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TNDM
Tandem Diabetes Care, Inc.
stock NASDAQ

Market Open

Jun 30, 2026 1:09:54 PM EDT

15.30USD-3.348%(-0.53)456,260

15.29Bid 15.32Ask 0.03Spread

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

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Jul 17, 2026 Aug 21, 2026 Nov 20, 2026 Jan 15, 2027 Feb 19, 2027

ITM/OTM for Aug 21, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
152	1,787	370	288

TNDM Aug 21, 2026 Exp. - Volume by Strike

Puts

Calls

TNDM Aug 21, 2026 Exp. - Open Interest by Strike

Puts

Calls

TNDM Aug 21, 2026 Exp. - Max Pain @ $16.00

Puts

Calls

TNDM Aug 21, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
43 C	0	0%	0			TNDM260821C00043000
42 C	0.05	-92.31%	1	15	05-22	TNDM260821C00042000
41 C	0.75	-16.67%	1	2	03-17	TNDM260821C00041000
40 C	0.05	-98.00%	1	1	05-18	TNDM260821C00040000
39 C	1.40	0%	1	1	03-04	TNDM260821C00039000
38 C	1.29	0%	6	6	03-23	TNDM260821C00038000
37 C	0.64	+82.86%	3	3	06-01	TNDM260821C00037000
36 C	0.64	+82.86%	1	4	06-01	TNDM260821C00036000
35 C	0.70	+16.67%	10	26	04-15	TNDM260821C00035000
34 C	0.05	-90.00%	5	9	06-24	TNDM260821C00034000
33 C	0.62	-4.62%	1	7	06-05	TNDM260821C00033000
32 C	0.55	-21.43%	1	13	06-05	TNDM260821C00032000
31 C	0.92	0%	2	0	04-21	TNDM260821C00031000
30 C	0.65	-13.33%	1	107	06-02	TNDM260821C00030000
29 C	0.82	-34.40%	10	102	05-06	TNDM260821C00029000
28 C	0.25	-86.49%	3	53	05-21	TNDM260821C00028000
27 C	1.78	-11.44%	30	70	04-16	TNDM260821C00027000
26 C	0.80	-25.23%	100	137	06-11	TNDM260821C00026000
25 C	0.26	-53.57%	15	38	06-22	TNDM260821C00025000
24 C	0.95	+46.15%	1	41	05-29	TNDM260821C00024000
23 C	1.90	+192.31%	707	708	06-05	TNDM260821C00023000
22 C	0.69	-58.18%	11	28	06-26	TNDM260821C00022000
21 C	1.20	+9.09%	5	32	06-12	TNDM260821C00021000
20 C	1.05	-41.67%	11	57	06-26	TNDM260821C00020000
19 C	1.30	-10.34%	28	37	06-17	TNDM260821C00019000
18 C	1.30	-13.33%	1	40	06-29	TNDM260821C00018000
17 C	1.20	+9.09%	1	20	06-24	TNDM260821C00017000
16 C	2.33	-0.85%	203	230	06-29	TNDM260821C00016000
15 C	3.00	+35.14%	9	51	06-26	TNDM260821C00015000
14 C	3.10	+47.62%	10	19	06-29	TNDM260821C00014000
13 C	6.85	+169.69%	4	10	06-01	TNDM260821C00013000
12 C	0	0%	0			TNDM260821C00012000
11 C	4.50	+45.16%	48	46	05-20	TNDM260821C00011000
10 C	0	0%	0			TNDM260821C00010000
9 C	9.70	0%	26	25	06-08	TNDM260821C00009000
8 C	0	0%	0			TNDM260821C00008000
7 C	0	0%	0			TNDM260821C00007000
6 C	0	0%	0			TNDM260821C00006000
5 C	10.90	0%	2	1	06-25	TNDM260821C00005000
4 C	0	0%	0			TNDM260821C00004000
3 C	0	0%	0			TNDM260821C00003000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
43 P	0	0%	0			TNDM260821P00043000
42 P	0	0%	0			TNDM260821P00042000
41 P	0	0%	0			TNDM260821P00041000
40 P	0	0%	0			TNDM260821P00040000
39 P	0	0%	0			TNDM260821P00039000
38 P	0	0%	0			TNDM260821P00038000
37 P	0	0%	0			TNDM260821P00037000
36 P	0	0%	0			TNDM260821P00036000
35 P	19.30	+67.83%	4	2	06-29	TNDM260821P00035000
34 P	18.20	0%	2	1	06-29	TNDM260821P00034000
33 P	0	0%	0			TNDM260821P00033000
32 P	0	0%	0			TNDM260821P00032000
31 P	14.60	0%	3	2	06-26	TNDM260821P00031000
30 P	11.20	+14.40%	1	2	03-31	TNDM260821P00030000
29 P	9.30	0%	14	14	06-05	TNDM260821P00029000
28 P	5.59	0%	15	15	02-24	TNDM260821P00028000
27 P	0	0%	0			TNDM260821P00027000
26 P	7.60	0%	1	0	01-16	TNDM260821P00026000
25 P	9.00	-10.00%	10	72	06-26	TNDM260821P00025000
24 P	10.95	+73.81%	1	1	05-18	TNDM260821P00024000
23 P	8.00	+86.05%	1	8	05-26	TNDM260821P00023000
22 P	4.14	-28.00%	1	1	02-20	TNDM260821P00022000
21 P	3.50	-57.06%	3	40	06-05	TNDM260821P00021000
20 P	4.86	+73.57%	1	52	06-17	TNDM260821P00020000
19 P	3.10	-48.25%	3	15	06-02	TNDM260821P00019000
18 P	3.46	+33.08%	100	127	06-25	TNDM260821P00018000
17 P	2.40	-18.92%	3	9	06-17	TNDM260821P00017000
16 P	2.35	+38.24%	4	9	06-10	TNDM260821P00016000
15 P	1.80	-16.28%	3	31	06-25	TNDM260821P00015000
14 P	1.00	0.00%	2	5	06-16	TNDM260821P00014000
13 P	1.08	+35.00%	2	9	06-18	TNDM260821P00013000
12 P	0.80	+19.40%	1	1	06-18	TNDM260821P00012000
11 P	0.72	+44.00%	5	211	06-01	TNDM260821P00011000
10 P	0.50	+42.86%	5	30	06-22	TNDM260821P00010000
9 P	0	0%	0			TNDM260821P00009000
8 P	0	0%	0			TNDM260821P00008000
7 P	0	0%	0			TNDM260821P00007000
6 P	0	0%	0			TNDM260821P00006000
5 P	0.10	0%	1	1	03-31	TNDM260821P00005000
4 P	0	0%	0			TNDM260821P00004000
3 P	0	0%	0			TNDM260821P00003000