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Si-Bone SIBN

US equityMarket cap rank #3350Medical Devices
$19.10 −$0.45 (-2.30%)
Market closed · Oct 8, 4:10 am ET · Last extended-hours $19.10 0.00%
Open$19.27
Prev close$19.55
Day range$18.98 – $19.69
Volume547.6K
Market cap$856.03M
P/E (TTM)–
Dividend yield–

Average implied volatility across the listed chain right now: 206%. 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

2.507.501318233035CallsPuts

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

-91%272%635%998%2.501535CallsPuts

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 $20.00 $0.58 $0.00/$0.95 0 23 80%
16 Oct 2026 $17.50 $2.17 $0.40/$4.00 1 63 111%
16 Oct 2026 $22.50 $0.20 $0.05/$1.75 0 628 175%
16 Oct 2026 $15.00 $4.55 $4.00/$4.50 0 43 121%
16 Oct 2026 $25.00 $0.08 $0.00/$2.30 0 54 109%
16 Oct 2026 $12.50 $7.05 $4.70/$8.80 0 0 190%
16 Oct 2026 $10.00 $9.55 $7.20/$11.30 0 0 272%
16 Oct 2026 $30.00 $0.02 $0.00/$2.20 0 0 130%
16 Oct 2026 $7.50 $12.05 $10.00/$13.70 0 0 425%
16 Oct 2026 $5.00 $14.55 $12.50/$16.20 0 1 593%
16 Oct 2026 $35.00 $0.01 $0.00/$2.15 0 0 145%
16 Oct 2026 $2.50 $17.05 $14.90/$18.80 0 6 907%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $20.00 $1.03 $0.00/$3.30 0 6 38%
16 Oct 2026 $17.50 $0.12 $0.00/$2.25 0 2 56%
16 Oct 2026 $22.50 $3.15 $1.45/$5.50 0 0 77%
16 Oct 2026 $15.00 $0.00 $0.00/$1.35 0 0 60%
16 Oct 2026 $25.00 $5.53 $3.90/$7.90 0 0 74%
16 Oct 2026 $12.50 $0.00 $0.00/$2.15 0 4 79%
16 Oct 2026 $10.00 $0.00 $0.00/$1.95 0 7 119%
16 Oct 2026 $30.00 $10.46 $8.80/$12.80 0 0 0%
16 Oct 2026 $7.50 $0.00 $0.00/$1.95 0 0 169%
16 Oct 2026 $5.00 $0.00 $0.00/$1.35 0 0 240%
16 Oct 2026 $35.00 $15.45 $13.80/$17.80 0 0 0%
16 Oct 2026 $2.50 $0.00 $0.00/$0.05 0 0 363%

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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