RYTM · Rhythm Pharmaceuticals, Inc.

Track RYTM — free

$115.48 -0.54 (-0.47%) At close · Aug 14

Market Cap

$7.95B

68.85M

Options Chain

Underlying $115.48 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 50 contracts · mixed snapshot sessions · Jun 18, 2026–Aug 14, 2026; 29 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 5d Sep 18 33d Oct 16 61d Nov 20 96d Dec 18 124d Jan 15 152d Mar 19 215d Dec 17 488d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $45 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $45 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	0.1%	1	—		—	-0.018	382.4%	—	0
Call · $50 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 0 Model this call Put · $50 Snapshot session Unknown Last — Breakeven — Implied vol 382.4% Delta -0.018 ≈2% ITM Gamma 0.001 Theta -0.231 Vega 0.009 Open interest 0 Model this put
0	—	0.1%	1	—		—	-0.022	347%	—	0
Call · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 0 Model this call Put · $55 Snapshot session Unknown Last — Breakeven — Implied vol 347% Delta -0.022 ≈2% ITM Gamma 0.001 Theta -0.243 Vega 0.01 Open interest 0 Model this put
0	—	241.1%	0.993	—		—	-0.023	304.9%	—	0
Call · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol 241.1% Delta 0.993 ≈99% ITM Gamma 0.001 Theta -0.069 Vega 0.002 Open interest 0 Model this call Put · $60 Snapshot session Unknown Last — Breakeven — Implied vol 304.9% Delta -0.023 ≈2% ITM Gamma 0.001 Theta -0.22 Vega 0.01 Open interest 0 Model this put
0	—	0.1%	1	—		$0.75	-0.032	285.3%	1	1
Call · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.006 Vega 0 Open interest 0 Model this call Put · $65 Snapshot session Jun 18, 2026 Last $0.75 Breakeven $64.25 Implied vol 285.3% Delta -0.032 ≈3% ITM Gamma 0.002 Theta -0.268 Vega 0.01 Open interest 1 Model this put
0	—	0.1%	1	—		$1.25	-0.029	239.7%	1	1
Call · $70 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $70 Snapshot session Jun 18, 2026 Last $1.25 Breakeven $68.75 Implied vol 239.7% Delta -0.029 ≈3% ITM Gamma 0.002 Theta -0.209 Vega 0.011 Open interest 1 Model this put
0	—	0.1%	1	—		—	-0.035	215.1%	—	0
Call · $75 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $75 Snapshot session Unknown Last — Breakeven — Implied vol 215.1% Delta -0.035 ≈4% ITM Gamma 0.003 Theta -0.221 Vega 0.011 Open interest 0 Model this put
0	—	—	—	—		—	-0.06	216.4%	—	0
Call · $80 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $80 Snapshot session Unknown Last — Breakeven — Implied vol 216.4% Delta -0.06 ≈6% ITM Gamma 0.004 Theta -0.341 Vega 0.02 Open interest 0 Model this put
0	—	135.6%	0.977	—		$1.80	-0.069	186.5%	1	1
Call · $85 In the money Snapshot session Unknown Last — Breakeven — Implied vol 135.6% Delta 0.977 ≈98% ITM Gamma 0.003 Theta -0.107 Vega 0.006 Open interest 0 Model this call Put · $85 Snapshot session Jun 26, 2026 Last $1.80 Breakeven $83.20 Implied vol 186.5% Delta -0.069 ≈7% ITM Gamma 0.005 Theta -0.325 Vega 0.021 Open interest 1 Model this put
4	4	—	—	$18.81		$0.30	-0.113	191.8%	3	7
Call · $90 In the money Snapshot session Jul 17, 2026 Last $18.81 Breakeven $108.81 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $90 Snapshot session Aug 6, 2026 Last $0.30 Breakeven $89.70 Implied vol 191.8% Delta -0.113 ≈11% ITM Gamma 0.007 Theta -0.491 Vega 0.032 Open interest 7 Model this put
0	1	67.1%	0.994	$17.00		$0.30	-0.06	111.4%	20	30
Call · $95 In the money Snapshot session Jun 26, 2026 Last $17.00 Breakeven $112.00 Implied vol 67.1% Delta 0.994 ≈99% ITM Gamma 0.002 Theta -0.025 Vega 0.003 Open interest 0 Model this call Put · $95 Snapshot session Aug 6, 2026 Last $0.30 Breakeven $94.70 Implied vol 111.4% Delta -0.06 ≈6% ITM Gamma 0.008 Theta -0.177 Vega 0.022 Open interest 30 Model this put
147	1	60.4%	0.979	$9.90		$3.72	-0.085	91.1%	1	2
Call · $100 In the money Snapshot session Aug 6, 2026 Last $9.90 Breakeven $109.90 Implied vol 60.4% Delta 0.979 ≈98% ITM Gamma 0.006 Theta -0.049 Vega 0.007 Open interest 147 Model this call Put · $100 Snapshot session Aug 4, 2026 Last $3.72 Breakeven $96.28 Implied vol 91.1% Delta -0.085 ≈8% ITM Gamma 0.012 Theta -0.185 Vega 0.023 Open interest 2 Model this put
40	1	67.2%	0.891	$13.50		—	-0.104	65.4%	—	0
Call · $105 In the money Snapshot session Aug 13, 2026 Last $13.50 Breakeven $118.50 Implied vol 67.2% Delta 0.891 ≈89% ITM Gamma 0.02 Theta -0.176 Vega 0.023 Open interest 40 Model this call Put · $105 Snapshot session Unknown Last — Breakeven — Implied vol 65.4% Delta -0.104 ≈10% ITM Gamma 0.02 Theta -0.156 Vega 0.023 Open interest 0 Model this put
58	2	70.9%	0.732	$6.75		$0.85	-0.267	70.1%	10	11
Call · $110 In the money Snapshot session Aug 7, 2026 Last $6.75 Breakeven $116.75 Implied vol 70.9% Delta 0.732 ≈73% ITM Gamma 0.034 Theta -0.317 Vega 0.047 Open interest 58 Model this call Put · $110 Snapshot session Aug 13, 2026 Last $0.85 Breakeven $109.15 Implied vol 70.1% Delta -0.267 ≈27% ITM Gamma 0.034 Theta -0.302 Vega 0.047 Open interest 11 Model this put
2	1	60.5%	0.54	$4.91		—	-0.46	57%	—	0
Call · $115 In the money Snapshot session Aug 10, 2026 Last $4.91 Breakeven $119.91 Implied vol 60.5% Delta 0.54 ≈54% ITM Gamma 0.048 Theta -0.326 Vega 0.055 Open interest 2 Model this call Put · $115 Snapshot session Unknown Last — Breakeven — Implied vol 57% Delta -0.46 ≈46% ITM Gamma 0.051 Theta -0.297 Vega 0.055 Open interest 0 Model this put
Underlying $115.48
27	2	59.2%	0.31	$1.55		—	-0.715	52.8%	—	0
Call · $120 Snapshot session Aug 14, 2026 Last $1.55 Breakeven $121.55 Implied vol 59.2% Delta 0.31 ≈31% ITM Gamma 0.043 Theta -0.28 Vega 0.049 Open interest 27 Model this call Put · $120 In the money Snapshot session Unknown Last — Breakeven — Implied vol 52.8% Delta -0.715 ≈72% ITM Gamma 0.047 Theta -0.23 Vega 0.049 Open interest 0 Model this put
14	11	55.7%	0.126	$1.89		—	—	—	—	0
Call · $125 Snapshot session Jul 21, 2026 Last $1.89 Breakeven $126.89 Implied vol 55.7% Delta 0.126 ≈13% ITM Gamma 0.027 Theta -0.154 Vega 0.026 Open interest 14 Model this call Put · $125 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
105	5	77.7%	0.112	$0.35		—	-0.981	49.1%	—	0
Call · $130 Snapshot session Aug 12, 2026 Last $0.35 Breakeven $130.35 Implied vol 77.7% Delta 0.112 ≈11% ITM Gamma 0.018 Theta -0.197 Vega 0.026 Open interest 105 Model this call Put · $130 In the money Snapshot session Unknown Last — Breakeven — Implied vol 49.1% Delta -0.981 ≈98% ITM Gamma 0.008 Theta -0.025 Vega 0.007 Open interest 0 Model this put
1	1	91.4%	0.084	$2.10		—	-0.961	73.6%	—	0
Call · $135 Snapshot session Jun 18, 2026 Last $2.10 Breakeven $137.10 Implied vol 91.4% Delta 0.084 ≈8% ITM Gamma 0.012 Theta -0.188 Vega 0.027 Open interest 1 Model this call Put · $135 In the money Snapshot session Unknown Last — Breakeven — Implied vol 73.6% Delta -0.961 ≈96% ITM Gamma 0.009 Theta -0.075 Vega 0.015 Open interest 0 Model this put
1	1	104.2%	0.069	$2.25		—	-0.966	88%	—	0
Call · $140 Snapshot session Jul 1, 2026 Last $2.25 Breakeven $142.25 Implied vol 104.2% Delta 0.069 ≈7% ITM Gamma 0.009 Theta -0.184 Vega 0.016 Open interest 1 Model this call Put · $140 In the money Snapshot session Unknown Last — Breakeven — Implied vol 88% Delta -0.966 ≈97% ITM Gamma 0.007 Theta -0.081 Vega 0.014 Open interest 0 Model this put
1	1	121%	0.067	$1.70		—	—	—	—	0
Call · $145 Snapshot session Jul 1, 2026 Last $1.70 Breakeven $146.70 Implied vol 121% Delta 0.067 ≈7% ITM Gamma 0.008 Theta -0.208 Vega 0.016 Open interest 1 Model this call Put · $145 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	131%	0.057	$1.25		—	-0.98	105.4%	—	0
Call · $150 Snapshot session Jul 2, 2026 Last $1.25 Breakeven $151.25 Implied vol 131% Delta 0.057 ≈6% ITM Gamma 0.006 Theta -0.197 Vega 0.016 Open interest 1 Model this call Put · $150 In the money Snapshot session Unknown Last — Breakeven — Implied vol 105.4% Delta -0.98 ≈98% ITM Gamma 0.004 Theta -0.06 Vega 0.007 Open interest 0 Model this put
1	1	143.8%	0.053	$0.95		—	-0.99	107.2%	—	0
Call · $155 Snapshot session Jul 2, 2026 Last $0.95 Breakeven $155.95 Implied vol 143.8% Delta 0.053 ≈5% ITM Gamma 0.005 Theta -0.203 Vega 0.016 Open interest 1 Model this call Put · $155 In the money Snapshot session Unknown Last — Breakeven — Implied vol 107.2% Delta -0.99 ≈99% ITM Gamma 0.002 Theta -0.031 Vega 0.003 Open interest 0 Model this put
0	—	174.1%	0.072	—		—	-0.991	116.8%	—	0
Call · $160 Snapshot session Unknown Last — Breakeven — Implied vol 174.1% Delta 0.072 ≈7% ITM Gamma 0.006 Theta -0.316 Vega 0.017 Open interest 0 Model this call Put · $160 In the money Snapshot session Unknown Last — Breakeven — Implied vol 116.8% Delta -0.991 ≈99% ITM Gamma 0.002 Theta -0.032 Vega 0.003 Open interest 0 Model this put
0	—	174%	0.054	—		—	-0.992	126.2%	—	0
Call · $165 Snapshot session Unknown Last — Breakeven — Implied vol 174% Delta 0.054 ≈5% ITM Gamma 0.005 Theta -0.251 Vega 0.017 Open interest 0 Model this call Put · $165 In the money Snapshot session Unknown Last — Breakeven — Implied vol 126.2% Delta -0.992 ≈99% ITM Gamma 0.002 Theta -0.033 Vega 0.003 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 · Jun 18, 2026–Aug 14, 2026; 29 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 1649904 CUSIP 76243J105 13F (30d) 284 filings 282 filers Visit website Investor relations