BWX · State Street(R) SPDR(R) Bloomberg International Treasury Bond ETF ETF

Alerts for BWX

$21.93 -0.01 (-0.05%) At close · Sep 4

Options Chain

Underlying $21.93 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 42 contracts · mixed daily-bar sessions · Aug 14, 2026; 41 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

$0.07 above spot

ATM implied vol

34.8%

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
—	—	—	—	$9.20	$10.70	—		—	$0.00	$0.75	—	—	—	—
Call · $12 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:18.852 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $12 Daily-bar session Unknown Quote as of 2026-09-04 19:55:12.480 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$8.20	$9.70	—		—	$0.00	$0.75	—	—	—	—
Call · $13 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:18.449 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 19:55:11.390 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$7.20	$8.70	—		—	$0.00	$0.75	—	—	—	—
Call · $14 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:17.913 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 19:55:10.279 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	64.2%	0.999	$6.20	$7.70	—		—	$0.00	$0.75	—	—	—	—
Call · $15 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:16.975 UTC Last — Breakeven — Implied vol 64.2% Delta 0.999 ≈100% ITM Gamma 0.001 Theta -0.002 Vega 0 Open interest — OI effective date — Model this call Put · $15 Daily-bar session Unknown Quote as of 2026-09-04 19:55:09.274 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$5.20	$6.70	—		—	$0.00	$0.75	—	—	—	—
Call · $16 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:15.250 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $16 Daily-bar session Unknown Quote as of 2026-09-04 19:55:08.456 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$4.30	$5.50	—		—	$0.00	$0.75	—	—	—	—
Call · $17 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:13.672 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 19:55:07.630 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$3.30	$4.50	—		—	$0.00	$0.75	—	—	—	—
Call · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.290 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $18 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.753 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$2.30	$3.50	—		—	$0.00	$0.75	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:08.712 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 19:55:04.945 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.35	$3.00	—		—	$0.00	$0.75	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:46.817 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $20 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.361 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.00	—		—	$0.00	$0.75	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:45.812 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 19:55:03.979 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $21.93
1	1	—	—	$0.00	$0.75	$0.10		—	$0.00	$0.75	—	—	—	—
Call · $22 Daily-bar session Aug 14, 2026 Quote as of 2026-09-04 19:59:59.417 UTC Last $0.10 Breakeven $22.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $22 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:46.951 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$0.00	$2.65	—	—	—	—
Call · $23 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.138 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $23 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:48.403 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$0.50	$3.70	-0.907	34.8%	—	—
Call · $24 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.579 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 19:57:37.757 UTC Last — Breakeven — Implied vol 34.8% Delta -0.907 ≈91% ITM Gamma 0.116 Theta -0.007 Vega 0.007 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$2.50	$3.70	-0.925	46.4%	—	—
Call · $25 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.316 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 19:59:33.032 UTC Last — Breakeven — Implied vol 46.4% Delta -0.925 ≈92% ITM Gamma 0.074 Theta -0.008 Vega 0.006 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$3.50	$4.70	-0.935	57%	—	—
Call · $26 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.933 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 19:59:19.280 UTC Last — Breakeven — Implied vol 57% Delta -0.935 ≈94% ITM Gamma 0.054 Theta -0.009 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$4.50	$5.70	-0.942	66.9%	—	—
Call · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.879 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 19:58:40.509 UTC Last — Breakeven — Implied vol 66.9% Delta -0.942 ≈94% ITM Gamma 0.042 Theta -0.01 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$5.30	$6.80	-0.981	60.3%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:55:08.694 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 19:59:40.741 UTC Last — Breakeven — Implied vol 60.3% Delta -0.981 ≈98% ITM Gamma 0.018 Theta -0.002 Vega 0.002 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$6.30	$7.80	-0.982	68.2%	—	—
Call · $29 Daily-bar session Unknown Quote as of 2026-09-04 19:55:09.670 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 19:59:23.855 UTC Last — Breakeven — Implied vol 68.2% Delta -0.982 ≈98% ITM Gamma 0.016 Theta -0.002 Vega 0.002 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$7.30	$8.80	-0.983	75.9%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.665 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 19:58:51.543 UTC Last — Breakeven — Implied vol 75.9% Delta -0.983 ≈98% ITM Gamma 0.014 Theta -0.002 Vega 0.002 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$8.30	$9.80	—	—	—	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.711 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 19:59:00.072 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$9.30	$10.80	—	—	—	—
Call · $32 Daily-bar session Unknown Quote as of 2026-09-04 19:55:12.759 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 19:58:22.483 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 · Aug 14, 2026; 41 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.