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United Microelectronics UMC

US equityMarket cap rank #266China Concept Stocks
$24.07
−$0.62 (-2.49%)
Market open · Sep 24, 2:00 pm ET
After hours $24.70 +0.08%
Open$24.02
Prev close$24.68
Day range$23.80 – $24.35
Volume3.69M
Market cap$60.59B
P/E (TTM)23.3
Dividend yield–

Average implied volatility across the listed chain right now: 70%. 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.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $24.00 $1.79 $1.75/$2.05 22 2,495 58%
16 Oct 2026 $25.00 $1.44 $1.40/$1.65 1,019 17,619 62%
16 Oct 2026 $23.00 $2.47 $2.40/$2.65 163 27,058 59%
16 Oct 2026 $26.00 $1.09 $1.00/$1.40 211 29,587 65%
16 Oct 2026 $22.00 $3.20 $3.10/$3.50 74 1,942 64%
16 Oct 2026 $27.00 $0.77 $0.35/$0.90 18 806 54%
16 Oct 2026 $21.00 $3.57 $3.90/$4.30 4 1,560 67%
16 Oct 2026 $28.00 $0.55 $0.30/$0.65 6 367 56%
16 Oct 2026 $20.00 $4.80 $4.80/$5.30 22 2,246 76%
16 Oct 2026 $29.00 $0.40 $0.35/$0.55 4 903 64%
16 Oct 2026 $19.00 $5.60 $5.10/$6.10 3 316 0%
16 Oct 2026 $30.00 $0.30 $0.25/$0.40 81 2,291 64%
16 Oct 2026 $18.00 $6.34 $6.20/$7.00 25 2,938 0%
16 Oct 2026 $31.00 $0.28 $0.00/$1.30 0 252 68%
16 Oct 2026 $17.00 $7.55 $6.90/$9.00 0 95 107%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $24.00 $1.31 $0.70/$1.35 50 1,133 50%
16 Oct 2026 $25.00 $1.80 $1.65/$1.95 50 678 60%
16 Oct 2026 $23.00 $0.91 $0.80/$0.95 686 604 61%
16 Oct 2026 $26.00 $2.66 $2.05/$2.50 0 271 55%
16 Oct 2026 $22.00 $0.55 $0.50/$0.65 129 5,290 61%
16 Oct 2026 $27.00 $3.30 $2.60/$3.80 0 303 64%
16 Oct 2026 $21.00 $0.37 $0.25/$0.45 3 1,793 62%
16 Oct 2026 $28.00 $4.12 $3.50/$4.70 0 140 71%
16 Oct 2026 $20.00 $0.20 $0.15/$0.25 90 2,062 62%
16 Oct 2026 $29.00 $4.94 $4.60/$5.50 0 143 78%
16 Oct 2026 $19.00 $0.20 $0.10/$0.40 2 3,921 78%
16 Oct 2026 $30.00 $6.05 $4.80/$6.30 1 246 58%
16 Oct 2026 $18.00 $0.10 $0.05/$0.10 0 2,085 68%
16 Oct 2026 $31.00 $6.77 $5.30/$8.20 0 9 78%
16 Oct 2026 $17.00 $0.08 $0.00/$0.20 80 4,132 80%

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.

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