ARKB · Ark 21Shares Bitcoin ETF

Track ARKB — free

$22.70 +1.27 (+5.93%) At close · Aug 19

Market Cap

$2.17B

101.19M

Options Chain

Underlying $22.70 · at close Aug 19, 2026 Options Calculator

Positioning

Aug 21, 2026 · 1 days to expiry · 42 contracts · mixed snapshot sessions · Jul 14, 2026–Aug 19, 2026; 10 unknown

Put / call OI

—

dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 1d Sep 18 29d Dec 18 120d Jan 15 148d Mar 19 211d Jan 21 519d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	18	0%	1	$9.61		—	—	—	—	0
Call · $12 In the money Snapshot session Jul 23, 2026 Last $9.61 Breakeven $21.61 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 0 Model this call Put · $12 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	14	0%	1	$8.59		—	—	—	—	0
Call · $13 In the money Snapshot session Jul 23, 2026 Last $8.59 Breakeven $21.59 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 0 Model this call Put · $13 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	12	0%	1	$7.68		—	-0.034	393.6%	—	0
Call · $14 In the money Snapshot session Jul 23, 2026 Last $7.68 Breakeven $21.68 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 0 Model this call Put · $14 Snapshot session Unknown Last — Breakeven — Implied vol 393.6% Delta -0.034 ≈3% ITM Gamma 0.011 Theta -0.126 Vega 0.001 Open interest 0 Model this put
1	2	0%	1	$6.38		$0.03	-0.045	363.8%	185	180
Call · $15 In the money Snapshot session Aug 10, 2026 Last $6.38 Breakeven $21.38 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 1 Model this call Put · $15 Snapshot session Jul 20, 2026 Last $0.03 Breakeven $14.97 Implied vol 363.8% Delta -0.045 ≈4% ITM Gamma 0.016 Theta -0.146 Vega 0.001 Open interest 180 Model this put
0	2	0%	1	$5.41		—	-0.044	300.6%	—	0
Call · $16 In the money Snapshot session Aug 10, 2026 Last $5.41 Breakeven $21.41 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $16 Snapshot session Unknown Last — Breakeven — Implied vol 300.6% Delta -0.044 ≈4% ITM Gamma 0.019 Theta -0.119 Vega 0.001 Open interest 0 Model this put
6	2	0%	1	$3.90		—	-0.042	241.5%	—	0
Call · $17 In the money Snapshot session Aug 14, 2026 Last $3.90 Breakeven $20.90 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 6 Model this call Put · $17 Snapshot session Unknown Last — Breakeven — Implied vol 241.5% Delta -0.042 ≈4% ITM Gamma 0.022 Theta -0.092 Vega 0.001 Open interest 0 Model this put
0	18	0%	1	$3.73		$0.04	-0.069	227.5%	200	220
Call · $18 In the money Snapshot session Jul 23, 2026 Last $3.73 Breakeven $21.73 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $18 Snapshot session Aug 17, 2026 Last $0.04 Breakeven $17.96 Implied vol 227.5% Delta -0.069 ≈7% ITM Gamma 0.035 Theta -0.128 Vega 0.003 Open interest 220 Model this put
3	2	0%	1	$3.50		$0.07	-0.083	184.3%	6	46
Call · $19 In the money Snapshot session Aug 19, 2026 Last $3.50 Breakeven $22.50 Implied vol 0% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 3 Model this call Put · $19 Snapshot session Aug 12, 2026 Last $0.07 Breakeven $18.93 Implied vol 184.3% Delta -0.083 ≈8% ITM Gamma 0.05 Theta -0.119 Vega 0.003 Open interest 46 Model this put
8	1	—	—	$1.95		$0.05	-0.115	152.6%	16	139
Call · $20 In the money Snapshot session Aug 19, 2026 Last $1.95 Breakeven $21.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this call Put · $20 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $19.95 Implied vol 152.6% Delta -0.115 ≈11% ITM Gamma 0.078 Theta -0.127 Vega 0.003 Open interest 139 Model this put
82	43	112.9%	0.837	$0.51		$0.03	-0.138	102%	1	13
Call · $21 In the money Snapshot session Aug 17, 2026 Last $0.51 Breakeven $21.51 Implied vol 112.9% Delta 0.837 ≈84% ITM Gamma 0.132 Theta -0.12 Vega 0.004 Open interest 82 Model this call Put · $21 Snapshot session Aug 19, 2026 Last $0.03 Breakeven $20.97 Implied vol 102% Delta -0.138 ≈14% ITM Gamma 0.131 Theta -0.096 Vega 0.004 Open interest 13 Model this put
191	204	51.4%	0.804	$0.65		$0.08	-0.221	58.1%	2	45
Call · $22 In the money Snapshot session Aug 19, 2026 Last $0.65 Breakeven $22.65 Implied vol 51.4% Delta 0.804 ≈80% ITM Gamma 0.327 Theta -0.063 Vega 0.004 Open interest 191 Model this call Put · $22 Snapshot session Aug 19, 2026 Last $0.08 Breakeven $21.92 Implied vol 58.1% Delta -0.221 ≈22% ITM Gamma 0.314 Theta -0.074 Vega 0.004 Open interest 45 Model this put
Underlying $22.70
161	124	40.7%	0.338	$0.15		$1.22	-0.581	76.2%	20	15
Call · $23 Snapshot session Aug 19, 2026 Last $0.15 Breakeven $23.15 Implied vol 40.7% Delta 0.338 ≈34% ITM Gamma 0.547 Theta -0.065 Vega 0.006 Open interest 161 Model this call Put · $23 In the money Snapshot session Aug 19, 2026 Last $1.22 Breakeven $21.78 Implied vol 76.2% Delta -0.581 ≈58% ITM Gamma 0.311 Theta -0.126 Vega 0.007 Open interest 15 Model this put
181	1	95.7%	0.224	$0.09		$1.51	—	—	1	0
Call · $24 Snapshot session Aug 19, 2026 Last $0.09 Breakeven $24.09 Implied vol 95.7% Delta 0.224 ≈22% ITM Gamma 0.19 Theta -0.124 Vega 0.005 Open interest 181 Model this call Put · $24 In the money Snapshot session Aug 19, 2026 Last $1.51 Breakeven $22.49 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
232	3	165.3%	0.23	$0.16		$2.40	-0.837	128.3%	2	2
Call · $25 Snapshot session Aug 17, 2026 Last $0.16 Breakeven $25.16 Implied vol 165.3% Delta 0.23 ≈23% ITM Gamma 0.112 Theta -0.216 Vega 0.005 Open interest 232 Model this call Put · $25 In the money Snapshot session Aug 19, 2026 Last $2.40 Breakeven $22.60 Implied vol 128.3% Delta -0.837 ≈84% ITM Gamma 0.116 Theta -0.133 Vega 0.005 Open interest 2 Model this put
414	3	136.7%	0.096	$0.05		$4.50	-0.903	137.9%	18	0
Call · $26 Snapshot session Jul 28, 2026 Last $0.05 Breakeven $26.05 Implied vol 136.7% Delta 0.096 ≈10% ITM Gamma 0.075 Theta -0.099 Vega 0.003 Open interest 414 Model this call Put · $26 In the money Snapshot session Jul 23, 2026 Last $4.50 Breakeven $21.50 Implied vol 137.9% Delta -0.903 ≈90% ITM Gamma 0.076 Theta -0.099 Vega 0.003 Open interest 0 Model this put
6	4	165.3%	0.083	$0.08		$5.50	-0.87	197.8%	14	0
Call · $27 Snapshot session Jul 14, 2026 Last $0.08 Breakeven $27.08 Implied vol 165.3% Delta 0.083 ≈8% ITM Gamma 0.056 Theta -0.108 Vega 0.003 Open interest 6 Model this call Put · $27 In the money Snapshot session Jul 23, 2026 Last $5.50 Breakeven $21.50 Implied vol 197.8% Delta -0.87 ≈87% ITM Gamma 0.065 Theta -0.177 Vega 0.003 Open interest 0 Model this put
0	—	—	—	—		$6.50	-0.953	166.4%	18	0
Call · $28 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $28 In the money Snapshot session Jul 23, 2026 Last $6.50 Breakeven $21.50 Implied vol 166.4% Delta -0.953 ≈95% ITM Gamma 0.036 Theta -0.067 Vega 0.002 Open interest 0 Model this put
0	—	—	—	—		$7.49	-0.958	189%	4	0
Call · $29 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $29 In the money Snapshot session Jul 23, 2026 Last $7.49 Breakeven $21.51 Implied vol 189% Delta -0.958 ≈96% ITM Gamma 0.029 Theta -0.071 Vega 0.002 Open interest 0 Model this put
0	—	—	—	—		$8.22	—	—	10	0
Call · $30 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 In the money Snapshot session Jul 22, 2026 Last $8.22 Breakeven $21.78 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$9.22	-0.941	257.5%	12	0
Call · $31 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $31 In the money Snapshot session Jul 22, 2026 Last $9.22 Breakeven $21.78 Implied vol 257.5% Delta -0.941 ≈94% ITM Gamma 0.028 Theta -0.126 Vega 0.002 Open interest 0 Model this put
0	—	—	—	—		$10.98	-0.945	277.6%	2	0
Call · $32 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $32 In the money Snapshot session Aug 11, 2026 Last $10.98 Breakeven $21.02 Implied vol 277.6% Delta -0.945 ≈94% ITM Gamma 0.024 Theta -0.129 Vega 0.002 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 14, 2026–Aug 19, 2026; 10 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 1869699 CUSIP 040919102 13F (30d) 106 filings 106 filers