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Regenxbio RGNX

US equityMarket cap rank #3741Biotechnology
$7.56 −$0.04 (-0.53%)
Market open · Oct 8, 10:00 am ET · After hours $7.61 +0.21%
Open$7.50
Prev close$7.60
Day range$7.44 – $7.58
Volume82.9K
Market cap$498.73M
P/E (TTM)–
Dividend yield–

Average implied volatility across the listed chain right now: 215%. 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

1.004.007.00101316192530CallsPuts

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

-54%161%375%590%1.001230CallsPuts

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 $8.00 $0.25 $0.20/$0.50 1 312 112%
16 Oct 2026 $7.00 $0.80 $0.10/$4.90 60 99 509%
16 Oct 2026 $9.00 $0.07 $0.00/$0.15 0 341 94%
16 Oct 2026 $6.00 $1.49 $0.00/$4.90 0 0 0%
16 Oct 2026 $10.00 $0.01 $0.00/$4.90 0 89 96%
16 Oct 2026 $5.00 $2.46 $0.40/$4.90 0 15 185%
16 Oct 2026 $11.00 $0.00 $0.00/$1.15 0 11 97%
16 Oct 2026 $4.00 $3.45 $2.20/$4.60 0 28 0%
16 Oct 2026 $12.00 $0.00 $0.00/$1.00 0 718 98%
16 Oct 2026 $3.00 $4.45 $2.00/$6.80 0 1 0%
16 Oct 2026 $13.00 $0.00 $0.00/$1.00 0 12 102%
16 Oct 2026 $2.00 $5.45 $3.00/$7.80 0 0 0%
16 Oct 2026 $14.00 $0.00 $0.00/$0.15 0 12 115%
16 Oct 2026 $1.00 $6.45 $4.00/$8.80 0 0 0%
16 Oct 2026 $15.00 $0.00 $0.00/$1.90 0 73 127%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $8.00 $0.79 $0.00/$1.55 0 344 121%
16 Oct 2026 $7.00 $0.31 $0.00/$0.35 1 239 127%
16 Oct 2026 $9.00 $1.61 $0.10/$2.10 0 192 0%
16 Oct 2026 $6.00 $0.04 $0.00/$0.25 0 51 108%
16 Oct 2026 $10.00 $2.56 $0.60/$3.10 0 605 0%
16 Oct 2026 $5.00 $0.00 $0.00/$0.10 0 0 105%
16 Oct 2026 $11.00 $3.55 $1.25/$4.10 0 41 0%
16 Oct 2026 $4.00 $0.00 $0.00/$4.90 0 0 126%
16 Oct 2026 $12.00 $4.55 $2.20/$5.20 0 52 0%
16 Oct 2026 $3.00 $0.00 $0.00/$4.90 0 0 179%
16 Oct 2026 $13.00 $5.55 $3.20/$8.00 0 33 281%
16 Oct 2026 $2.00 $0.00 $0.00/$4.90 0 0 255%
16 Oct 2026 $14.00 $6.55 $4.30/$9.00 0 0 325%
16 Oct 2026 $1.00 $0.00 $0.00/$0.05 0 102 385%
16 Oct 2026 $15.00 $7.55 $5.30/$10.00 0 0 348%

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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