FXB · Invesco CurrencyShares British Pound Sterling Trust

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$128.44 +0.60 (+0.47%) At close · Jul 29

Market Cap

$83.49M

650,000

Options Chain

15-min delayed Underlying $128.44 · at close Jul 29, 2026 Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 42 contracts

Put / call OI

0.86

Balanced positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$129.00

$0.56 above spot

ATM implied vol

market's expected move

Open interest by strike

Calls Puts

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Dec 18 141d Mar 19 232d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	-0.085	23.2%	—	0
Call · $119 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $119 Last — Breakeven — Implied vol 23.2% Delta -0.085 ≈8% ITM Gamma 0.021 Theta -0.025 Vega 0.053 Open interest 0 Model this put
0	—	—	—	—		—	-0.113	23.6%	—	0
Call · $120 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $120 Last — Breakeven — Implied vol 23.6% Delta -0.113 ≈11% ITM Gamma 0.026 Theta -0.032 Vega 0.053 Open interest 0 Model this put
0	—	—	—	—		—	-0.121	21.7%	—	0
Call · $121 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $121 Last — Breakeven — Implied vol 21.7% Delta -0.121 ≈12% ITM Gamma 0.03 Theta -0.031 Vega 0.054 Open interest 0 Model this put
0	—	—	—	—		—	-0.109	17.4%	—	0
Call · $122 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $122 Last — Breakeven — Implied vol 17.4% Delta -0.109 ≈11% ITM Gamma 0.034 Theta -0.023 Vega 0.054 Open interest 0 Model this put
0	—	—	—	—		—	-0.146	17.2%	—	0
Call · $123 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $123 Last — Breakeven — Implied vol 17.2% Delta -0.146 ≈15% ITM Gamma 0.042 Theta -0.027 Vega 0.081 Open interest 0 Model this put
0	—	—	—	—		$0.15	-0.135	13.5%	1	1
Call · $124 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $124 Last $0.15 Breakeven $123.85 Implied vol 13.5% Delta -0.135 ≈14% ITM Gamma 0.051 Theta -0.02 Vega 0.081 Open interest 1 Model this put
0	—	—	—	—		$0.20	-0.256	17.7%	1	1
Call · $125 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $125 Last $0.20 Breakeven $124.80 Implied vol 17.7% Delta -0.256 ≈26% ITM Gamma 0.057 Theta -0.039 Vega 0.107 Open interest 1 Model this put
1	1	—	—	$2.89		—	-0.218	10.6%	—	0
Call · $126 In the money Last $2.89 Breakeven $128.89 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $126 Last — Breakeven — Implied vol 10.6% Delta -0.218 ≈22% ITM Gamma 0.089 Theta -0.022 Vega 0.107 Open interest 0 Model this put
1	1	0.1%	0.999	$2.85		—	-0.299	9.4%	—	0
Call · $127 In the money Last $2.85 Breakeven $129.85 Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 1 Model this call Put · $127 Last — Breakeven — Implied vol 9.4% Delta -0.299 ≈30% ITM Gamma 0.118 Theta -0.022 Vega 0.108 Open interest 0 Model this put
0	—	2.8%	0.734	—		$0.75	-0.436	11.2%	7	13
Call · $128 In the money Last — Breakeven — Implied vol 2.8% Delta 0.734 ≈73% ITM Gamma 0.372 Theta -0.01 Vega 0.102 Open interest 0 Model this call Put · $128 Last $0.75 Breakeven $127.25 Implied vol 11.2% Delta -0.436 ≈44% ITM Gamma 0.112 Theta -0.029 Vega 0.125 Open interest 13 Model this put
Underlying $128.44
3	1	6.5%	0.417	$0.71		$1.10	-0.552	10.4%	1	4
Call · $129 Last $0.71 Breakeven $129.71 Implied vol 6.5% Delta 0.417 ≈42% ITM Gamma 0.191 Theta -0.02 Vega 0.128 Open interest 3 Model this call Put · $129 In the money Last $1.10 Breakeven $127.90 Implied vol 10.4% Delta -0.552 ≈55% ITM Gamma 0.122 Theta -0.027 Vega 0.127 Open interest 4 Model this put
12	10	6.5%	0.245	$0.33		—	-0.68	9.8%	—	0
Call · $130 Last $0.33 Breakeven $130.33 Implied vol 6.5% Delta 0.245 ≈24% ITM Gamma 0.154 Theta -0.016 Vega 0.088 Open interest 12 Model this call Put · $130 In the money Last — Breakeven — Implied vol 9.8% Delta -0.68 ≈68% ITM Gamma 0.119 Theta -0.022 Vega 0.112 Open interest 0 Model this put
1	1	8.4%	0.186	$0.55		—	-0.698	14.4%	—	0
Call · $131 Last $0.55 Breakeven $131.55 Implied vol 8.4% Delta 0.186 ≈19% ITM Gamma 0.1 Theta -0.017 Vega 0.089 Open interest 1 Model this call Put · $131 In the money Last — Breakeven — Implied vol 14.4% Delta -0.698 ≈70% ITM Gamma 0.078 Theta -0.033 Vega 0.112 Open interest 0 Model this put
3	3	12.2%	0.196	$0.35		—	-0.804	12.6%	—	0
Call · $132 Last $0.35 Breakeven $132.35 Implied vol 12.2% Delta 0.196 ≈20% ITM Gamma 0.071 Theta -0.025 Vega 0.088 Open interest 3 Model this call Put · $132 In the money Last — Breakeven — Implied vol 12.6% Delta -0.804 ≈80% ITM Gamma 0.073 Theta -0.022 Vega 0.086 Open interest 0 Model this put
0	—	14.3%	0.173	—		—	-0.785	17.3%	—	0
Call · $133 Last — Breakeven — Implied vol 14.3% Delta 0.173 ≈17% ITM Gamma 0.056 Theta -0.027 Vega 0.088 Open interest 0 Model this call Put · $133 In the money Last — Breakeven — Implied vol 17.3% Delta -0.785 ≈78% ITM Gamma 0.055 Theta -0.033 Vega 0.086 Open interest 0 Model this put
1	1	34.9%	0.332	$0.15		—	-0.848	16.5%	—	0
Call · $134 Last $0.15 Breakeven $134.15 Implied vol 34.9% Delta 0.332 ≈33% ITM Gamma 0.033 Theta -0.092 Vega 0.113 Open interest 1 Model this call Put · $134 In the money Last — Breakeven — Implied vol 16.5% Delta -0.848 ≈85% ITM Gamma 0.048 Theta -0.024 Vega 0.084 Open interest 0 Model this put
0	—	24.1%	0.215	—		—	-0.861	18.5%	—	0
Call · $135 Last — Breakeven — Implied vol 24.1% Delta 0.215 ≈21% ITM Gamma 0.038 Theta -0.051 Vega 0.088 Open interest 0 Model this call Put · $135 In the money Last — Breakeven — Implied vol 18.5% Delta -0.861 ≈86% ITM Gamma 0.04 Theta -0.026 Vega 0.082 Open interest 0 Model this put
0	—	18%	0.108	—		—	-0.871	20.3%	—	0
Call · $136 Last — Breakeven — Implied vol 18% Delta 0.108 ≈11% ITM Gamma 0.032 Theta -0.024 Vega 0.059 Open interest 0 Model this call Put · $136 In the money Last — Breakeven — Implied vol 20.3% Delta -0.871 ≈87% ITM Gamma 0.035 Theta -0.027 Vega 0.058 Open interest 0 Model this put
0	—	19.7%	0.101	—		—	-0.879	21.9%	—	0
Call · $137 Last — Breakeven — Implied vol 19.7% Delta 0.101 ≈10% ITM Gamma 0.028 Theta -0.025 Vega 0.06 Open interest 0 Model this call Put · $137 In the money Last — Breakeven — Implied vol 21.9% Delta -0.879 ≈88% ITM Gamma 0.031 Theta -0.028 Vega 0.058 Open interest 0 Model this put
0	—	21.4%	0.094	—		—	-0.887	23.6%	—	0
Call · $138 Last — Breakeven — Implied vol 21.4% Delta 0.094 ≈9% ITM Gamma 0.025 Theta -0.026 Vega 0.06 Open interest 0 Model this call Put · $138 In the money Last — Breakeven — Implied vol 23.6% Delta -0.887 ≈89% ITM Gamma 0.027 Theta -0.029 Vega 0.058 Open interest 0 Model this put
0	—	23%	0.089	—		—	-0.922	22.6%	—	0
Call · $139 Last — Breakeven — Implied vol 23% Delta 0.089 ≈9% ITM Gamma 0.022 Theta -0.027 Vega 0.06 Open interest 0 Model this call Put · $139 In the money Last — Breakeven — Implied vol 22.6% Delta -0.922 ≈92% ITM Gamma 0.022 Theta -0.02 Vega 0.055 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1353611 CUSIP 46138M109 13F (30d) 11 filings 11 filers