. Common Stock
stock NASDAQ

At Close

Sep 18, 2026 3:59:48 PM EDT

109.19USD-2.291%(-2.56)690,926

0.00Bid 0.00Ask 0.00Spread

Pre-market

Sep 18, 2026 9:26:30 AM EDT

112.25USD+0.447%(+0.50)1,246

After-hours

0.00USD0.000%(0.00)0

OverviewOptionsHistoricalExchange VolumeShortsMore

IRTC Volume Sep 18, 2026

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Exchange	Day%	Volume	30D%
Off Exchange¹	44.02	201,551	45.74
Nasdaq GSM	29.29	134,128	28.72
IEX	8.82	40,401	7.10
NYSE Arca	7.78	35,613	6.00
Cboe BZX	3.68	16,837	3.91
NYSE	1.72	7,855	1.69
Cboe EDGX	1.47	6,748	1.90
MEMX	0.71	3,250	0.68
Cboe BYX	0.53	2,410	1.22
MIAX Pearl	0.49	2,244	0.41
NYSE National	0.42	1,911	0.71
CHX	0.35	1,607	0.12
Nasdaq PHLX	0.22	991	0.17
Nasdaq BX	0.14	655	0.81
Cboe EDGA	0.14	654	0.54
LTSE	0.11	499	0.08
NYSE American	0.11	492	0.19
Texas Stock Exchange LLC	0.01	40	0.00
24X National	0.01	26	0.01

chartexchange.com

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

IRTC Nutrition Facts

0.75 servings per container

Serving size

606.96K

Calories

457.91K

% Day

% Avg

Off Exchange¹ 202K

44.02%

45.74%

Nasdaq GSM 134K

29.29%

28.72%

IEX 40K

8.82%

7.10%

NYSE Arca 36K

7.78%

6.00%

Cboe BZX 17K

3.68%

3.91%

NYSE 8K

1.72%

1.69%

Cboe EDGX 7K

1.47%

1.90%

MEMX 3K

0.71%

0.68%

Cboe BYX 2K

0.53%

1.22%

MIAX Pearl 2K

0.49%

0.41%

NYSE National 2K

0.42%

0.71%

CHX 2K

0.35%

0.12%

Nasdaq PHLX 991

0.22%

0.17%

Nasdaq BX 655

0.14%

0.81%

Cboe EDGA 654

0.14%

0.54%

LTSE 499

0.11%

0.08%

NYSE American 492

0.11%

0.19%

Texas Stock Exchange LLC 40

0.01%

0.00%

24X National 26

0.01%

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

chartexchange.com

IRTC Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 201,551, which is 44.02% of today's total volume.
Today's Lit volume is 256,361, which is 55.98%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 45.74%.
The average Lit volume has been 54.26%.

IRTC Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

NYSE

Cboe EDGX

MEMX

Cboe BYX

MIAX Pearl

NYSE National