RDN · Radian Group Inc

Track RDN — free

$37.06 -0.21 (-0.55%) At close · Aug 17

Market Cap

$4.93B

132.30M

Options Chain

Underlying $37.06 · today Options Calculator

Positioning

Aug 21, 2026 · 3 days to expiry · 48 contracts · mixed snapshot sessions · Jan 6, 2026–Aug 17, 2026; 15 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 3d Sep 18 31d Nov 20 94d Dec 18 122d Feb 19 185d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
28	30	356.6%	0.968	$13.90		$0.50	—	—	1	1
Call · $20 In the money Snapshot session Jun 8, 2026 Last $13.90 Breakeven $33.90 Implied vol 356.6% Delta 0.968 ≈97% ITM Gamma 0.005 Theta -0.124 Vega 0.003 Open interest 28 Model this call Put · $20 Snapshot session Mar 25, 2026 Last $0.50 Breakeven $19.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	190.1%	0.982	—		$0.40	—	—	5	1
Call · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol 190.1% Delta 0.982 ≈98% ITM Gamma 0.006 Theta -0.04 Vega 0.002 Open interest 0 Model this call Put · $25 Snapshot session Apr 2, 2026 Last $0.40 Breakeven $24.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	225.4%	0.95	—		$0.75	-0.079	267.7%	1	1
Call · $26 In the money Snapshot session Unknown Last — Breakeven — Implied vol 225.4% Delta 0.95 ≈95% ITM Gamma 0.012 Theta -0.114 Vega 0.003 Open interest 0 Model this call Put · $26 Snapshot session Mar 25, 2026 Last $0.75 Breakeven $25.25 Implied vol 267.7% Delta -0.079 ≈8% ITM Gamma 0.014 Theta -0.193 Vega 0.006 Open interest 1 Model this put
1	1	206.7%	0.945	$6.90		$0.80	-0.086	245.7%	1	1
Call · $27 In the money Snapshot session Jan 29, 2026 Last $6.90 Breakeven $33.90 Implied vol 206.7% Delta 0.945 ≈95% ITM Gamma 0.014 Theta -0.113 Vega 0.003 Open interest 1 Model this call Put · $27 Snapshot session Feb 6, 2026 Last $0.80 Breakeven $26.20 Implied vol 245.7% Delta -0.086 ≈9% ITM Gamma 0.017 Theta -0.189 Vega 0.006 Open interest 1 Model this put
0	—	84.3%	1	—		$0.95	-0.094	224.5%	1	1
Call · $28 In the money Snapshot session Unknown Last — Breakeven — Implied vol 84.3% Delta 1 ≈100% ITM Gamma 0 Theta 0 Vega 0 Open interest 0 Model this call Put · $28 Snapshot session Feb 6, 2026 Last $0.95 Breakeven $27.05 Implied vol 224.5% Delta -0.094 ≈9% ITM Gamma 0.019 Theta -0.184 Vega 0.006 Open interest 1 Model this put
2	1	166.8%	0.934	$4.70		$0.90	-0.102	204.1%	1	1
Call · $29 In the money Snapshot session Feb 3, 2026 Last $4.70 Breakeven $33.70 Implied vol 166.8% Delta 0.934 ≈93% ITM Gamma 0.02 Theta -0.104 Vega 0.006 Open interest 2 Model this call Put · $29 Snapshot session Jan 6, 2026 Last $0.90 Breakeven $28.10 Implied vol 204.1% Delta -0.102 ≈10% ITM Gamma 0.023 Theta -0.18 Vega 0.006 Open interest 1 Model this put
0	—	147.8%	0.927	—		$0.05	-0.054	133%	4	6
Call · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 147.8% Delta 0.927 ≈93% ITM Gamma 0.024 Theta -0.1 Vega 0.006 Open interest 0 Model this call Put · $30 Snapshot session Aug 17, 2026 Last $0.05 Breakeven $29.95 Implied vol 133% Delta -0.054 ≈5% ITM Gamma 0.022 Theta -0.072 Vega 0.004 Open interest 6 Model this put
0	—	145.4%	0.896	—		$0.85	-0.125	162.2%	16	16
Call · $31 In the money Snapshot session Unknown Last — Breakeven — Implied vol 145.4% Delta 0.896 ≈90% ITM Gamma 0.033 Theta -0.129 Vega 0.006 Open interest 0 Model this call Put · $31 Snapshot session Jun 9, 2026 Last $0.85 Breakeven $30.15 Implied vol 162.2% Delta -0.125 ≈13% ITM Gamma 0.033 Theta -0.165 Vega 0.009 Open interest 16 Model this put
2	1	175.1%	0.815	$3.10		$0.03	-0.238	239.8%	1	5
Call · $32 In the money Snapshot session Mar 18, 2026 Last $3.10 Breakeven $35.10 Implied vol 175.1% Delta 0.815 ≈82% ITM Gamma 0.04 Theta -0.23 Vega 0.009 Open interest 2 Model this call Put · $32 Snapshot session Aug 3, 2026 Last $0.03 Breakeven $31.97 Implied vol 239.8% Delta -0.238 ≈24% ITM Gamma 0.034 Theta -0.364 Vega 0.012 Open interest 5 Model this put
12	10	101.7%	0.877	$3.00		$0.53	-0.135	106.9%	1	2
Call · $33 In the money Snapshot session Jun 16, 2026 Last $3.00 Breakeven $36.00 Implied vol 101.7% Delta 0.877 ≈88% ITM Gamma 0.053 Theta -0.103 Vega 0.01 Open interest 12 Model this call Put · $33 Snapshot session Jun 25, 2026 Last $0.53 Breakeven $32.47 Implied vol 106.9% Delta -0.135 ≈14% ITM Gamma 0.053 Theta -0.114 Vega 0.01 Open interest 2 Model this put
49	100	84.3%	0.846	$2.84		$1.30	-0.189	99.6%	1	2
Call · $34 In the money Snapshot session Aug 6, 2026 Last $2.84 Breakeven $36.84 Implied vol 84.3% Delta 0.846 ≈85% ITM Gamma 0.073 Theta -0.098 Vega 0.01 Open interest 49 Model this call Put · $34 Snapshot session May 26, 2026 Last $1.30 Breakeven $32.70 Implied vol 99.6% Delta -0.189 ≈19% ITM Gamma 0.071 Theta -0.133 Vega 0.01 Open interest 2 Model this put
4	1	—	—	$3.48		—	-0.224	76.8%	—	0
Call · $35 In the money Snapshot session Jul 9, 2026 Last $3.48 Breakeven $38.48 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $35 Snapshot session Unknown Last — Breakeven — Implied vol 76.8% Delta -0.224 ≈22% ITM Gamma 0.103 Theta -0.114 Vega 0.013 Open interest 0 Model this put
16	1	—	—	$2.70		$0.75	-0.3	55.5%	2	24
Call · $36 In the money Snapshot session Jul 16, 2026 Last $2.70 Breakeven $38.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 16 Model this call Put · $36 Snapshot session Aug 6, 2026 Last $0.75 Breakeven $35.25 Implied vol 55.5% Delta -0.3 ≈30% ITM Gamma 0.163 Theta -0.095 Vega 0.013 Open interest 24 Model this put
44	2	35.7%	0.522	$0.55		$0.60	-0.478	70.2%	6	6
Call · $37 In the money Snapshot session Aug 10, 2026 Last $0.55 Breakeven $37.55 Implied vol 35.7% Delta 0.522 ≈52% ITM Gamma 0.294 Theta -0.071 Vega 0.015 Open interest 44 Model this call Put · $37 Snapshot session Jul 21, 2026 Last $0.60 Breakeven $36.40 Implied vol 70.2% Delta -0.478 ≈48% ITM Gamma 0.15 Theta -0.139 Vega 0.015 Open interest 6 Model this put
Underlying $37.06
19	3	50%	0.323	$0.31		$1.20	-0.75	35.3%	24	19
Call · $38 Snapshot session Aug 7, 2026 Last $0.31 Breakeven $38.31 Implied vol 50% Delta 0.323 ≈32% ITM Gamma 0.188 Theta -0.088 Vega 0.014 Open interest 19 Model this call Put · $38 In the money Snapshot session Jul 23, 2026 Last $1.20 Breakeven $36.80 Implied vol 35.3% Delta -0.75 ≈75% ITM Gamma 0.237 Theta -0.055 Vega 0.014 Open interest 19 Model this put
2	4	62.1%	0.223	$0.93		$2.30	-0.874	42.4%	1	1
Call · $39 Snapshot session Jul 22, 2026 Last $0.93 Breakeven $39.93 Implied vol 62.1% Delta 0.223 ≈22% ITM Gamma 0.126 Theta -0.091 Vega 0.01 Open interest 2 Model this call Put · $39 In the money Snapshot session Aug 11, 2026 Last $2.30 Breakeven $36.70 Implied vol 42.4% Delta -0.874 ≈87% ITM Gamma 0.128 Theta -0.043 Vega 0.007 Open interest 1 Model this put
62	280	108.8%	0.267	$0.05		$1.25	—	—	5	0
Call · $40 Snapshot session Aug 6, 2026 Last $0.05 Breakeven $40.05 Implied vol 108.8% Delta 0.267 ≈27% ITM Gamma 0.079 Theta -0.176 Vega 0.014 Open interest 62 Model this call Put · $40 In the money Snapshot session Aug 3, 2026 Last $1.25 Breakeven $38.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
5	1	115.1%	0.216	$0.35		—	—	—	—	0
Call · $41 Snapshot session Aug 7, 2026 Last $0.35 Breakeven $41.35 Implied vol 115.1% Delta 0.216 ≈22% ITM Gamma 0.067 Theta -0.166 Vega 0.011 Open interest 5 Model this call Put · $41 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
27	12	121.1%	0.176	$0.15		—	—	—	—	0
Call · $42 Snapshot session Jul 31, 2026 Last $0.15 Breakeven $42.15 Implied vol 121.1% Delta 0.176 ≈18% ITM Gamma 0.056 Theta -0.153 Vega 0.011 Open interest 27 Model this call Put · $42 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	2	136.1%	0.162	$0.14		—	—	—	—	0
Call · $43 Snapshot session Jul 30, 2026 Last $0.14 Breakeven $43.14 Implied vol 136.1% Delta 0.162 ≈16% ITM Gamma 0.047 Theta -0.164 Vega 0.011 Open interest 3 Model this call Put · $43 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
59	2	102.9%	0.06	$0.06		—	—	—	—	0
Call · $44 Snapshot session Aug 3, 2026 Last $0.06 Breakeven $44.06 Implied vol 102.9% Delta 0.06 ≈6% ITM Gamma 0.03 Theta -0.06 Vega 0.004 Open interest 59 Model this call Put · $44 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	142.5%	0.108	—		$6.60	—	—	1	0
Call · $45 Snapshot session Unknown Last — Breakeven — Implied vol 142.5% Delta 0.108 ≈11% ITM Gamma 0.034 Theta -0.129 Vega 0.007 Open interest 0 Model this call Put · $45 In the money Snapshot session Jul 14, 2026 Last $6.60 Breakeven $38.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $46 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $46 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $47 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $47 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 · Jan 6, 2026–Aug 17, 2026; 15 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 890926 CUSIP 750236101 13F (30d) 355 filings 354 filers Visit website Investor relations