PZA · Invesco National AMT-Free Municipal Bond ETF ETF

Alerts for PZA

$22.42 +0.02 (+0.09%) At close · Sep 4

Options Chain

Underlying $22.42 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 34 contracts · mixed daily-bar sessions · Aug 24, 2026–Sep 3, 2026; 32 unknown

Put / call OI

0.00

Call-heavy positioning

Open interest

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$22.00

$0.42 below spot

ATM implied vol

10.6%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 13d Oct 16 41d Jan 15 132d Apr 16 223d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$6.00	$8.90	—		—	$0.00	$1.35	—	—	—	—
Call · $15 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.072 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $15 Daily-bar session Unknown Quote as of 2026-09-04 19:57:33.143 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	77%	0.992	$5.00	$7.90	—		—	$0.00	$1.35	—	—	—	—
Call · $16 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.207 UTC Last — Breakeven — Implied vol 77% Delta 0.992 ≈99% ITM Gamma 0.007 Theta -0.004 Vega 0.001 Open interest — OI effective date — Model this call Put · $16 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.159 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	63.3%	0.992	$4.00	$6.90	—		—	$0.00	$1.35	—	—	—	—
Call · $17 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.064 UTC Last — Breakeven — Implied vol 63.3% Delta 0.992 ≈99% ITM Gamma 0.009 Theta -0.004 Vega 0.001 Open interest — OI effective date — Model this call Put · $17 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.143 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	50.5%	0.991	$3.00	$5.90	—		—	$0.00	$1.35	—	—	—	—
Call · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.191 UTC Last — Breakeven — Implied vol 50.5% Delta 0.991 ≈99% ITM Gamma 0.011 Theta -0.004 Vega 0.001 Open interest — OI effective date — Model this call Put · $18 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.132 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	50.1%	0.965	$2.05	$4.90	—		—	$0.00	$1.35	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.174 UTC Last — Breakeven — Implied vol 50.1% Delta 0.965 ≈97% ITM Gamma 0.036 Theta -0.008 Vega 0.003 Open interest — OI effective date — Model this call Put · $19 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.117 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	36.7%	0.956	$1.05	$3.90	—		—	$0.00	$1.35	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.148 UTC Last — Breakeven — Implied vol 36.7% Delta 0.956 ≈96% ITM Gamma 0.06 Theta -0.008 Vega 0.004 Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.089 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.90	—		—	$0.00	$1.35	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.055 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $21 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.092 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	1	—	—	$0.00	$1.90	$0.50		—	$0.00	$1.35	—	—	—	—
Call · $22 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:55:01.080 UTC Last $0.50 Breakeven $22.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $22 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.101 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $22.42
2	1	—	—	$0.00	$1.35	$0.05		—	$0.50	$0.65	-0.885	10.6%	—	—
Call · $23 Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:55:01.106 UTC Last $0.05 Breakeven $23.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $23 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.084 UTC Last — Breakeven — Implied vol 10.6% Delta -0.885 ≈89% ITM Gamma 0.432 Theta -0.001 Vega 0.008 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$1.50	$1.65	-0.937	22.9%	—	—
Call · $24 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.097 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $24 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.127 UTC Last — Breakeven — Implied vol 22.9% Delta -0.937 ≈94% ITM Gamma 0.129 Theta -0.002 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$2.50	$2.65	-0.952	33.6%	—	—
Call · $25 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.112 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $25 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.154 UTC Last — Breakeven — Implied vol 33.6% Delta -0.952 ≈95% ITM Gamma 0.07 Theta -0.003 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$3.50	$3.70	-0.938	49.1%	—	—
Call · $26 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.122 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $26 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.061 UTC Last — Breakeven — Implied vol 49.1% Delta -0.938 ≈94% ITM Gamma 0.059 Theta -0.007 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$4.50	$4.70	-0.946	58.9%	—	—
Call · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.138 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $27 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.196 UTC Last — Breakeven — Implied vol 58.9% Delta -0.946 ≈95% ITM Gamma 0.044 Theta -0.008 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$5.50	$5.70	-0.951	68.2%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.058 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $28 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.201 UTC Last — Breakeven — Implied vol 68.2% Delta -0.951 ≈95% ITM Gamma 0.035 Theta -0.009 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$6.50	$6.70	-0.955	76.9%	—	—
Call · $29 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.164 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $29 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.068 UTC Last — Breakeven — Implied vol 76.9% Delta -0.955 ≈95% ITM Gamma 0.029 Theta -0.009 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$7.50	$7.70	-0.958	85.2%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.169 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $30 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.076 UTC Last — Breakeven — Implied vol 85.2% Delta -0.958 ≈96% ITM Gamma 0.025 Theta -0.01 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.35	—		—	$8.50	$8.70	-0.96	93.2%	—	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.179 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $31 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.213 UTC Last — Breakeven — Implied vol 93.2% Delta -0.96 ≈96% ITM Gamma 0.022 Theta -0.01 Vega 0.004 Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Aug 24, 2026–Sep 3, 2026; 32 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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.