Tandem Diabetes Care Inc (TNDM) — Price History

As of 2026-08-07 — refreshed nightly from the Closelook data lake. Diary readings, not advice.

Daily prices

Date	Open	High	Low	Close	Chg %	Volume
2026-08-07	17.39	22.65	17.07	22.38	+19.11%	5,434,700
2026-08-06	19.30	19.55	18.50	18.79	-4.08%	3,796,500
2026-08-05	19.25	19.86	19.00	19.59	-3.02%	3,470,800
2026-08-04	19.95	20.81	19.61	20.20	+0.45%	2,822,100
2026-08-03	19.82	20.50	19.73	20.11	+3.13%	3,327,800
2026-07-31	19.10	19.66	18.56	19.50	+2.58%	1,834,000
2026-07-30	18.31	19.04	18.03	19.01	+2.26%	2,056,800
2026-07-29	17.79	18.75	17.42	18.59	+4.67%	1,910,600
2026-07-28	17.17	18.04	17.17	17.76	+3.44%	1,861,000
2026-07-27	17.13	17.27	16.34	17.17	+0.29%	1,577,400
2026-07-24	17.09	17.26	16.49	17.12	+1.30%	1,148,000
2026-07-23	16.93	17.09	16.14	16.90	-0.06%	1,160,000
2026-07-22	17.55	17.55	16.78	16.91	-3.92%	1,533,800
2026-07-21	17.62	18.23	17.23	17.60	-2.76%	1,734,000
2026-07-20	16.95	18.16	16.70	18.10	+5.97%	1,893,900
2026-07-17	16.25	17.09	15.91	17.08	+4.85%	2,100,400
2026-07-16	15.37	16.72	15.34	16.29	+6.61%	1,982,800
2026-07-15	15.22	15.90	15.08	15.28	-1.67%	1,381,900
2026-07-14	15.75	16.03	14.57	15.54	-4.37%	1,882,900
2026-07-13	15.50	16.50	15.40	16.25	+5.45%	1,897,000
2026-07-10	15.46	15.50	15.00	15.41	+0.26%	1,321,200
2026-07-09	15.24	15.68	14.95	15.37	+1.39%	1,398,300
2026-07-08	15.17	15.45	14.89	15.16	-1.75%	1,871,100
2026-07-07	15.65	15.86	14.90	15.43	+0.06%	1,207,500
2026-07-06	15.20	15.59	14.80	15.42	+0.65%	1,322,400
2026-07-02	15.94	16.16	15.22	15.32	-2.73%	1,627,600
2026-07-01	15.10	15.77	15.10	15.75	+4.37%	1,312,700
2026-06-30	15.96	15.96	15.05	15.09	-4.67%	1,145,900
2026-06-29	16.24	16.43	15.58	15.83	-2.52%	1,467,200
2026-06-26	15.69	16.50	15.46	16.24	+3.05%	3,369,100
2026-06-25	15.12	15.98	15.01	15.76	+4.93%	2,304,900
2026-06-24	14.42	15.26	14.41	15.02	+4.23%	2,206,500
2026-06-23	14.17	14.48	13.95	14.41	+0.49%	3,498,100
2026-06-22	15.17	15.34	14.32	14.34	-6.27%	2,451,800
2026-06-18	15.68	15.86	15.08	15.30	-0.65%	2,537,800
2026-06-17	16.44	17.07	15.33	15.40	-7.73%	2,103,000
2026-06-16	16.95	17.20	16.60	16.69	-0.42%	1,905,500
2026-06-15	16.92	17.01	16.30	16.76	+0.96%	1,682,900
2026-06-12	15.56	16.64	15.51	16.60	+5.06%	1,925,500
2026-06-11	15.96	16.06	15.38	15.80	-2.65%	3,631,100
2026-06-10	17.50	17.69	15.93	16.23	-7.84%	2,905,200
2026-06-09	18.64	18.83	17.50	17.61	-4.66%	2,637,900
2026-06-08	19.53	20.18	18.44	18.47	-4.50%	2,995,000
2026-06-05	19.53	20.62	19.31	19.34	-0.57%	2,305,200
2026-06-04	18.52	19.78	18.32	19.45	+7.88%	2,415,500
2026-06-03	18.60	18.80	17.64	18.03	-3.06%	2,362,000
2026-06-02	18.83	19.13	18.33	18.60	-2.72%	1,428,400
2026-06-01	19.47	20.04	17.72	19.12	+11.16%	5,618,600
2026-05-29	16.83	18.28	16.80	17.20	+2.87%	3,009,800
2026-05-28	14.59	16.75	14.42	16.72	+12.82%	4,029,400
2026-05-27	14.69	14.99	14.11	14.82	+1.93%	2,758,300
2026-05-26	15.07	15.35	14.53	14.54	-2.84%	2,845,600
2026-05-22	15.74	15.92	14.94	14.96	-5.04%	1,988,900
2026-05-21	14.94	15.86	14.80	15.76	+4.79%	2,780,200
2026-05-20	13.89	15.10	13.61	15.04	+8.51%	1,715,700
2026-05-19	13.53	14.03	13.47	13.86	+2.44%	1,995,400
2026-05-18	13.15	13.67	12.83	13.53	+5.54%	4,718,300
2026-05-15	13.65	13.68	12.26	12.82	-9.40%	6,098,300
2026-05-14	14.17	14.69	13.96	14.15	+0.28%	2,770,800
2026-05-13	14.41	14.83	13.95	14.11	-3.95%	2,640,200
2026-05-12	14.74	15.34	14.42	14.69	-0.54%	2,367,500
2026-05-11	15.16	15.35	14.18	14.77	-4.59%	3,647,400
2026-05-08	20.00	20.03	15.44	15.48	-16.19%	7,532,600
2026-05-07	18.30	18.90	17.75	18.47	+2.44%	2,628,900
2026-05-06	19.48	19.48	17.93	18.03	-7.16%	3,131,800
2026-05-05	19.90	19.98	18.91	19.42	-2.26%	1,624,600
2026-05-04	19.62	20.44	19.15	19.87	+2.32%	2,072,300
2026-05-01	19.63	20.02	19.18	19.42	-0.54%	1,618,000
2026-04-30	18.32	19.66	18.25	19.52	+7.52%	2,221,400
2026-04-29	18.47	18.47	17.59	18.16	-2.52%	2,166,900
2026-04-28	19.86	20.08	18.57	18.63	-6.00%	1,470,300
2026-04-27	20.20	20.49	19.69	19.82	-2.65%	1,195,300
2026-04-24	20.88	21.11	20.15	20.36	-1.55%	883,300
2026-04-23	20.83	21.62	20.10	20.68	-0.48%	2,210,600
2026-04-22	20.29	20.98	20.00	20.78	+3.74%	1,301,000
2026-04-21	21.35	21.54	19.99	20.03	-5.70%	1,340,700
2026-04-20	20.88	21.86	20.79	21.24	+3.06%	1,718,600
2026-04-17	20.68	21.32	20.36	20.61	+2.59%	1,982,800
2026-04-16	20.60	21.05	20.01	20.09	-2.76%	1,188,300
2026-04-15	21.47	21.96	20.40	20.66	-2.13%	1,340,300
2026-04-14	20.33	21.12	20.05	21.11	+5.02%	2,579,500
2026-04-13	18.91	20.30	18.91	20.10	+4.80%	1,111,000
2026-04-10	19.71	19.82	18.91	19.18	-2.54%	926,400
2026-04-09	19.34	19.84	18.91	19.68	+1.71%	982,500
2026-04-08	19.32	19.77	18.79	19.35	+5.85%	1,919,500
2026-04-07	19.19	19.71	18.11	18.28	-4.64%	1,725,100
2026-04-06	18.46	19.34	18.34	19.17	+3.01%	1,573,100
2026-04-02	18.25	19.09	18.08	18.61	-1.06%	1,034,200
2026-04-01	19.22	19.47	18.29	18.81	-1.88%	1,870,600
2026-03-31	19.62	20.30	18.89	19.17	-2.12%	1,819,700
2026-03-30	21.20	21.35	19.54	19.59	-6.74%	2,053,100
2026-03-27	22.82	22.97	20.93	21.00	-9.95%	2,389,500
2026-03-26	23.81	24.30	22.98	23.32	-3.87%	1,805,600
2026-03-25	24.76	25.05	23.79	24.26	-1.02%	1,212,900
2026-03-24	24.65	24.89	24.03	24.51	-2.31%	2,019,000
2026-03-23	25.87	26.38	24.96	25.09	+1.09%	2,170,200
2026-03-20	24.69	25.01	23.91	24.82	+0.77%	2,424,100
2026-03-19	25.04	25.43	24.18	24.63	+3.27%	2,829,800
2026-03-18	23.91	24.45	23.56	23.85	-0.25%	1,680,500
2026-03-17	23.16	24.79	23.03	23.91	+9.13%	3,611,100
2026-03-16	21.79	22.34	21.42	21.91	+1.48%	1,362,100
2026-03-13	21.03	21.85	20.91	21.59	+3.43%	2,052,100
2026-03-12	21.51	22.06	20.69	20.88	-5.80%	1,419,100
2026-03-11	21.57	22.54	21.14	22.16	+1.28%	1,929,600
2026-03-10	21.24	22.11	20.43	21.88	+4.79%	1,533,314
2026-03-09	20.60	21.28	20.17	20.88	-1.23%	2,097,599
2026-03-06	22.12	22.59	21.02	21.14	-6.58%	1,797,700
2026-03-05	22.81	23.22	22.31	22.63	-3.33%	1,543,000
2026-03-04	23.92	24.48	23.38	23.41	-1.39%	1,762,200
2026-03-03	24.41	24.64	23.61	23.74	-5.91%	2,160,400
2026-03-02	24.88	25.39	24.32	25.23	-0.28%	1,545,600
2026-02-27	26.09	26.09	24.93	25.30	-1.90%	1,815,400
2026-02-26	25.98	26.88	25.57	25.79	-0.85%	2,826,000
2026-02-25	26.91	27.05	25.62	26.01	-3.31%	7,435,100
2026-02-24	25.71	29.65	25.70	26.90	-4.81%	6,671,700
2026-02-23	25.59	28.90	24.77	28.26	+15.02%	6,654,300
2026-02-20	22.75	26.21	22.00	24.57	+32.67%	12,699,000
2026-02-19	18.95	19.09	17.71	18.52	-2.22%	1,992,100
2026-02-18	19.14	19.27	18.45	18.94	+0.53%	1,518,200
2026-02-17	19.00	19.55	18.68	18.84	-0.58%	1,235,000
2026-02-13	18.95	19.50	18.49	18.95	+1.39%	753,131
2026-02-12	19.63	19.81	18.34	18.69	-4.93%	975,431
2026-02-11	19.47	19.92	18.50	19.66	+0.61%	1,296,649
2026-02-10	19.13	20.27	18.90	19.54	+3.44%	1,071,285
2026-02-09	19.34	19.39	18.81	18.89	-1.46%	781,377
2026-02-06	19.04	19.53	18.99	19.17	+1.21%	738,205
2026-02-05	18.80	19.32	18.63	18.94	-0.26%	837,816
2026-02-04	19.44	19.99	18.63	18.99	-2.31%	1,336,958
2026-02-03	20.13	20.88	19.18	19.44	-3.24%	923,225
2026-02-02	19.89	20.95	19.57	20.09	+1.01%	1,137,126
2026-01-30	19.57	20.32	19.04	19.89	+0.66%	1,672,137
2026-01-29	19.05	19.86	18.90	19.76	+3.40%	2,039,071
2026-01-28	20.19	20.20	19.06	19.11	-5.16%	1,128,957
2026-01-27	20.22	20.60	19.75	20.15	-0.25%	1,032,321
2026-01-26	19.80	20.52	19.75	20.20	+1.51%	851,481
2026-01-23	20.45	20.75	19.76	19.90	-3.35%	1,174,919
2026-01-22	20.72	21.64	20.42	20.59	-0.72%	2,014,476
2026-01-21	20.93	21.25	20.34	20.74	+1.22%	1,140,740
2026-01-20	19.97	20.64	19.61	20.49	+1.64%	1,345,561
2026-01-16	20.83	21.98	20.11	20.16	-4.32%	1,377,238
2026-01-15	20.80	21.35	20.53	21.07	+0.96%	1,099,176
2026-01-14	20.75	20.97	20.20	20.87	-0.14%	1,048,098
2026-01-13	21.38	21.43	20.41	20.90	-2.11%	1,640,263
2026-01-12	21.64	22.14	21.15	21.35	-1.61%	1,245,742
2026-01-09	23.03	23.11	20.29	21.70	-3.56%	2,399,863
2026-01-08	22.71	23.35	22.06	22.50	-0.92%	1,211,208
2026-01-07	23.55	23.58	22.71	22.71	-3.53%	920,109
2026-01-06	23.27	23.95	22.99	23.54	+1.68%	1,052,678
2026-01-05	21.50	23.18	21.35	23.15	+7.42%	1,784,407
2026-01-02	22.31	22.45	21.55	21.55	-1.96%	993,154
2025-12-31	22.31	22.45	21.98	21.98	-2.35%	815,090
2025-12-30	22.32	22.55	22.17	22.51	+0.81%	671,854
2025-12-29	22.35	22.68	21.97	22.33	-0.09%	784,819
2025-12-26	22.48	22.48	22.13	22.35	-0.58%	830,112
2025-12-24	22.43	22.79	22.12	22.48	-0.62%	597,738
2025-12-23	23.01	23.28	22.51	22.62	-2.75%	1,133,087
2025-12-22	22.09	24.06	22.05	23.26	+5.39%	1,615,100
2025-12-19	21.80	22.37	21.75	22.07	+1.24%	1,900,149
2025-12-18	22.44	22.73	21.77	21.80	-2.77%	1,142,012
2025-12-17	22.67	23.10	22.30	22.42	-0.80%	1,796,047
2025-12-16	24.46	24.50	22.13	22.60	+2.22%	2,863,097
2025-12-15	21.61	22.16	21.32	22.11	+3.37%	1,803,354
2025-12-12	21.31	21.68	20.56	21.39	+2.00%	1,564,298
2025-12-11	20.78	21.81	20.42	20.97	-2.24%	1,882,943
2025-12-10	20.41	22.09	20.27	21.45	+4.94%	2,690,638
2025-12-09	20.79	21.05	20.30	20.44	-1.45%	1,959,921
2025-12-08	21.01	21.28	20.20	20.74	-0.86%	973,847
2025-12-05	20.74	21.36	20.51	20.92	+1.01%	1,405,601
2025-12-04	19.78	20.77	19.70	20.71	+3.91%	1,211,310
2025-12-03	19.62	20.62	19.47	19.93	+1.58%	1,856,968
2025-12-02	20.73	21.07	19.48	19.62	-4.34%	2,255,303
2025-12-01	19.98	20.53	19.33	20.51	-2.38%	2,123,400
2025-11-28	20.82	21.16	20.24	21.01	+1.35%	942,513
2025-11-26	21.74	21.82	20.61	20.73	-5.08%	1,876,197
2025-11-25	21.50	22.13	21.26	21.84	+1.72%	2,352,762
2025-11-24	21.16	21.77	20.91	21.47	+0.89%	4,184,949
2025-11-21	19.48	21.48	19.35	21.28	+9.13%	3,265,354
2025-11-20	18.97	20.13	18.91	19.50	+4.06%	3,414,710
2025-11-19	18.71	19.07	18.57	18.74	+0.16%	1,990,821
2025-11-18	18.14	19.23	17.86	18.71	+2.02%	5,422,821
2025-11-17	18.61	19.28	18.11	18.34	-1.45%	1,996,358
2025-11-14	17.01	18.70	16.95	18.61	+6.16%	2,460,427
2025-11-13	17.97	18.17	17.41	17.53	-2.93%	2,090,371
2025-11-12	17.39	18.64	17.20	18.06	+3.08%	2,635,069
2025-11-11	16.52	18.40	16.39	17.52	+7.03%	3,513,489
2025-11-10	16.51	16.69	15.50	16.37	+0.68%	3,312,586
2025-11-07	16.00	16.70	15.20	16.26	+21.98%	6,035,292
2025-11-06	14.61	14.82	13.23	13.33	-9.13%	2,814,966
2025-11-05	15.20	15.30	14.45	14.67	-3.55%	1,570,892
2025-11-04	14.23	15.36	14.14	15.21	+5.92%	2,472,862
2025-11-03	14.17	14.42	13.69	14.36	+2.57%	1,860,795
2025-10-31	14.21	14.29	13.66	14.00	-4.04%	1,733,126
2025-10-30	15.05	15.43	14.51	14.59	-3.70%	1,800,800
2025-10-29	15.12	15.40	14.84	15.15	+0.33%	1,359,103
2025-10-28	14.95	15.51	14.72	15.10	+1.07%	1,469,464
2025-10-27	15.00	15.20	14.81	14.94	-0.07%	1,093,055
2025-10-24	14.83	15.36	14.80	14.95	+1.98%	1,343,473
2025-10-23	14.96	15.07	14.63	14.66	-2.01%	1,095,985
2025-10-22	15.28	15.70	14.84	14.96	-2.79%	1,257,572
2025-10-21	15.25	15.92	15.12	15.39	-0.97%	1,828,755
2025-10-20	15.02	15.78	14.92	15.54	+5.07%	1,693,842
2025-10-17	15.02	15.58	14.53	14.79	-3.27%	1,258,998
2025-10-16	14.93	15.53	14.80	15.29	+3.66%	1,968,901
2025-10-15	14.52	15.32	14.45	14.75	+2.57%	2,370,447
2025-10-14	13.69	14.46	13.50	14.38	+3.68%	3,101,183
2025-10-13	14.11	14.35	13.80	13.87	-0.93%	1,227,152
2025-10-10	14.81	14.81	13.49	14.00	-5.53%	1,755,437
2025-10-09	15.34	15.57	14.78	14.82	-3.39%	2,179,414
2025-10-08	14.52	15.34	14.52	15.34	+5.65%	2,202,692
2025-10-07	15.14	15.23	14.49	14.52	-3.26%	1,879,257
2025-10-06	14.90	15.18	14.60	15.01	+2.04%	2,136,363
2025-10-03	13.21	14.85	13.18	14.71	+12.20%	2,237,674
2025-10-02	12.46	13.20	12.38	13.11	+5.64%	2,429,756
2025-10-01	12.18	12.63	12.07	12.41	+2.22%	1,685,467
2025-09-30	11.75	12.19	11.46	12.14	+2.97%	1,561,217
2025-09-29	12.08	12.08	11.68	11.79	-1.75%	1,421,668
2025-09-26	12.00	12.16	11.78	12.00	+0.33%	1,242,642
2025-09-25	12.42	12.55	11.86	11.96	-5.38%	1,960,807
2025-09-24	12.85	13.10	12.55	12.64	-1.02%	1,078,066
2025-09-23	13.23	13.30	12.75	12.77	-2.22%	1,539,921
2025-09-22	12.37	13.18	12.21	13.06	+3.90%	1,805,125
2025-09-19	13.32	13.52	12.55	12.57	-5.06%	2,534,517
2025-09-18	12.41	13.44	12.28	13.24	+8.70%	3,230,760
2025-09-17	12.47	12.64	12.01	12.18	-2.01%	2,395,032
2025-09-16	12.15	12.69	12.07	12.43	+2.81%	1,851,392
2025-09-15	12.48	12.62	12.04	12.09	-1.47%	1,401,061
2025-09-12	12.79	12.89	12.09	12.27	-4.07%	2,114,667
2025-09-11	12.42	13.18	12.39	12.79	+3.40%	1,915,186
2025-09-10	12.45	12.63	12.10	12.37	-1.51%	1,870,523
2025-09-09	12.50	12.74	12.36	12.56	+0.48%	1,290,220
2025-09-08	12.59	12.67	12.20	12.50	-0.64%	1,382,547
2025-09-05	12.45	12.84	12.34	12.58	+1.53%	1,612,194
2025-09-04	12.40	12.50	11.88	12.39	+0.32%	1,362,508
2025-09-03	12.77	13.10	12.16	12.35	-3.36%	1,825,615
2025-09-02	12.53	13.00	12.37	12.78	+2.16%	1,926,269
2025-08-29	11.83	12.53	11.83	12.51	+6.11%	1,441,807
2025-08-28	12.24	12.28	11.70	11.79	-3.76%	2,436,278
2025-08-27	12.24	12.73	12.19	12.25	+0.08%	1,782,923
2025-08-26	12.20	12.31	11.98	12.24	+1.07%	1,613,238
2025-08-25	11.80	12.20	11.66	12.11	+1.51%	2,390,460
2025-08-22	11.18	12.08	11.16	11.93	+7.96%	2,189,029
2025-08-21	10.56	11.17	10.44	11.05	+3.46%	1,737,685
2025-08-20	10.80	10.94	10.25	10.68	-1.93%	2,736,767
2025-08-19	10.98	11.10	10.73	10.89	+0.46%	1,458,150
2025-08-18	10.76	11.29	10.74	10.84	+0.18%	2,340,700
2025-08-15	10.72	11.17	10.70	10.82	+1.50%	2,127,043
2025-08-14	11.17	11.26	10.63	10.66	-4.22%	2,059,504
2025-08-13	11.15	11.82	11.01	11.13	+0.23%	3,029,948
2025-08-12	11.07	11.23	10.64	11.11	+9.79%	3,657,603
2025-08-11	11.11	11.13	10.00	10.12	-9.93%	3,142,466

Most recent 250 sessions, newest first.

Seasonal returns

Best month historically: Dec (+15.76%). Worst month: Jun (-12.87%). Based on 5 years of daily data (2022–2026).

Jan-8.10%
Feb-3.54%
Mar+1.80%
Apr+0.64%
May-1.42%
Jun-12.87%
Jul+12.38%
Aug-3.46%
Sep-9.63%
Oct-5.29%
Nov+7.85%
Dec+15.76%

FAQ · from the current price data · as of 2026-08-07

Quick answers

What is Tandem Diabetes Care Inc's (TNDM) latest close?

22.38 on 2026-08-07, from the Closelook data lake's daily price record.

What is TNDM's 52-week high and low?

29.65 high and 9.98 low over the trailing 52 weeks, as of 2026-08-07.

What is Tandem Diabetes Care Inc's strongest and weakest month historically?

Historically, TNDM's strongest calendar month has been Dec (average +15.76%) and its weakest Jun (average -12.87%), based on 5 years of daily data (2022–2026).

How many years of seasonality does this cover?

5 years (2022–2026), computed from 965 daily bars in the Closelook data lake.