UMC
United Microelectronic Corp.
stockNYSEADR

At CloseOct 5, 2026 3:59:58 PM EDT

23.97USD-8.755%(-2.30)31,790,780

Pre-marketOct 5, 2026 9:29:30 AM EDT

23.91USD-8.977%(-2.36)

After-hoursOct 5, 2026 4:58:30 PM EDT

24.01USD+0.174%(+0.04)

UMC Option Chain

Expiration Dates

Open interestCallsITM 392OTM 2,467PutsITM 453OTM 1,082P/C 0.54

CallsPuts

CallsPuts

CallsPuts

Columns

Contract

Calls

Strike	Price	Change	Vol	OI	Last
35 C	0.43	+30.30%	1	38	10-02
33 C	0.72	+80.00%	48	47	10-02
32 C	0.65	+62.50%	35	44	09-29
31 C	1.04	+22.35%	27	65	10-02
30 C	1.30	+30.00%	89	749	10-02
29 C	1.51	+24.79%	9	88	10-02
28 C	1.84	+28.67%	4	117	10-02
27 C	2.22	+30.59%	20	218	10-02
26 C	2.68	+24.65%	8	344	10-02
25 C	3.20	+22.61%	395	757	10-02
24 C	3.75	+23.36%	3	281	10-02
23 C	4.40	+30.18%	39	67	10-02
22 C	3.90	-5.57%	2	18	10-01
21 C	4.75	+28.38%	4	5	09-29
20 C	6.30	+3.45%	1	5	09-22
19 C	—	—	0	0	—
18 C	7.79	0.00%	12	11	09-21
17 C	8.30	0.00%	5	5	09-17
16 C	—	—	0	0	—
15 C	—	—	0	0	—
14 C	—	—	0	0	—

Puts

Strike	Price	Change	Vol	OI	Last
35 P	—	—	0	0	—
33 P	—	—	0	0	—
32 P	—	—	0	0	—
31 P	—	—	0	0	—
30 P	—	—	0	0	—
29 P	—	—	0	0	—
28 P	3.60	0.00%	2	2	10-02
27 P	2.95	-22.16%	11	83	10-02
26 P	2.35	-24.19%	2	6	10-02
25 P	1.82	-24.17%	61	362	10-02
24 P	1.40	-23.91%	41	350	10-02
23 P	1.05	-22.79%	1	243	10-02
22 P	0.78	-22.00%	9	287	10-02
21 P	0.65	-13.33%	1	83	10-02
20 P	0.34	-34.62%	13	43	10-02
19 P	0.40	0.00%	17	43	10-01
18 P	0.15	-59.46%	9	28	10-02
17 P	0.22	0.00%	1	1	09-25
16 P	0.15	0.00%	1	2	09-25
15 P	0.13	0.00%	1	1	09-18
14 P	0.08	0.00%	1	1	09-23