United Microelectronics UMC
$13.85 +$0.47 (+3.51%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $13.98 +0.94%
Open$14.39
Prev close$13.38
Day range$13.65 – $14.54
Volume16.78M
Market cap$34.87B
P/E (TTM)13.7
Dividend yield2.94%
Average implied volatility across the listed chain right now: 144%. Implied volatility measures how big a price swing the options market is pricing in — there is no fixed “normal” level, it varies a lot by stock.
Open interest by strike
Nearest listed expiry only. Calls above the line, puts below — clusters mark strikes where the market has built up the most open positions.
Implied volatility by strike
The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.
Calls
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $14.00 | $0.70 | $0.60/$1.05 | 29 | 101 | 87% |
| 20 Nov 2026 | $13.00 | $1.27 | $0.80/$1.80 | 5 | 206 | 80% |
| 20 Nov 2026 | $15.00 | $0.36 | $0.30/$0.40 | 24 | 278 | 75% |
| 20 Nov 2026 | $12.00 | $1.70 | $1.90/$3.70 | 0 | 0 | 181% |
| 20 Nov 2026 | $16.00 | $0.15 | $0.10/$0.20 | 48 | 8 | 73% |
| 20 Nov 2026 | $11.00 | $2.55 | $2.75/$4.20 | 0 | 0 | 184% |
| 20 Nov 2026 | $17.00 | $0.06 | $0.05/$0.15 | 16 | 139 | 83% |
| 20 Nov 2026 | $10.00 | $3.80 | $3.50/$5.40 | 6 | 0 | 225% |
| 20 Nov 2026 | $18.00 | $0.05 | $0.00/$0.50 | 4 | 865 | 85% |
| 20 Nov 2026 | $9.00 | $0.00 | $4.30/$6.40 | 0 | 0 | 253% |
| 20 Nov 2026 | $19.00 | $0.05 | $0.00/$0.10 | 1 | 220 | 99% |
| 20 Nov 2026 | $20.00 | $0.03 | $0.00/$0.10 | 0 | 2,512 | 104% |
| 20 Nov 2026 | $21.00 | $0.02 | $0.00/$0.15 | 0 | 507 | 105% |
| 20 Nov 2026 | $22.00 | $0.13 | $0.00/$0.10 | 1 | 280 | 160% |
| 20 Nov 2026 | $23.00 | $0.03 | $0.00/$0.10 | 2 | 28,432 | 132% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $14.00 | $0.83 | $0.80/$0.95 | 41 | 35 | 79% |
| 20 Nov 2026 | $13.00 | $0.46 | $0.20/$0.50 | 56 | 37 | 71% |
| 20 Nov 2026 | $15.00 | $1.50 | $1.40/$1.80 | 63 | 867 | 88% |
| 20 Nov 2026 | $12.00 | $0.25 | $0.15/$0.30 | 54 | 7 | 90% |
| 20 Nov 2026 | $16.00 | $2.52 | $2.20/$2.55 | 6 | 407 | 87% |
| 20 Nov 2026 | $11.00 | $0.13 | $0.05/$0.20 | 20 | 2 | 103% |
| 20 Nov 2026 | $17.00 | $3.28 | $3.10/$3.70 | 3 | 176 | 112% |
| 20 Nov 2026 | $10.00 | $0.00 | $0.00/$0.40 | 0 | 0 | 0% |
| 20 Nov 2026 | $18.00 | $4.18 | $4.00/$4.30 | 4 | 403 | 1% |
| 20 Nov 2026 | $9.00 | $0.00 | $0.00/$0.35 | 0 | 0 | 0% |
| 20 Nov 2026 | $19.00 | $5.65 | $5.00/$5.50 | 0 | 128 | 120% |
| 20 Nov 2026 | $20.00 | $6.45 | $5.50/$6.40 | 4 | 322 | 0% |
| 20 Nov 2026 | $21.00 | $7.63 | $6.50/$8.50 | 0 | 146 | 196% |
| 20 Nov 2026 | $22.00 | $8.62 | $8.00/$9.30 | 0 | 115 | 233% |
| 20 Nov 2026 | $23.00 | $9.62 | $8.50/$10.70 | 0 | 57 | 239% |
Open interest = contracts currently outstanding (not yet closed out). Higher open interest generally means a strike/expiry is more actively traded and easier to get in and out of.
No comments yet — be the first to weigh in on UMC.
Sign in to join the discussion.