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Ironwood Pharmaceuticals IRWD

US equityMarket cap rank #3604Drug Manufacturers - Specialty & Generic
$3.75 +$0.12 (+3.31%)
Pre-market · Oct 8, 9:00 am ET · After hours $3.54 -5.59%
Open$3.58
Prev close$3.63
Day range$3.54 – $3.87
Volume2.05M
Market cap$619.65M
P/E (TTM)4.7
Dividend yield–

Average implied volatility across the listed chain right now: 175%. 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

2.505.007.50CallsPuts

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

-29%87%202%317%2.505.007.50CallsPuts

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 $2.50 $1.13 $0.60/$1.60 0 5 0%
16 Oct 2026 $5.00 $0.03 $0.00/$0.05 5 790 132%
16 Oct 2026 $7.50 $0.00 $0.00/$1.00 0 25 135%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $2.50 $0.00 $0.00/$0.30 0 0 101%
16 Oct 2026 $5.00 $1.37 $0.90/$1.90 0 0 219%
16 Oct 2026 $7.50 $3.87 $3.30/$4.30 0 0 289%

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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