United Microelectronics Corporation (UMC)

NYSE: UMC · Real-Time Price · USD

19.82

-1.10 (-5.26%)

At close: Oct 16, 2026, 4:00 PM EDT

19.66

-0.16 (-0.81%)

After-hours: Oct 16, 2026, 7:58 PM EDT

United Microelectronics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 16, 2026	20.65	20.65	19.74	19.82	19.82	-5.26%	12,910,672
Oct 15, 2026	20.48	20.97	20.25	20.92	20.92	-2.24%	14,104,144
Oct 14, 2026	21.85	22.05	21.34	21.40	21.40	-4.42%	12,760,225
Oct 13, 2026	21.95	22.40	21.80	22.39	22.39	-0.71%	8,641,650
Oct 12, 2026	22.74	22.74	22.31	22.55	22.55	-1.79%	7,051,875
Oct 9, 2026	23.19	23.28	22.84	22.96	22.96	0.61%	5,186,035
Oct 8, 2026	23.14	23.32	22.51	22.82	22.82	-2.10%	11,893,266
Oct 7, 2026	22.91	23.34	22.85	23.31	23.31	0.52%	7,426,054
Oct 6, 2026	23.54	23.67	23.05	23.19	23.19	-3.05%	14,996,059
Oct 5, 2026	23.82	24.15	23.26	23.92	23.92	-8.95%	31,665,577
Oct 2, 2026	25.67	26.37	25.52	26.27	26.27	4.20%	10,015,232
Oct 1, 2026	24.85	25.34	24.67	25.21	25.21	2.94%	7,412,801
Sep 30, 2026	24.45	24.69	24.35	24.49	24.49	-0.93%	6,823,806
Sep 29, 2026	24.43	25.02	24.11	24.72	24.72	3.65%	10,844,333
Sep 28, 2026	24.08	24.21	23.42	23.85	23.85	-1.89%	7,041,574
Sep 25, 2026	24.25	24.54	24.12	24.31	24.31	0.87%	5,899,383
Sep 24, 2026	24.11	24.35	23.80	24.10	24.10	-2.35%	6,665,704
Sep 23, 2026	25.28	25.38	24.41	24.68	24.68	-4.23%	10,412,814
Sep 22, 2026	25.26	25.80	25.13	25.77	25.77	1.34%	8,333,058
Sep 21, 2026	24.93	25.63	24.64	25.43	25.43	3.33%	10,965,577
Sep 18, 2026	24.45	24.71	23.88	24.61	24.61	0.57%	28,981,372
Sep 17, 2026	23.51	24.55	23.30	24.47	24.47	8.61%	17,699,474
Sep 16, 2026	22.49	22.84	22.25	22.53	22.53	4.26%	10,065,254
Sep 15, 2026	21.89	22.06	21.59	21.61	21.61	-1.32%	8,235,715
Sep 14, 2026	22.08	22.26	21.81	21.90	21.90	-3.27%	16,298,600
Sep 11, 2026	22.41	22.72	22.32	22.64	22.64	2.35%	7,172,008
Sep 10, 2026	21.94	22.28	21.84	22.12	22.12	-2.51%	10,118,888
Sep 9, 2026	22.02	22.70	21.93	22.69	22.69	3.99%	9,794,694
Sep 8, 2026	21.58	22.20	21.58	21.82	21.82	5.06%	11,521,093
Sep 4, 2026	20.48	21.03	20.33	20.77	20.77	4.58%	9,960,542
Sep 3, 2026	19.57	19.95	19.45	19.86	19.86	-0.55%	5,941,307
Sep 2, 2026	19.54	20.14	19.49	19.97	19.97	-2.44%	8,748,368
Sep 1, 2026	20.43	20.84	20.19	20.47	20.47	2.97%	17,836,155
Aug 31, 2026	20.00	20.31	19.74	19.88	19.88	0.45%	8,830,560
Aug 28, 2026	20.65	20.78	19.59	19.79	19.79	3.78%	19,171,757
Aug 27, 2026	18.80	19.08	18.68	19.07	19.07	0.21%	9,116,097
Aug 26, 2026	19.41	19.46	18.84	19.03	19.03	-2.91%	6,089,635
Aug 25, 2026	19.50	20.00	19.42	19.60	19.60	2.89%	10,102,301
Aug 24, 2026	19.50	19.50	18.77	19.05	19.05	3.87%	14,180,653
Aug 21, 2026	18.45	18.61	18.28	18.34	18.34	1.89%	5,928,772
Aug 20, 2026	18.03	18.24	17.88	18.00	18.00	-0.66%	9,860,935
Aug 19, 2026	18.80	18.97	17.97	18.12	18.12	-1.95%	11,825,605
Aug 18, 2026	18.56	18.76	18.14	18.48	18.48	-5.38%	15,922,275
Aug 17, 2026	19.38	19.77	19.27	19.53	19.53	1.98%	7,622,573
Aug 14, 2026	18.94	19.17	18.75	19.15	19.15	-1.19%	7,134,650
Aug 13, 2026	19.25	19.72	19.23	19.38	19.38	0.36%	7,645,172
Aug 12, 2026	19.67	19.67	19.30	19.31	19.31	1.95%	10,475,194
Aug 11, 2026	19.35	19.45	18.91	18.94	18.94	0.80%	7,485,604
Aug 10, 2026	19.27	19.35	18.77	18.79	18.79	0.37%	9,060,318
Aug 7, 2026	18.59	18.82	18.18	18.72	18.72	-2.50%	13,316,627