RGNX · REGENXBIO Inc.

Track RGNX — free

$10.77 +0.11 (+0.98%) At close · Aug 14

Market Cap

$720.20M

66.01M

Options Chain

Underlying $10.77 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 6 days to expiry · 44 contracts · mixed snapshot sessions · Jul 6, 2026–Aug 14, 2026; 20 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 6d Sep 18 34d Oct 16 62d Jan 15 153d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
48	48	1495.7%	0.986	$9.54		—	—	—	—	0
Call · $1 In the money Snapshot session Aug 10, 2026 Last $9.54 Breakeven $10.54 Implied vol 1495.7% Delta 0.986 ≈99% ITM Gamma 0.002 Theta -0.062 Vega 0 Open interest 48 Model this call Put · $1 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
16	14	1000.3%	0.973	$8.56		—	—	—	—	0
Call · $2 In the money Snapshot session Aug 10, 2026 Last $8.56 Breakeven $10.56 Implied vol 1000.3% Delta 0.973 ≈97% ITM Gamma 0.004 Theta -0.07 Vega 0.001 Open interest 16 Model this call Put · $2 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	758%	0.961	—		—	—	—	—	0
Call · $3 In the money Snapshot session Unknown Last — Breakeven — Implied vol 758% Delta 0.961 ≈96% ITM Gamma 0.008 Theta -0.071 Vega 0.001 Open interest 0 Model this call Put · $3 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	598%	0.948	—		—	—	—	—	0
Call · $4 In the money Snapshot session Unknown Last — Breakeven — Implied vol 598% Delta 0.948 ≈95% ITM Gamma 0.013 Theta -0.071 Vega 0.001 Open interest 0 Model this call Put · $4 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	10	478.9%	0.933	$5.50		$0.04	—	—	6	41
Call · $5 In the money Snapshot session Aug 11, 2026 Last $5.50 Breakeven $10.50 Implied vol 478.9% Delta 0.933 ≈93% ITM Gamma 0.02 Theta -0.069 Vega 0.002 Open interest 3 Model this call Put · $5 Snapshot session Aug 5, 2026 Last $0.04 Breakeven $4.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 41 Model this put
0	—	384.1%	0.915	—		$0.08	-0.074	352.6%	1	1
Call · $6 In the money Snapshot session Unknown Last — Breakeven — Implied vol 384.1% Delta 0.915 ≈92% ITM Gamma 0.03 Theta -0.067 Vega 0.002 Open interest 0 Model this call Put · $6 Snapshot session Aug 11, 2026 Last $0.08 Breakeven $5.92 Implied vol 352.6% Delta -0.074 ≈7% ITM Gamma 0.029 Theta -0.055 Vega 0.002 Open interest 1 Model this put
0	—	297.4%	0.893	—		$0.20	-0.073	238.6%	1	29
Call · $7 In the money Snapshot session Unknown Last — Breakeven — Implied vol 297.4% Delta 0.893 ≈89% ITM Gamma 0.046 Theta -0.061 Vega 0.003 Open interest 0 Model this call Put · $7 Snapshot session Jul 22, 2026 Last $0.20 Breakeven $6.80 Implied vol 238.6% Delta -0.073 ≈7% ITM Gamma 0.042 Theta -0.036 Vega 0.002 Open interest 29 Model this put
0	—	221.7%	0.86	—		$0.13	-0.108	188.4%	1	366
Call · $8 In the money Snapshot session Unknown Last — Breakeven — Implied vol 221.7% Delta 0.86 ≈86% ITM Gamma 0.073 Theta -0.055 Vega 0.003 Open interest 0 Model this call Put · $8 Snapshot session Aug 11, 2026 Last $0.13 Breakeven $7.87 Implied vol 188.4% Delta -0.108 ≈11% ITM Gamma 0.073 Theta -0.039 Vega 0.003 Open interest 366 Model this put
17	7	327.5%	0.718	$2.22		$0.05	-0.153	124.4%	17	425
Call · $9 In the money Snapshot session Aug 11, 2026 Last $2.22 Breakeven $11.22 Implied vol 327.5% Delta 0.718 ≈72% ITM Gamma 0.076 Theta -0.125 Vega 0.005 Open interest 17 Model this call Put · $9 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $8.95 Implied vol 124.4% Delta -0.153 ≈15% ITM Gamma 0.139 Theta -0.032 Vega 0.003 Open interest 425 Model this put
1.8k	15	120.5%	0.651	$0.80		$0.51	-0.349	119.7%	1	226
Call · $10 In the money Snapshot session Aug 14, 2026 Last $0.80 Breakeven $10.80 Implied vol 120.5% Delta 0.651 ≈65% ITM Gamma 0.226 Theta -0.05 Vega 0.005 Open interest 1.8k Model this call Put · $10 Snapshot session Aug 11, 2026 Last $0.51 Breakeven $9.49 Implied vol 119.7% Delta -0.349 ≈35% ITM Gamma 0.228 Theta -0.049 Vega 0.005 Open interest 226 Model this put
Underlying $10.77
42	6	150.8%	0.445	$0.50		$1.45	-0.505	222.3%	21	21
Call · $11 Snapshot session Aug 13, 2026 Last $0.50 Breakeven $11.50 Implied vol 150.8% Delta 0.445 ≈45% ITM Gamma 0.192 Theta -0.066 Vega 0.006 Open interest 42 Model this call Put · $11 In the money Snapshot session Jul 16, 2026 Last $1.45 Breakeven $9.55 Implied vol 222.3% Delta -0.505 ≈51% ITM Gamma 0.131 Theta -0.097 Vega 0.006 Open interest 21 Model this put
715	64	140.1%	0.259	$0.25		$1.67	-0.572	282.5%	1	17
Call · $12 Snapshot session Aug 14, 2026 Last $0.25 Breakeven $12.25 Implied vol 140.1% Delta 0.259 ≈26% ITM Gamma 0.171 Theta -0.051 Vega 0.004 Open interest 715 Model this call Put · $12 In the money Snapshot session Aug 11, 2026 Last $1.67 Breakeven $10.33 Implied vol 282.5% Delta -0.572 ≈57% ITM Gamma 0.103 Theta -0.124 Vega 0.006 Open interest 17 Model this put
53	1	179.2%	0.215	$0.30		—	-0.822	159.8%	—	0
Call · $13 Snapshot session Aug 6, 2026 Last $0.30 Breakeven $13.30 Implied vol 179.2% Delta 0.215 ≈21% ITM Gamma 0.119 Theta -0.058 Vega 0.004 Open interest 53 Model this call Put · $13 In the money Snapshot session Unknown Last — Breakeven — Implied vol 159.8% Delta -0.822 ≈82% ITM Gamma 0.12 Theta -0.045 Vega 0.004 Open interest 0 Model this put
274	10	203.5%	0.168	$0.20		$2.66	-0.92	149.5%	3	8
Call · $14 Snapshot session Aug 6, 2026 Last $0.20 Breakeven $14.20 Implied vol 203.5% Delta 0.168 ≈17% ITM Gamma 0.091 Theta -0.057 Vega 0.004 Open interest 274 Model this call Put · $14 In the money Snapshot session Jul 14, 2026 Last $2.66 Breakeven $11.34 Implied vol 149.5% Delta -0.92 ≈92% ITM Gamma 0.075 Theta -0.024 Vega 0.002 Open interest 8 Model this put
133	32	589%	0.471	$0.10		$1.70	—	—	10	22
Call · $15 Snapshot session Aug 7, 2026 Last $0.10 Breakeven $15.10 Implied vol 589% Delta 0.471 ≈47% ITM Gamma 0.049 Theta -0.26 Vega 0.005 Open interest 133 Model this call Put · $15 In the money Snapshot session Jul 10, 2026 Last $1.70 Breakeven $13.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 22 Model this put
63	3	257.9%	0.141	$0.15		—	—	—	—	0
Call · $16 Snapshot session Aug 7, 2026 Last $0.15 Breakeven $16.15 Implied vol 257.9% Delta 0.141 ≈14% ITM Gamma 0.063 Theta -0.063 Vega 0.003 Open interest 63 Model this call Put · $16 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
6	1	748%	0.502	$0.30		—	—	—	—	0
Call · $17 Snapshot session Jul 17, 2026 Last $0.30 Breakeven $17.30 Implied vol 748% Delta 0.502 ≈50% ITM Gamma 0.038 Theta -0.331 Vega 0.005 Open interest 6 Model this call Put · $17 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	369.1%	0.187	—		—	—	—	—	0
Call · $18 Snapshot session Unknown Last — Breakeven — Implied vol 369.1% Delta 0.187 ≈19% ITM Gamma 0.054 Theta -0.111 Vega 0.003 Open interest 0 Model this call Put · $18 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	418.1%	0.205	—		—	—	—	—	0
Call · $19 Snapshot session Unknown Last — Breakeven — Implied vol 418.1% Delta 0.205 ≈20% ITM Gamma 0.05 Theta -0.132 Vega 0.005 Open interest 0 Model this call Put · $19 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	408.4%	0.174	$0.54		—	—	—	—	0
Call · $20 Snapshot session Jul 9, 2026 Last $0.54 Breakeven $20.54 Implied vol 408.4% Delta 0.174 ≈17% ITM Gamma 0.046 Theta -0.116 Vega 0.003 Open interest 1 Model this call Put · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	506.1%	0.236	—		—	—	—	—	0
Call · $21 Snapshot session Unknown Last — Breakeven — Implied vol 506.1% Delta 0.236 ≈24% ITM Gamma 0.044 Theta -0.172 Vega 0.005 Open interest 0 Model this call Put · $21 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
6	6	492.7%	0.153	$0.50		—	—	—	—	0
Call · $25 Snapshot session Jul 6, 2026 Last $0.50 Breakeven $25.50 Implied vol 492.7% Delta 0.153 ≈15% ITM Gamma 0.035 Theta -0.128 Vega 0.004 Open interest 6 Model this call Put · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 6, 2026–Aug 14, 2026; 20 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1590877 CUSIP 75901B107 13F (30d) 167 filings 161 filers Visit website Investor relations