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Prime Medicine PRME

US equityMarket cap rank #3545
$3.65 −$0.25 (-6.41%)
Market open · Oct 8, 12:30 pm ET · After hours $3.88 -0.42%
Open$3.83
Prev close$3.90
Day range$3.58 – $3.90
Volume3.46M
Market cap$662.03M
P/E (TTM)–
Dividend yield–

Average implied volatility across the listed chain right now: 204%. 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

1.002.003.004.005.006.007.008.00CallsPuts

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

-39%116%272%427%1.004.008.00CallsPuts

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 $4.00 $0.20 $0.10/$0.20 27 2,347 102%
16 Oct 2026 $3.00 $0.85 $0.75/$1.05 4 2,462 185%
16 Oct 2026 $5.00 $0.05 $0.00/$0.20 8 1,464 148%
16 Oct 2026 $2.00 $1.92 $1.35/$2.35 0 45 190%
16 Oct 2026 $6.00 $0.01 $0.00/$0.30 4 316 154%
16 Oct 2026 $1.00 $2.90 $2.30/$3.30 0 158 388%
16 Oct 2026 $7.00 $0.00 $0.00/$0.05 0 174 143%
16 Oct 2026 $8.00 $0.00 $0.00/$0.10 0 35 146%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $4.00 $0.40 $0.30/$0.70 3 247 168%
16 Oct 2026 $3.00 $0.10 $0.00/$0.10 0 827 183%
16 Oct 2026 $5.00 $1.15 $1.00/$1.90 0 51 265%
16 Oct 2026 $2.00 $0.02 $0.00/$0.15 0 156 248%
16 Oct 2026 $6.00 $2.10 $1.75/$2.75 0 52 211%
16 Oct 2026 $1.00 $0.00 $0.00/$0.05 0 0 329%
16 Oct 2026 $7.00 $3.10 $2.80/$3.80 0 23 0%
16 Oct 2026 $8.00 $4.10 $3.80/$4.80 0 32 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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