SPTL · State Street(R) SPDR(R) Portfolio Long Term Treasury ETF ETF

Alerts for SPTL

$25.12 +0.05 (+0.20%) At close · Sep 4

Options Chain

Underlying $25.12 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 12 days to expiry · 42 contracts · mixed daily-bar sessions · Jul 16, 2026–Sep 3, 2026; 31 unknown

Put / call OI

0.32

Call-heavy positioning

Open interest

132

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$25.00

$0.12 below spot

ATM implied vol

12%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 12d Oct 16 40d Nov 20 75d Feb 19 166d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$8.40	$9.90	—		$0.10	$0.00	$1.00	—	—	1	1
Call · $16 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.474 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $16 Daily-bar session Jul 16, 2026 Quote as of 2026-09-04 19:59:53.112 UTC Last $0.10 Breakeven $15.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$7.40	$8.90	—		—	$0.00	$1.00	—	—	—	—
Call · $17 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.424 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $17 Daily-bar session Unknown Quote as of 2026-09-04 19:59:53.127 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	77.3%	0.993	$6.40	$7.90	—		—	$0.00	$1.00	—	—	—	—
Call · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.380 UTC Last — Breakeven — Implied vol 77.3% Delta 0.993 ≈99% ITM Gamma 0.006 Theta -0.005 Vega 0.001 Open interest — OI effective date — Model this call Put · $18 Daily-bar session Unknown Quote as of 2026-09-04 19:59:53.115 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	64.7%	0.993	$5.40	$6.90	—		—	$0.00	$1.00	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.342 UTC Last — Breakeven — Implied vol 64.7% Delta 0.993 ≈99% ITM Gamma 0.007 Theta -0.004 Vega 0.001 Open interest — OI effective date — Model this call Put · $19 Daily-bar session Unknown Quote as of 2026-09-04 19:59:53.111 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	74.6%	0.961	$4.60	$5.80	—		—	$0.00	$1.00	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.305 UTC Last — Breakeven — Implied vol 74.6% Delta 0.961 ≈96% ITM Gamma 0.025 Theta -0.014 Vega 0.004 Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-04 19:59:02.185 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	61%	0.954	$3.60	$4.80	—		—	$0.00	$1.00	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.271 UTC Last — Breakeven — Implied vol 61% Delta 0.954 ≈95% ITM Gamma 0.035 Theta -0.013 Vega 0.004 Open interest — OI effective date — Model this call Put · $21 Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.965 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	47.7%	0.944	$2.10	$4.30	—		—	$0.00	$1.00	—	—	—	—
Call · $22 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.189 UTC Last — Breakeven — Implied vol 47.7% Delta 0.944 ≈94% ITM Gamma 0.052 Theta -0.012 Vega 0.005 Open interest — OI effective date — Model this call Put · $22 Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.965 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	30%	0.953	$1.80	$2.55	—		—	$0.00	$1.00	—	—	—	—
Call · $23 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.133 UTC Last — Breakeven — Implied vol 30% Delta 0.953 ≈95% ITM Gamma 0.072 Theta -0.008 Vega 0.005 Open interest — OI effective date — Model this call Put · $23 Daily-bar session Unknown Quote as of 2026-09-04 19:57:04.518 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	21.2%	0.892	$0.15	$2.25	$1.12		$0.04	$0.00	$1.00	—	—	2	2
Call · $24 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:59:51.101 UTC Last $1.12 Breakeven $25.12 Implied vol 21.2% Delta 0.892 ≈89% ITM Gamma 0.192 Theta -0.01 Vega 0.009 Open interest — OI effective date — Model this call Put · $24 Daily-bar session Aug 18, 2026 Quote as of 2026-09-04 19:55:01.382 UTC Last $0.04 Breakeven $23.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this put
21	3	12%	0.613	$0.25	$0.35	$0.25		$0.14	$0.00	$0.35	—	—	2	29
Call · $25 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:57:01.668 UTC Last $0.25 Breakeven $25.25 Implied vol 12% Delta 0.613 ≈61% ITM Gamma 0.702 Theta -0.01 Vega 0.017 Open interest 21 OI effective date Sep 3, 2026 Model this call Put · $25 Daily-bar session Sep 2, 2026 Quote as of 2026-09-04 19:57:01.681 UTC Last $0.14 Breakeven $24.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 29 OI effective date Sep 3, 2026 Model this put
Underlying $25.12
61	1	—	—	$0.00	$0.05	$0.03		$0.70	$0.00	$1.95	—	—	3	—
Call · $26 Daily-bar session Aug 25, 2026 Quote as of 2026-09-04 13:54:53.800 UTC Last $0.03 Breakeven $26.03 Implied vol — Delta — Gamma — Theta — Vega — Open interest 61 OI effective date Sep 3, 2026 Model this call Put · $26 In the money Daily-bar session Aug 19, 2026 Quote as of 2026-09-04 19:59:42.136 UTC Last $0.70 Breakeven $25.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$0.80	$2.95	-0.942	24.6%	—	—
Call · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.965 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 19:59:51.113 UTC Last — Breakeven — Implied vol 24.6% Delta -0.942 ≈94% ITM Gamma 0.104 Theta -0.003 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$1.80	$4.00	-0.93	39.2%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.965 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 19:59:51.144 UTC Last — Breakeven — Implied vol 39.2% Delta -0.93 ≈93% ITM Gamma 0.075 Theta -0.007 Vega 0.006 Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$0.20	$0.15		—	$3.30	$4.50	-0.941	48.9%	—	—
Call · $29 Daily-bar session Jul 24, 2026 Quote as of 2026-09-04 19:59:43.338 UTC Last $0.15 Breakeven $29.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $29 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.224 UTC Last — Breakeven — Implied vol 48.9% Delta -0.941 ≈94% ITM Gamma 0.053 Theta -0.008 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$4.30	$5.50	-0.948	58.1%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.965 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 19:59:51.288 UTC Last — Breakeven — Implied vol 58.1% Delta -0.948 ≈95% ITM Gamma 0.04 Theta -0.009 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$5.10	$6.60	-0.99	48.6%	—	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.685 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 19:59:51.317 UTC Last — Breakeven — Implied vol 48.6% Delta -0.99 ≈99% ITM Gamma 0.012 Theta 0.001 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$6.10	$7.60	-0.99	55.9%	—	—
Call · $32 Daily-bar session Unknown Quote as of 2026-09-04 19:59:53.112 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $32 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.355 UTC Last — Breakeven — Implied vol 55.9% Delta -0.99 ≈99% ITM Gamma 0.011 Theta 0 Vega 0.001 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.00	—		—	$7.10	$8.60	-0.99	63.1%	—	—
Call · $33 Daily-bar session Unknown Quote as of 2026-09-04 19:59:53.114 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $33 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.397 UTC Last — Breakeven — Implied vol 63.1% Delta -0.99 ≈99% ITM Gamma 0.009 Theta 0 Vega 0.001 Open interest — OI effective date — Model this put
2	1	—	—	$0.00	$1.00	$0.05		—	$8.10	$9.60	-0.99	70%	—	—
Call · $34 Daily-bar session Jul 30, 2026 Quote as of 2026-09-04 19:59:53.127 UTC Last $0.05 Breakeven $34.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $34 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.449 UTC Last — Breakeven — Implied vol 70% Delta -0.99 ≈99% ITM Gamma 0.009 Theta 0 Vega 0.001 Open interest — OI effective date — Model this put
7	2	—	—	$0.00	$1.00	$0.04		—	$8.80	$11.00	—	—	—	—
Call · $35 Daily-bar session Jul 30, 2026 Quote as of 2026-09-04 19:59:53.127 UTC Last $0.04 Breakeven $35.04 Implied vol — Delta — Gamma — Theta — Vega — Open interest 7 OI effective date Sep 3, 2026 Model this call Put · $35 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.488 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
8	2	—	—	$0.00	$1.00	$0.05		—	$9.80	$12.00	—	—	—	—
Call · $36 Daily-bar session Jul 31, 2026 Quote as of 2026-09-04 19:59:53.115 UTC Last $0.05 Breakeven $36.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 OI effective date Sep 3, 2026 Model this call Put · $36 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:51.502 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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 · Jul 16, 2026–Sep 3, 2026; 31 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.