Dark

TNDM
Tandem Diabetes Care, Inc.
stock NASDAQ

Market Open

Jun 30, 2026 1:12:29 PM EDT

15.31USD-3.285%(-0.52)458,318

15.30Bid 15.32Ask 0.02Spread

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 12:55:01 PM EDT

[ < ]

Exchange	Day%	Volume	30D%
Off Exchange¹	39.58	173,427	47.63
Nasdaq GSM	27.88	122,172	32.96
IEX	8.31	36,402	5.81
NYSE Arca	7.55	33,091	4.10
Cboe BZX	5.42	23,767	3.19
Cboe EDGX	4.73	20,728	2.27
MEMX	2.24	9,809	1.05
NYSE	1.74	7,644	1.22
Cboe BYX	0.98	4,296	0.46
Cboe EDGA	0.49	2,138	0.44
MIAX Pearl	0.35	1,550	0.29
Nasdaq BX	0.32	1,383	0.18
Nasdaq PHLX	0.23	994	0.10
NYSE National	0.11	501	0.14
NYSE American	0.06	245	0.09
CHX	0.01	22	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

0.16 servings per container

Serving size

2.79M

Calories

438.18K

% Day

% Avg

Off Exchange¹ 173K

39.58%

47.63%

Nasdaq GSM 122K

27.88%

32.96%

IEX 36K

8.31%

5.81%

NYSE Arca 33K

7.55%

4.10%

Cboe BZX 24K

5.42%

3.19%

Cboe EDGX 21K

4.73%

2.27%

MEMX 10K

2.24%

1.05%

NYSE 8K

1.74%

1.22%

Cboe BYX 4K

0.98%

0.46%

Cboe EDGA 2K

0.49%

0.44%

MIAX Pearl 2K

0.35%

0.29%

Nasdaq BX 1K

0.32%

0.18%

Nasdaq PHLX 994

0.23%

0.10%

NYSE National 501

0.11%

0.14%

NYSE American 245

0.06%

0.09%

CHX 22

0.01%

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 173,427, which is 39.58% of today's total volume.
Today's Lit volume is 264,748, which is 60.42%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 47.63%.
The average Lit volume has been 52.37%.

TNDM Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

MEMX

NYSE

Cboe BYX

Cboe EDGA

MIAX Pearl