Dark

TNDM
Tandem Diabetes Care, Inc.
stock NASDAQ

Market Open

Jun 30, 2026 12:08:54 PM EDT

15.25USD-3.664%(-0.58)400,695

13.33Bid 15.27Ask 1.94Spread

Pre-market

Jun 30, 2026 9:18:30 AM EDT

15.92USD+0.569%(+0.09)26,036

After-hours

Jun 29, 2026 4:54:30 PM EDT

15.63USD-1.139%(-0.18)0

OverviewOptionsHistoricalExchange VolumeShortsMore

TNDM Volume Jun 30, 2026 11:45:01 AM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	40.64	129,629	47.65
Nasdaq GSM	24.43	77,920	32.96
IEX	8.55	27,285	5.81
NYSE Arca	8.04	25,649	4.10
Cboe BZX	5.45	17,387	3.18
Cboe EDGX	5.43	17,312	2.27
MEMX	2.71	8,655	1.05
NYSE	1.70	5,430	1.22
Cboe BYX	1.19	3,807	0.46
Cboe EDGA	0.66	2,110	0.45
MIAX Pearl	0.45	1,447	0.29
Nasdaq BX	0.32	1,022	0.18
Nasdaq PHLX	0.28	909	0.10
NYSE National	0.11	341	0.14
NYSE American	0.01	31	0.09
CHX	0.00	8	0.05
LTSE	0.00	6	0.00
24X National	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.

TNDM Nutrition Facts

0.11 servings per container

Serving size

2.79M

Calories

318.95K

% Day

% Avg

Off Exchange¹ 130K

40.64%

47.65%

Nasdaq GSM 78K

24.43%

32.96%

IEX 27K

8.55%

5.81%

NYSE Arca 26K

8.04%

4.10%

Cboe BZX 17K

5.45%

3.18%

Cboe EDGX 17K

5.43%

2.27%

MEMX 9K

2.71%

1.05%

NYSE 5K

1.70%

1.22%

Cboe BYX 4K

1.19%

0.46%

Cboe EDGA 2K

0.66%

0.45%

MIAX Pearl 1K

0.45%

0.29%

Nasdaq BX 1K

0.32%

0.18%

Nasdaq PHLX 909

0.28%

0.10%

NYSE National 341

0.11%

0.14%

NYSE American 31

0.01%

0.09%

CHX 8

0.00%

0.05%

LTSE 6

0.00%

24X National 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

TNDM Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 129,629, which is 40.64% of today's total volume.
Today's Lit volume is 189,319, which is 59.36%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 47.65%.
The average Lit volume has been 52.35%.

TNDM Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

MEMX

NYSE

Cboe BYX

Cboe EDGA

MIAX Pearl