SPMB · State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF ETF

Alerts for SPMB

$21.87 +0.01 (+0.05%) At close · Sep 4

Options Chain

Underlying $21.87 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 38 contracts · mixed daily-bar sessions · Aug 24, 2026; 37 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

$23.00

$1.13 above spot

ATM implied vol

30.4%

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 Nov 20 76d Feb 19 167d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$7.60	$10.20	—		—	$0.00	$1.20	—	—	—	—
Call · $13 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.781 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $13 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.873 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$6.60	$9.20	—		—	$0.00	$1.20	—	—	—	—
Call · $14 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.779 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $14 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.765 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$5.60	$8.20	—		—	$0.00	$1.20	—	—	—	—
Call · $15 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.962 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 19:59:33.575 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	72.2%	0.991	$4.60	$7.20	—		—	$0.00	$1.20	—	—	—	—
Call · $16 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.605 UTC Last — Breakeven — Implied vol 72.2% Delta 0.991 ≈99% ITM Gamma 0.008 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 19:59:33.471 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	58.5%	0.991	$3.60	$6.20	—		—	$0.00	$1.20	—	—	—	—
Call · $17 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.775 UTC Last — Breakeven — Implied vol 58.5% Delta 0.991 ≈99% ITM Gamma 0.011 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 19:59:33.275 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	45.5%	0.99	$2.60	$5.20	—		—	$0.00	$1.20	—	—	—	—
Call · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.773 UTC Last — Breakeven — Implied vol 45.5% Delta 0.99 ≈99% ITM Gamma 0.014 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 19:59:33.165 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	33.3%	0.989	$1.60	$4.20	—		—	$0.00	$1.20	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:28.804 UTC Last — Breakeven — Implied vol 33.3% Delta 0.989 ≈99% ITM Gamma 0.021 Theta -0.003 Vega 0.001 Open interest — OI effective date — Model this call Put · $19 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.974 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	30.4%	0.946	$0.65	$3.20	—		—	$0.00	$1.20	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.769 UTC Last — Breakeven — Implied vol 30.4% Delta 0.946 ≈95% ITM Gamma 0.087 Theta -0.007 Vega 0.005 Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.776 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$0.00	$1.20	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.697 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 19:59:32.665 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $21.87
—	—	—	—	$0.00	$1.20	—		—	$0.00	$1.35	—	—	—	—
Call · $22 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.420 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $22 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:56.060 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
50	50	—	—	$0.00	$0.35	$0.05		—	$0.00	$2.40	—	—	—	—
Call · $23 Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:59:32.674 UTC Last $0.05 Breakeven $23.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 50 OI effective date Sep 3, 2026 Model this call Put · $23 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:52.960 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$0.85	$3.40	-0.948	29.4%	—	—
Call · $24 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.872 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 19:59:58.523 UTC Last — Breakeven — Implied vol 29.4% Delta -0.948 ≈95% ITM Gamma 0.088 Theta -0.003 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$1.85	$4.40	-0.958	39.8%	—	—
Call · $25 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.997 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 19:59:58.372 UTC Last — Breakeven — Implied vol 39.8% Delta -0.958 ≈96% ITM Gamma 0.055 Theta -0.003 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$2.85	$5.40	-0.963	49.5%	—	—
Call · $26 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.174 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 19:59:58.524 UTC Last — Breakeven — Implied vol 49.5% Delta -0.963 ≈96% ITM Gamma 0.039 Theta -0.004 Vega 0.003 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$3.80	$6.40	-0.992	45.6%	—	—
Call · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.365 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 19:59:58.524 UTC Last — Breakeven — Implied vol 45.6% Delta -0.992 ≈99% ITM Gamma 0.012 Theta 0.001 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$4.80	$7.40	-0.991	53.8%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.475 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 19:59:58.524 UTC Last — Breakeven — Implied vol 53.8% Delta -0.991 ≈99% ITM Gamma 0.011 Theta 0.001 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$5.80	$8.40	-0.991	61.7%	—	—
Call · $29 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.665 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 19:59:58.525 UTC Last — Breakeven — Implied vol 61.7% Delta -0.991 ≈99% ITM Gamma 0.01 Theta 0 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$6.80	$9.40	-0.99	69.4%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.774 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 19:59:58.372 UTC Last — Breakeven — Implied vol 69.4% Delta -0.99 ≈99% ITM Gamma 0.009 Theta 0 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.20	—		—	$7.80	$10.40	-0.99	76.8%	—	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:59:55.224 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 19:59:58.372 UTC Last — Breakeven — Implied vol 76.8% Delta -0.99 ≈99% ITM Gamma 0.008 Theta 0 Vega 0.001 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; 37 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.