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Janus International JBI

US equityMarket cap rank #3649Building Products & Equipment
$4.21 −$0.11 (-2.55%)
Pre-market · Oct 8, 9:00 am ET · After hours $4.21 0.00%
Open$4.23
Prev close$4.32
Day range$4.17 – $4.28
Volume2.00M
Market cap$574.39M
P/E (TTM)17.5
Dividend yield–

Average implied volatility across the listed chain right now: 178%. 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

2.505.007.5010CallsPuts

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

-32%96%225%353%2.505.0010CallsPuts

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 $5.00 $0.01 $0.00/$0.70 0 2 71%
16 Oct 2026 $2.50 $1.83 $1.45/$2.20 0 0 321%
16 Oct 2026 $7.50 $0.00 $0.00/$0.70 0 0 161%
16 Oct 2026 $10.00 $0.00 $0.00/$0.70 0 0 163%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $5.00 $0.69 $0.40/$1.15 0 101 0%
16 Oct 2026 $2.50 $0.00 $0.00/$0.05 0 1 156%
16 Oct 2026 $7.50 $3.18 $2.70/$3.90 0 0 192%
16 Oct 2026 $10.00 $5.68 $5.00/$6.50 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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