PSK · State Street SPDR Bloomberg International Treasury Bond ETF

Track PSK — free

$29.40 -0.23 (-0.78%) At close · Sep 1

Rebalance outlook locked

Options Chain

Underlying $29.40 · at close Sep 1, 2026 Options Calculator

Positioning

Sep 18, 2026 · 16 days to expiry · 38 contracts · mixed daily-bar sessions · Jul 17, 2026; 37 unknown

Put / call OI

0.00

Call-heavy positioning

Open interest

401

as of Aug 31, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$32.00

$2.60 above spot

ATM implied vol

19%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 16d Oct 16 44d Jan 15 135d Apr 16 226d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	89.7%	0.971	$7.10	$9.90	—		—	$0.00	$1.30	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 89.7% Delta 0.971 ≈97% ITM Gamma 0.012 Theta -0.014 Vega 0.004 Open interest — OI effective date — Model this call Put · $21 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	78.8%	0.968	$6.10	$8.90	—		—	$0.00	$1.30	—	—	—	—
Call · $22 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 78.8% Delta 0.968 ≈97% ITM Gamma 0.015 Theta -0.013 Vega 0.004 Open interest — OI effective date — Model this call Put · $22 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	68.3%	0.964	$5.10	$7.90	—		—	$0.00	$1.30	—	—	—	—
Call · $23 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 68.3% Delta 0.964 ≈96% ITM Gamma 0.019 Theta -0.013 Vega 0.005 Open interest — OI effective date — Model this call Put · $23 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	58.1%	0.959	$4.10	$6.90	—		—	$0.00	$1.30	—	—	—	—
Call · $24 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 58.1% Delta 0.959 ≈96% ITM Gamma 0.024 Theta -0.012 Vega 0.005 Open interest — OI effective date — Model this call Put · $24 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	48.2%	0.953	$3.10	$5.90	—		—	$0.00	$1.30	—	—	—	—
Call · $25 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 48.2% Delta 0.953 ≈95% ITM Gamma 0.033 Theta -0.012 Vega 0.006 Open interest — OI effective date — Model this call Put · $25 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	38.4%	0.944	$2.10	$4.90	—		—	$0.00	$1.30	—	—	—	—
Call · $26 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 38.4% Delta 0.944 ≈94% ITM Gamma 0.048 Theta -0.011 Vega 0.007 Open interest — OI effective date — Model this call Put · $26 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	28.8%	0.929	$1.10	$3.90	—		—	$0.00	$1.30	—	—	—	—
Call · $27 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 28.8% Delta 0.929 ≈93% ITM Gamma 0.076 Theta -0.01 Vega 0.008 Open interest — OI effective date — Model this call Put · $27 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	19%	0.902	$0.20	$2.80	—		—	$0.00	$1.30	—	—	—	—
Call · $28 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 19% Delta 0.902 ≈90% ITM Gamma 0.149 Theta -0.009 Vega 0.011 Open interest — OI effective date — Model this call Put · $28 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.85	—		—	$0.00	$0.35	—	—	—	—
Call · $29 In the money Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $29 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $29.40
—	—	—	—	$0.00	$0.15	—		—	$0.00	$1.85	—	—	—	—
Call · $30 Daily-bar session Unknown 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 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$0.30	$2.85	-0.94	15.6%	—	—
Call · $31 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 15.6% Delta -0.94 ≈94% ITM Gamma 0.124 Theta -0.001 Vega 0.007 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$1.30	$4.00	-0.889	31.6%	—	1
Call · $32 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 31.6% Delta -0.889 ≈89% ITM Gamma 0.097 Theta -0.009 Vega 0.012 Open interest 1 OI effective date Aug 31, 2026 Model this put
—	—	—	—	$0.00	$1.30	—		—	$2.30	$5.00	-0.907	39.9%	—	—
Call · $33 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 39.9% Delta -0.907 ≈91% ITM Gamma 0.068 Theta -0.01 Vega 0.01 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$3.30	$6.00	-0.918	47.6%	—	—
Call · $34 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 47.6% Delta -0.918 ≈92% ITM Gamma 0.052 Theta -0.011 Vega 0.009 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.10	—		—	$4.30	$7.00	-0.926	54.8%	—	—
Call · $35 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 54.8% Delta -0.926 ≈93% ITM Gamma 0.041 Theta -0.011 Vega 0.009 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$5.30	$8.00	-0.932	61.6%	—	—
Call · $36 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 61.6% Delta -0.932 ≈93% ITM Gamma 0.035 Theta -0.012 Vega 0.008 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$6.30	$9.00	-0.937	68.2%	—	—
Call · $37 Daily-bar session Unknown 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 Last — Breakeven — Implied vol 68.2% Delta -0.937 ≈94% ITM Gamma 0.03 Theta -0.013 Vega 0.008 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.30	—		—	$7.30	$10.00	-0.94	74.5%	—	—
Call · $38 Daily-bar session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $38 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 74.5% Delta -0.94 ≈94% ITM Gamma 0.026 Theta -0.013 Vega 0.007 Open interest — OI effective date — Model this put
400	400	—	—	$0.00	$1.30	$0.05		—	$8.30	$11.00	-0.943	80.5%	—	—
Call · $39 Daily-bar session Jul 17, 2026 Last $0.05 Breakeven $39.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 400 OI effective date Aug 31, 2026 Model this call Put · $39 In the money Daily-bar session Unknown Last — Breakeven — Implied vol 80.5% Delta -0.943 ≈94% ITM Gamma 0.023 Theta -0.014 Vega 0.007 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 17, 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.

Key facts CIK 1064642 CUSIP 78464A516 13F (30d) 111 filings 110 filers