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TNDM
Tandem Diabetes Care, Inc.
stock NASDAQ

At Close

Sep 30, 2026 3:59:53 PM EDT

16.31USD-1.569%(-0.26)2,198,738

14.06Bid 18.72Ask 4.66Spread

Pre-market

Sep 30, 2026 9:28:30 AM EDT

16.62USD+0.302%(+0.05)13,572

After-hours

Sep 29, 2026 4:36:30 PM EDT

16.60USD+0.121%(+0.02)0

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Oct 16, 2026 Nov 20, 2026 Jan 15, 2027 Feb 19, 2027 May 21, 2027

ITM/OTM for Nov 20, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
380	2,110	131	1,206

TNDM Nov 20, 2026 Exp. - Volume by Strike

Puts

Calls

TNDM Nov 20, 2026 Exp. - Open Interest by Strike

Puts

Calls

TNDM Nov 20, 2026 Exp. - Max Pain @ $16.00

Puts

Calls

TNDM Nov 20, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
40 C	0	0%	0			TNDM261120C00040000
39 C	0	0%	0			TNDM261120C00039000
38 C	0	0%	0			TNDM261120C00038000
37 C	0.55	0%	1	1	08-13	TNDM261120C00037000
36 C	0.62	+16.98%	1	6	08-20	TNDM261120C00036000
35 C	0.15	-40.00%	64	84	09-10	TNDM261120C00035000
34 C	0.77	-3.75%	3	4	08-20	TNDM261120C00034000
33 C	0.50	-41.86%	10	25	08-24	TNDM261120C00033000
32 C	0.80	-20.79%	1	19	08-24	TNDM261120C00032000
31 C	0.85	-77.45%	1	2	08-24	TNDM261120C00031000
30 C	0.15	-75.00%	1	103	09-18	TNDM261120C00030000
29 C	1.05	0%	1	1	06-16	TNDM261120C00029000
28 C	1.17	+17.00%	1	32	09-01	TNDM261120C00028000
27 C	1.60	-31.91%	8	16	08-24	TNDM261120C00027000
26 C	0.30	-25.00%	4	41	09-18	TNDM261120C00026000
25 C	2.82	+41.00%	5	36	08-12	TNDM261120C00025000
24 C	2.55	-17.74%	4	5	08-17	TNDM261120C00024000
23 C	0.24	-64.71%	2	53	09-24	TNDM261120C00023000
22 C	0.55	-85.49%	3	72	09-29	TNDM261120C00022000
21 C	1.15	-74.10%	12	45	09-16	TNDM261120C00021000
20 C	0.78	-33.90%	64	285	09-29	TNDM261120C00020000
19 C	1.13	-24.67%	210	1,058	09-28	TNDM261120C00019000
18 C	1.02	-40.35%	62	199	09-24	TNDM261120C00018000
17 C	1.88	+56.67%	4	23	09-28	TNDM261120C00017000
16 C	2.18	+26.01%	6	339	09-28	TNDM261120C00016000
15 C	2.00	-69.23%	4	9	09-28	TNDM261120C00015000
14 C	2.70	-75.23%	11	15	09-24	TNDM261120C00014000
13 C	3.45	-53.06%	2	8	09-24	TNDM261120C00013000
12 C	3.90	+22.64%	2	4	05-18	TNDM261120C00012000
11 C	6.50	+30.00%	5	5	07-13	TNDM261120C00011000
10 C	0	0%	0			TNDM261120C00010000
9 C	0	0%	0			TNDM261120C00009000
8 C	0	0%	0			TNDM261120C00008000
7 C	0	0%	0			TNDM261120C00007000
6 C	0	0%	0			TNDM261120C00006000
5 C	0	0%	0			TNDM261120C00005000
4 C	0	0%	0			TNDM261120C00004000
3 C	0	0%	0			TNDM261120C00003000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
40 P	0	0%	0			TNDM261120P00040000
39 P	0	0%	0			TNDM261120P00039000
38 P	0	0%	0			TNDM261120P00038000
37 P	0	0%	0			TNDM261120P00037000
36 P	0	0%	0			TNDM261120P00036000
35 P	0	0%	0			TNDM261120P00035000
34 P	0	0%	0			TNDM261120P00034000
33 P	0	0%	0			TNDM261120P00033000
32 P	0	0%	0			TNDM261120P00032000
31 P	0	0%	0			TNDM261120P00031000
30 P	0	0%	0			TNDM261120P00030000
29 P	7.40	+10.12%	2	2	08-21	TNDM261120P00029000
28 P	0	0%	0			TNDM261120P00028000
27 P	0	0%	0			TNDM261120P00027000
26 P	0	0%	0			TNDM261120P00026000
25 P	0	0%	0			TNDM261120P00025000
24 P	0	0%	0			TNDM261120P00024000
23 P	3.30	-50.75%	10	11	08-24	TNDM261120P00023000
22 P	6.50	+96.97%	1	2	09-25	TNDM261120P00022000
21 P	5.53	0%	2	2	05-06	TNDM261120P00021000
20 P	2.55	+41.67%	5	5	09-03	TNDM261120P00020000
19 P	2.15	-32.81%	11	28	09-09	TNDM261120P00019000
18 P	1.70	-35.85%	42	12	08-07	TNDM261120P00018000
17 P	2.55	+45.71%	5	69	09-23	TNDM261120P00017000
16 P	1.95	-2.50%	50	86	09-28	TNDM261120P00016000
15 P	1.30	-23.53%	2	650	09-28	TNDM261120P00015000
14 P	0.40	0.00%	3	17	08-31	TNDM261120P00014000
13 P	0.50	-57.26%	10	12	09-16	TNDM261120P00013000
12 P	0.65	+38.30%	1	404	09-25	TNDM261120P00012000
11 P	0.80	-49.04%	36	4	07-17	TNDM261120P00011000
10 P	0.50	-23.08%	40	9	07-17	TNDM261120P00010000
9 P	0.27	-28.95%	50	10	07-24	TNDM261120P00009000
8 P	0.36	-5.26%	1	13	09-25	TNDM261120P00008000
7 P	0.20	-28.57%	50	1	07-08	TNDM261120P00007000
6 P	0	0%	0			TNDM261120P00006000
5 P	0	0%	0			TNDM261120P00005000
4 P	0	0%	0			TNDM261120P00004000
3 P	0	0%	0			TNDM261120P00003000

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