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Gentherm THRM

US equityMarket cap rank #2903
$30.38 −$0.62 (-2.00%)
Pre-market · Oct 8, 7:00 am ET · After hours $30.20 -0.59%
Open$30.97
Prev close$31.00
Day range$29.98 – $31.79
Volume2.29M
Market cap$1.65B
P/E (TTM)35.3
Dividend yield–

Average implied volatility across the listed chain right now: 98%. 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

202833384858CallsPuts

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

-17%52%121%190%203558CallsPuts

The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $30.00 $1.00 $0.00/$4.90 1 0 43%
16 Oct 2026 $27.93 $3.56 $0.60/$4.90 0 4 62%
16 Oct 2026 $32.93 $0.25 $0.10/$0.45 5 28 58%
16 Oct 2026 $35.00 $0.28 $0.00/$4.90 0 0 83%
16 Oct 2026 $22.93 $8.46 $5.20/$10.00 0 0 121%
16 Oct 2026 $37.93 $0.18 $0.00/$4.90 0 16 101%
16 Oct 2026 $20.43 $10.96 $7.80/$12.50 0 30 172%
16 Oct 2026 $42.93 $0.09 $0.00/$4.90 0 5 124%
16 Oct 2026 $47.93 $0.05 $0.00/$4.90 0 1 140%
16 Oct 2026 $52.93 $0.03 $0.00/$4.90 0 0 154%
16 Oct 2026 $57.93 $0.02 $0.00/$4.90 0 0 165%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $30.00 $0.85 $0.00/$0.75 100 0 57%
16 Oct 2026 $27.93 $0.18 $0.20/$0.60 298 1,173 72%
16 Oct 2026 $32.93 $2.70 $1.05/$2.95 590 1,719 0%
16 Oct 2026 $35.00 $4.04 $2.00/$6.50 0 0 0%
16 Oct 2026 $22.93 $0.00 $0.00/$4.90 0 0 52%
16 Oct 2026 $37.93 $6.94 $5.00/$9.30 0 0 0%
16 Oct 2026 $20.43 $0.00 $0.00/$0.05 0 0 72%
16 Oct 2026 $42.93 $11.93 $10.00/$14.90 0 0 0%
16 Oct 2026 $47.93 $16.93 $15.00/$19.90 0 1 0%
16 Oct 2026 $52.93 $21.93 $20.00/$24.80 0 0 0%
16 Oct 2026 $57.93 $26.93 $25.00/$29.50 0 0 0%

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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