SPTI · State Street(R) SPDR(R) Portfolio Intermediate Term Treasury ETF ETF

Alerts for SPTI

$27.90 -0.01 (-0.04%) At close · Sep 4

Options Chain

Underlying $27.90 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 38 contracts · mixed daily-bar sessions · Aug 21, 2026; 37 unknown

Put / call OI

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open-interest date unavailable

Open interest

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open-interest date unavailable

Volume

—

dated and unknown daily-bar sessions

ATM implied vol

4.3%

market's expected move

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
—	—	—	—	$7.50	$10.40	—		—	$0.00	$0.10	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.709 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $19 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.065 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	84.2%	0.986	$6.50	$9.40	—		—	$0.00	$0.10	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.685 UTC Last — Breakeven — Implied vol 84.2% Delta 0.986 ≈99% ITM Gamma 0.008 Theta -0.008 Vega 0.002 Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.065 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	72.7%	0.984	$5.50	$8.40	—		—	$0.00	$0.10	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.603 UTC Last — Breakeven — Implied vol 72.7% Delta 0.984 ≈98% ITM Gamma 0.01 Theta -0.008 Vega 0.002 Open interest — OI effective date — Model this call Put · $21 Daily-bar session Unknown Quote as of 2026-09-04 19:55:03.683 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	61.8%	0.983	$4.50	$7.40	—		—	$0.00	$0.10	—	—	—	—
Call · $22 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.511 UTC Last — Breakeven — Implied vol 61.8% Delta 0.983 ≈98% ITM Gamma 0.013 Theta -0.008 Vega 0.002 Open interest — OI effective date — Model this call Put · $22 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.292 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	51.2%	0.98	$3.50	$6.40	—		—	$0.00	$0.10	—	—	—	—
Call · $23 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.449 UTC Last — Breakeven — Implied vol 51.2% Delta 0.98 ≈98% ITM Gamma 0.018 Theta -0.007 Vega 0.003 Open interest — OI effective date — Model this call Put · $23 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.062 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	41%	0.977	$2.50	$5.40	—		—	$0.00	$0.10	—	—	—	—
Call · $24 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.384 UTC Last — Breakeven — Implied vol 41% Delta 0.977 ≈98% ITM Gamma 0.025 Theta -0.007 Vega 0.003 Open interest — OI effective date — Model this call Put · $24 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.292 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	31.1%	0.973	$1.50	$4.40	—		—	$0.00	$0.10	—	—	—	—
Call · $25 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.288 UTC Last — Breakeven — Implied vol 31.1% Delta 0.973 ≈97% ITM Gamma 0.039 Theta -0.006 Vega 0.003 Open interest — OI effective date — Model this call Put · $25 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.176 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	21.4%	0.964	$0.50	$3.40	—		—	$0.00	$0.10	—	—	—	—
Call · $26 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.190 UTC Last — Breakeven — Implied vol 21.4% Delta 0.964 ≈96% ITM Gamma 0.07 Theta -0.006 Vega 0.004 Open interest — OI effective date — Model this call Put · $26 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.292 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.85	$1.00	—		—	$0.00	$0.10	—	—	—	—
Call · $27 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:30.659 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.292 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $27.90
—	—	—	—	$0.00	$0.10	—		—	$0.05	$0.20	-0.61	4.3%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:59:40.462 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 19:59:01.946 UTC Last — Breakeven — Implied vol 4.3% Delta -0.61 ≈61% ITM Gamma 1.71 Theta -0.002 Vega 0.02 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		$0.95	$1.00	$1.20	-0.9	15.3%	1	—
Call · $29 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.293 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 Aug 21, 2026 Quote as of 2026-09-04 19:55:01.293 UTC Last $0.95 Breakeven $28.05 Implied vol 15.3% Delta -0.9 ≈90% ITM Gamma 0.218 Theta -0.003 Vega 0.009 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		—	$2.00	$2.20	-0.932	25%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:58:30.432 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 19:55:06.939 UTC Last — Breakeven — Implied vol 25% Delta -0.932 ≈93% ITM Gamma 0.1 Theta -0.004 Vega 0.007 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$3.00	$3.20	-0.945	33.8%	—	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.421 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 19:55:08.580 UTC Last — Breakeven — Implied vol 33.8% Delta -0.945 ≈95% ITM Gamma 0.062 Theta -0.005 Vega 0.006 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$4.00	$4.20	-0.953	42%	—	—
Call · $32 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.093 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 19:55:09.555 UTC Last — Breakeven — Implied vol 42% Delta -0.953 ≈95% ITM Gamma 0.044 Theta -0.005 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$5.00	$5.20	-0.958	49.7%	—	—
Call · $33 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.123 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 19:55:10.400 UTC Last — Breakeven — Implied vol 49.7% Delta -0.958 ≈96% ITM Gamma 0.034 Theta -0.006 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$6.00	$6.20	-0.962	57%	—	—
Call · $34 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.849 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $34 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.842 UTC Last — Breakeven — Implied vol 57% Delta -0.962 ≈96% ITM Gamma 0.028 Theta -0.006 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$7.00	$7.20	-0.965	64%	—	—
Call · $35 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.293 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $35 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.391 UTC Last — Breakeven — Implied vol 64% Delta -0.965 ≈96% ITM Gamma 0.023 Theta -0.007 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$8.00	$8.20	-0.967	70.8%	—	—
Call · $36 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.293 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $36 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.602 UTC Last — Breakeven — Implied vol 70.8% Delta -0.967 ≈97% ITM Gamma 0.02 Theta -0.007 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$9.00	$9.20	-0.968	77.3%	—	—
Call · $37 Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.293 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $37 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.784 UTC Last — Breakeven — Implied vol 77.3% Delta -0.968 ≈97% ITM Gamma 0.018 Theta -0.008 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 21, 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.