United Microelectronics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 28, 2025	46.00	46.25	45.80	46.00	46.00	0.88%	44,814,283
Oct 27, 2025	46.05	46.45	45.60	45.60	45.60	0.44%	44,626,139
Oct 23, 2025	45.50	45.50	45.05	45.40	45.40	-0.22%	15,649,535
Oct 22, 2025	45.40	45.70	45.10	45.50	45.50	0.11%	23,785,286
Oct 21, 2025	46.20	46.30	45.45	45.45	45.45	-1.41%	26,102,343
Oct 20, 2025	46.05	46.25	45.85	46.10	46.10	0.77%	33,201,429
Oct 17, 2025	45.30	45.90	45.10	45.75	45.75	1.89%	45,984,311
Oct 16, 2025	44.90	45.30	44.65	44.90	44.90	0.90%	31,651,600
Oct 15, 2025	45.00	45.10	44.30	44.50	44.50	-0.78%	35,815,362
Oct 14, 2025	46.00	46.35	44.85	44.85	44.85	-1.32%	46,680,706
Oct 13, 2025	44.50	45.50	44.25	45.45	45.45	-0.44%	59,654,217
Oct 9, 2025	45.60	46.30	45.50	45.65	45.65	1.56%	72,308,338
Oct 8, 2025	44.50	44.95	44.30	44.95	44.95	1.47%	40,094,960
Oct 7, 2025	43.85	44.35	43.50	44.30	44.30	1.03%	29,966,778
Oct 3, 2025	43.35	43.85	43.20	43.85	43.85	0.11%	41,001,974
Oct 2, 2025	44.45	44.55	43.35	43.80	43.80	-1.02%	62,306,680
Oct 1, 2025	45.80	45.90	44.00	44.25	44.25	-2.85%	80,627,702
Sep 30, 2025	45.55	47.30	45.25	45.55	45.55	1.56%	132,859,067
Sep 29, 2025	44.85	44.85	44.85	44.85	44.85	-	-
Sep 26, 2025	44.85	45.30	44.15	44.85	44.85	1.24%	47,727,071
Sep 25, 2025	44.85	45.25	44.05	44.30	44.30	-1.23%	59,196,649
Sep 24, 2025	44.40	45.30	44.10	44.85	44.85	2.16%	86,632,497
Sep 23, 2025	43.55	44.45	43.35	43.90	43.90	1.97%	84,792,615
Sep 22, 2025	43.90	43.95	43.00	43.05	43.05	-0.46%	65,240,659
Sep 19, 2025	42.45	43.40	42.20	43.25	43.25	3.47%	108,454,279
Sep 18, 2025	41.70	42.10	41.65	41.80	41.80	0.84%	38,832,912
Sep 17, 2025	41.10	41.50	41.10	41.45	41.45	0.97%	22,065,704
Sep 16, 2025	41.20	41.50	41.05	41.05	41.05	-0.12%	20,434,106
Sep 15, 2025	41.20	41.45	41.10	41.10	41.10	-0.12%	27,497,722
Sep 12, 2025	41.00	41.30	40.90	41.15	41.15	0.61%	25,468,461
Sep 11, 2025	41.25	41.40	40.90	40.90	40.90	-0.85%	22,457,572
Sep 10, 2025	41.45	41.50	41.10	41.25	41.25	-0.48%	22,731,249
Sep 9, 2025	41.60	41.75	41.40	41.45	41.45	-0.36%	17,679,774
Sep 8, 2025	41.60	41.65	41.25	41.60	41.60	0.97%	16,976,897
Sep 5, 2025	41.85	41.90	41.05	41.20	41.20	-1.90%	36,623,180
Sep 4, 2025	41.15	42.70	41.15	42.00	42.00	2.69%	68,277,384
Sep 3, 2025	40.95	40.95	40.70	40.90	40.90	-	11,884,531
Sep 2, 2025	40.90	41.00	40.65	40.90	40.90	0.37%	20,463,038
Sep 1, 2025	40.60	40.80	40.40	40.75	40.75	0.62%	20,893,623
Aug 29, 2025	40.85	40.90	40.45	40.50	40.50	-0.25%	23,933,820
Aug 28, 2025	40.95	41.20	40.60	40.60	40.60	-0.85%	24,015,812
Aug 27, 2025	41.20	41.30	40.90	40.95	40.95	-2.03%	30,468,264
Aug 26, 2025	40.50	41.80	40.35	41.80	41.80	3.08%	64,250,411
Aug 25, 2025	40.85	40.90	40.55	40.55	40.55	-0.12%	21,545,532
Aug 22, 2025	41.15	41.20	40.60	40.60	40.60	-1.93%	24,838,989
Aug 21, 2025	42.00	42.05	41.40	41.40	41.40	-1.19%	46,331,107
Aug 20, 2025	41.50	42.50	41.50	41.90	41.90	2.07%	109,831,366
Aug 19, 2025	40.30	41.05	40.10	41.05	41.05	1.61%	32,392,374
Aug 18, 2025	40.90	40.90	40.20	40.40	40.40	-1.94%	50,965,480
Aug 15, 2025	41.10	41.60	41.00	41.20	41.20	0.98%	33,183,504