Tandem Diabetes Care, Inc. (TNDM) NASDAQ

Currency In USD

TNDM Historical Return

If you invested $1000 in Tandem Diabetes Care, Inc. (TNDM) 10 years ago, it would be worth $200 as of June 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $150.58, while $1000 invested 1 year ago would be worth $709.2. This corresponds to total returns of -80%, -84.94%, -29.08%, respectively, with annualized returns of -14.86%, -31.51%, -29.08%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

TNDM Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
June 22, 2026	15.17	14.34	14.34	15.34	14.32	2.2M
June 18, 2026	15.68	15.3	15.3	15.86	15.08	2.51M
June 17, 2026	16.44	15.4	15.4	17.07	15.33	2.1M
June 16, 2026	16.95	16.69	16.69	17.2	16.6	1.89M
June 15, 2026	16.92	16.76	16.76	17.01	16.3	1.64M
June 12, 2026	15.56	16.6	16.6	16.64	15.51	1.81M
June 11, 2026	15.96	15.8	15.8	16.06	15.38	3.63M
June 10, 2026	17.5	16.23	16.23	17.69	15.93	2.87M
June 09, 2026	18.64	17.61	17.61	18.83	17.5	2.57M
June 08, 2026	19.53	18.47	18.47	20.18	18.44	2.99M
June 05, 2026	19.53	19.34	19.34	20.62	19.31	2.3M
June 04, 2026	18.52	19.45	19.45	19.78	18.32	2.41M
June 03, 2026	18.6	18.03	18.03	18.8	17.64	2.01M
June 02, 2026	18.83	18.6	18.6	19.13	18.33	1.43M
June 01, 2026	19.47	19.12	19.12	20.04	17.72	5.61M
May 29, 2026	16.83	17.2	17.2	18.28	16.8	3.01M
May 28, 2026	14.59	16.72	16.72	16.75	14.42	4.02M
May 27, 2026	14.69	14.82	14.82	14.99	14.11	2.76M
May 26, 2026	15.07	14.54	14.54	15.35	14.53	2.85M
May 22, 2026	15.74	14.97	14.97	15.92	14.94	1.99M
May 21, 2026	14.94	15.76	15.76	15.86	14.8	2.78M
May 20, 2026	13.89	15.04	15.04	15.1	13.61	1.71M
May 19, 2026	13.53	13.86	13.86	14.03	13.47	1.99M
May 18, 2026	13.15	13.53	13.53	13.67	12.83	4.71M
May 15, 2026	13.65	12.82	12.82	13.65	12.26	6.1M
May 14, 2026	14.17	14.15	14.15	14.69	13.96	2.77M
May 13, 2026	14.51	14.11	14.11	14.83	13.95	2.64M
May 12, 2026	14.74	14.69	14.69	15.34	14.42	2.37M
May 11, 2026	15.16	14.77	14.77	15.35	14.18	3.36M
May 08, 2026	20	15.48	15.48	20.03	15.44	7.53M
May 07, 2026	18.3	18.47	18.47	18.9	17.75	2.54M
May 06, 2026	19.48	18.03	18.03	19.49	17.93	3.09M
May 05, 2026	19.9	19.42	19.42	19.98	18.91	1.62M
May 04, 2026	19.62	19.87	19.87	20.44	19.15	2.07M
May 01, 2026	19.63	19.42	19.42	20.02	19.18	1.62M
April 30, 2026	18.32	19.52	19.52	19.67	18.25	2.22M
April 29, 2026	18.47	18.16	18.16	18.47	17.59	2.17M
April 28, 2026	19.86	18.63	18.63	20.08	18.58	1.46M
April 27, 2026	20.2	19.82	19.82	20.49	19.69	1.19M
April 24, 2026	20.88	20.36	20.36	21.11	20.15	882,958
April 23, 2026	20.83	20.68	20.68	21.62	20.1	2.21M
April 22, 2026	20.29	20.78	20.78	20.98	20	1.3M
April 21, 2026	21.35	20.03	20.03	21.54	19.99	1.34M
April 20, 2026	20.88	21.24	21.24	21.86	20.79	1.72M
April 17, 2026	20.68	20.61	20.61	21.32	20.36	1.98M
April 16, 2026	20.6	20.09	20.09	21.05	20.01	1.19M
April 15, 2026	21.47	20.66	20.66	21.96	20.4	1.34M
April 14, 2026	20.33	21.11	21.11	21.12	20.05	2.58M
April 13, 2026	18.91	20.1	20.1	20.3	18.91	1.11M
April 10, 2026	19.71	19.18	19.18	19.82	18.92	924,891
April 09, 2026	19.34	19.68	19.68	19.84	18.91	982,518
April 08, 2026	19.32	19.35	19.35	19.77	18.79	1.92M
April 07, 2026	19.19	18.28	18.28	19.71	18.11	1.73M
April 06, 2026	18.46	19.17	19.17	19.34	18.35	1.57M
April 02, 2026	18.25	18.61	18.61	19.1	18.08	1.01M
April 01, 2026	19.22	18.81	18.81	19.47	18.29	1.86M
March 31, 2026	19.62	19.17	19.17	20.3	18.89	1.82M
March 30, 2026	21.2	19.59	19.59	21.35	19.54	2.05M
March 27, 2026	22.82	21	21	22.97	20.94	2.39M
March 26, 2026	23.81	23.32	23.32	24.3	22.98	1.81M