United Microelectronics (NEW) (UMC) Options Chain

NYSE: UMCTechnologySemiconductorsUSD

22.82-0.49 (-2.10%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

After hours: 22.80 -0.09%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $22.82
Put/call ratio (OI): 0.32
Put/call ratio (volume): 0.10
ATM implied volatility: 64.3%
Expected move: ±$2.17
Open interest (C / P): 103.73K / 33.62K

UMC options summary

The UMC options chain for the October 16, 2026 expiration lists 40 call and 28 put contracts, with 8 days until expiration. Open interest stands at 103,731 calls and 33,619 puts, a put/call ratio of 0.32, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $23.00 strike is 64.3%, which implies the market expects a move of about ±$2.17 (9.5%) in United Microelectronics (NEW) stock by expiration.

The most open interest sits at the $26.00 call (29.13K contracts) and the $22.00 put (5.41K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

UMC options chain · October 16, 2026

UMC calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
0	68	—	21.70	16.00	19.00	2.00	—	—	—	—	—	—
0	64	—	20.92	15.00	18.00	3.00	—	—	—	—	—	—
0	57	—	19.60	14.00	17.00	4.00	—	—	—	—	—	—
0	2	—	18.89	12.40	16.00	5.00	0.00	1.95	0.05	916.0%	14	21
0	10	—	17.20	11.40	15.00	6.00	0.00	0.00	0.20	50.0%	—	0
9	9	—	16.70	10.50	14.00	7.00	0.00	0.30	0.09	440.6%	2	7
500	1	—	16.00	10.10	13.00	8.00	0.00	0.30	0.05	393.8%	4	257
400	400	—	16.20	9.10	12.10	9.00	0.00	0.20	0.10	327.3%	1	288
515	10	379.3%	13.22	11.50	14.80	10.00	0.00	0.00	0.10	50.0%	1	0
0	1	—	7.25	0.00	0.00	11.00	0.00	0.20	0.10	263.3%	20	349
33	11	575.8%	13.25	8.70	12.80	12.00	0.00	0.35	0.05	263.3%	1	779
3,588	2	170.3%	11.63	8.50	11.20	13.00	0.00	0.40	0.05	242.6%	4	604
1,759	1	210.6%	11.93	8.40	9.60	14.00	0.00	0.15	0.03	175.8%	10	2,744
922	9	197.3%	8.24	7.40	8.70	15.00	0.00	0.35	0.02	184.4%	1	1,846
1,495	1	172.7%	7.30	6.50	7.60	16.00	0.00	0.05	0.03	110.9%	3	3,166
95	1	224.8%	5.90	4.00	6.60	17.00	0.00	0.05	0.05	93.8%	2	4,049
2,861	10	97.3%	5.16	4.50	5.30	18.00	0.00	0.20	0.05	102.3%	1	2,055
298	1	78.9%	4.60	3.50	4.30	19.00	0.00	0.20	0.05	83.2%	1	3,907
2,193	1	73.4%	3.02	2.55	3.40	20.00	0.00	0.20	0.05	64.8%	2	2,015
1,546	1	61.7%	2.05	1.70	2.40	21.00	0.10	0.65	0.15	76.0%	13	1,863
2,154	7	56.9%	1.07	1.10	1.45	22.00	0.30	0.45	0.36	50.7%	32	5,407
UMC $22.82
27,203	580	58.4%	0.65	0.50	0.75	23.00	0.45	1.10	0.90	70.2%	26	1,176
3,161	52	55.1%	0.35	0.25	0.45	24.00	1.30	1.65	1.70	50.5%	3	1,506
17,546	272	54.5%	0.15	0.10	0.20	25.00	2.25	2.55	1.80	62.3%	1	781
29,127	429	57.8%	0.10	0.00	0.15	26.00	2.80	3.60	2.65	98.6%	1	270
861	1	64.5%	0.05	0.00	0.10	27.00	3.80	4.60	2.77	54.7%	7	315
1,198	11	66.4%	0.03	0.00	0.05	28.00	8.30	10.10	7.20	401.9%	44	140
920	51	75.8%	0.06	0.00	0.05	29.00	0.00	0.00	10.24	—	10	0
2,613	5	84.4%	0.03	0.00	0.05	30.00	5.20	9.30	6.05	100.8%	1	65
310	1	159.0%	0.05	0.00	0.70	31.00	11.20	13.20	8.30	451.8%	9	9
148	1	155.7%	0.10	0.00	0.50	32.00	12.20	14.00	9.60	459.6%	4	0
53	1	180.5%	0.05	0.00	0.70	33.00	—	—	—	—	—	—
117	3	156.6%	0.13	0.00	0.30	34.00	—	—	—	—	—	—
1,115	1	164.8%	0.01	0.00	0.30	35.00	—	—	—	—	—	—
178	1	193.0%	0.05	0.00	0.50	36.00	—	—	—	—	—	—
12	2	217.8%	0.08	0.00	0.70	37.00	—	—	—	—	—	—
50	2	209.4%	0.10	0.00	0.50	38.00	—	—	—	—	—	—
22	2	196.1%	0.10	0.00	0.30	39.00	—	—	—	—	—	—
149	2	203.1%	0.10	0.00	0.30	40.00	—	—	—	—	—	—
580	1	209.8%	0.16	0.00	0.30	41.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the UMC put/call ratio?

For the October 16, 2026 expiration, the UMC put/call ratio based on open interest is 0.32 (33,619 puts vs 103,731 calls), and 0.10 based on today's volume. A ratio above 1 means more puts than calls.

What is UMC's implied volatility?

At-the-money implied volatility for UMC options expiring October 16, 2026 is about 64.3%, an annualized estimate of how much the market expects United Microelectronics (NEW) stock to move.

How many UMC option expiration dates are there?

UMC has 6 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.