ACGL · Arch Capital Group Ltd.

Track ACGL — free

$98.71 +0.68 (+0.69%) At close · Aug 14

Market Cap

$33.70B

341.23M

Options Chain

Underlying $98.71 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 38 contracts · mixed snapshot sessions · Jun 26, 2026–Aug 14, 2026; 17 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 Nov 20 96d Dec 18 124d Mar 19 215d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.10	—	—	1	1
Call · $50 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $50 Snapshot session Aug 10, 2026 Last $0.10 Breakeven $49.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $55 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.043	173.5%	—	0
Call · $70 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $70 Snapshot session Unknown Last — Breakeven — Implied vol 173.5% Delta -0.043 ≈4% ITM Gamma 0.004 Theta -0.173 Vega 0.011 Open interest 0 Model this put
4	5	—	—	$23.25		—	-0.051	145.6%	—	0
Call · $75 In the money Snapshot session Aug 13, 2026 Last $23.25 Breakeven $98.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $75 Snapshot session Unknown Last — Breakeven — Implied vol 145.6% Delta -0.051 ≈5% ITM Gamma 0.006 Theta -0.167 Vega 0.011 Open interest 0 Model this put
0	—	—	—	—		$0.05	-0.114	155.9%	5	7
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 Jul 31, 2026 Last $0.05 Breakeven $79.95 Implied vol 155.9% Delta -0.114 ≈11% ITM Gamma 0.01 Theta -0.33 Vega 0.029 Open interest 7 Model this put
4	8	—	—	$12.90		$0.36	-0.039	71.6%	1	67
Call · $85 In the money Snapshot session Aug 13, 2026 Last $12.90 Breakeven $97.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $85 Snapshot session Aug 3, 2026 Last $0.36 Breakeven $84.64 Implied vol 71.6% Delta -0.039 ≈4% ITM Gamma 0.01 Theta -0.065 Vega 0.012 Open interest 67 Model this put
1	1	—	—	$12.65		$0.05	-0.049	47.2%	1	339
Call · $90 In the money Snapshot session Jul 14, 2026 Last $12.65 Breakeven $102.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $90 Snapshot session Aug 12, 2026 Last $0.05 Breakeven $89.95 Implied vol 47.2% Delta -0.049 ≈5% ITM Gamma 0.017 Theta -0.051 Vega 0.012 Open interest 339 Model this put
75	1	—	—	$5.95		$0.21	-0.114	28.2%	4	80
Call · $95 In the money Snapshot session Aug 4, 2026 Last $5.95 Breakeven $100.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 75 Model this call Put · $95 Snapshot session Aug 14, 2026 Last $0.21 Breakeven $94.79 Implied vol 28.2% Delta -0.114 ≈11% ITM Gamma 0.056 Theta -0.059 Vega 0.021 Open interest 80 Model this put
Underlying $98.71
152	2	31.4%	0.413	$1.06		$1.90	-0.583	33.5%	3	91
Call · $100 Snapshot session Aug 14, 2026 Last $1.06 Breakeven $101.06 Implied vol 31.4% Delta 0.413 ≈41% ITM Gamma 0.101 Theta -0.137 Vega 0.05 Open interest 152 Model this call Put · $100 In the money Snapshot session Aug 3, 2026 Last $1.90 Breakeven $98.10 Implied vol 33.5% Delta -0.583 ≈58% ITM Gamma 0.095 Theta -0.137 Vega 0.05 Open interest 91 Model this put
531	6	33%	0.081	$0.05		$6.85	-0.798	53.7%	1	107
Call · $105 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $105.05 Implied vol 33% Delta 0.081 ≈8% ITM Gamma 0.037 Theta -0.055 Vega 0.023 Open interest 531 Model this call Put · $105 In the money Snapshot session Aug 7, 2026 Last $6.85 Breakeven $98.15 Implied vol 53.7% Delta -0.798 ≈80% ITM Gamma 0.043 Theta -0.158 Vega 0.034 Open interest 107 Model this put
441	2	63.6%	0.101	$0.05		$6.50	-0.874	71%	1	0
Call · $110 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $110.05 Implied vol 63.6% Delta 0.101 ≈10% ITM Gamma 0.022 Theta -0.123 Vega 0.023 Open interest 441 Model this call Put · $110 In the money Snapshot session Jul 29, 2026 Last $6.50 Breakeven $103.50 Implied vol 71% Delta -0.874 ≈87% ITM Gamma 0.024 Theta -0.153 Vega 0.023 Open interest 0 Model this put
38	1	79.2%	0.071	$0.05		—	-0.903	88.5%	—	0
Call · $115 Snapshot session Jul 30, 2026 Last $0.05 Breakeven $115.05 Implied vol 79.2% Delta 0.071 ≈7% ITM Gamma 0.014 Theta -0.118 Vega 0.014 Open interest 38 Model this call Put · $115 In the money Snapshot session Unknown Last — Breakeven — Implied vol 88.5% Delta -0.903 ≈90% ITM Gamma 0.016 Theta -0.157 Vega 0.023 Open interest 0 Model this put
2	1	84.6%	0.037	$0.20		—	-0.95	91.1%	—	0
Call · $120 Snapshot session Jun 29, 2026 Last $0.20 Breakeven $120.20 Implied vol 84.6% Delta 0.037 ≈4% ITM Gamma 0.008 Theta -0.074 Vega 0.014 Open interest 2 Model this call Put · $120 In the money Snapshot session Unknown Last — Breakeven — Implied vol 91.1% Delta -0.95 ≈95% ITM Gamma 0.009 Theta -0.094 Vega 0.014 Open interest 0 Model this put
9	9	91.5%	0.024	$0.08		—	-0.949	110.1%	—	0
Call · $125 Snapshot session Jun 26, 2026 Last $0.08 Breakeven $125.08 Implied vol 91.5% Delta 0.024 ≈2% ITM Gamma 0.005 Theta -0.055 Vega 0.007 Open interest 9 Model this call Put · $125 In the money Snapshot session Unknown Last — Breakeven — Implied vol 110.1% Delta -0.949 ≈95% ITM Gamma 0.008 Theta -0.117 Vega 0.014 Open interest 0 Model this put
5	5	104.4%	0.021	$0.07		—	-0.943	131.9%	—	0
Call · $130 Snapshot session Jun 26, 2026 Last $0.07 Breakeven $130.07 Implied vol 104.4% Delta 0.021 ≈2% ITM Gamma 0.004 Theta -0.057 Vega 0.007 Open interest 5 Model this call Put · $130 In the money Snapshot session Unknown Last — Breakeven — Implied vol 131.9% Delta -0.943 ≈94% ITM Gamma 0.007 Theta -0.156 Vega 0.014 Open interest 0 Model this put
6	6	130.1%	0.033	$0.07		—	-0.947	146%	—	0
Call · $135 Snapshot session Jun 26, 2026 Last $0.07 Breakeven $135.07 Implied vol 130.1% Delta 0.033 ≈3% ITM Gamma 0.005 Theta -0.104 Vega 0.007 Open interest 6 Model this call Put · $135 In the money Snapshot session Unknown Last — Breakeven — Implied vol 146% Delta -0.947 ≈95% ITM Gamma 0.006 Theta -0.162 Vega 0.015 Open interest 0 Model this put
0	4	131.9%	0.021	$0.07		—	-0.961	152.8%	—	0
Call · $140 Snapshot session Jun 29, 2026 Last $0.07 Breakeven $140.07 Implied vol 131.9% Delta 0.021 ≈2% ITM Gamma 0.003 Theta -0.072 Vega 0.008 Open interest 0 Model this call Put · $140 In the money Snapshot session Unknown Last — Breakeven — Implied vol 152.8% Delta -0.961 ≈96% ITM Gamma 0.005 Theta -0.133 Vega 0.014 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 26, 2026–Aug 14, 2026; 17 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 947484 CUSIP G0450A105 13F (30d) 853 filings 808 filers Visit website Investor relations