BIL · State Street(R) SPDR(R) Bloomberg 1-3 Month T-Bill ETF ETF

Alerts for BIL

$91.45 +0.03 (+0.03%) At close · Sep 4

Options Chain

Underlying $91.45 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 50 contracts · mixed daily-bar sessions · Jul 17, 2026–Sep 4, 2026; 23 unknown

Put / call OI

0.72

Balanced positioning

Open interest

253

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$89.00

$2.45 below spot

ATM implied vol

4.1%

market's expected move

Open interest by strike

Calls Puts

100

101

102

103

104

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 13d Oct 16 41d Nov 20 76d Jan 15 132d Apr 16 223d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
2	2	52.9%	0.92	$11.40	$12.40	$11.50		$0.04	$0.00	$0.05	—	—	1	1
Call · $80 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:58:48.812 UTC Last $11.50 Breakeven $91.50 Implied vol 52.9% Delta 0.92 ≈92% ITM Gamma 0.016 Theta -0.06 Vega 0.026 Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $80 Daily-bar session Jul 17, 2026 Quote as of 2026-09-04 16:58:04.466 UTC Last $0.04 Breakeven $79.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	14	—	—	$9.80	$11.30	$10.66		—	$0.00	$0.05	—	—	—	—
Call · $81 In the money Daily-bar session Aug 27, 2026 Quote as of 2026-09-04 19:55:01.680 UTC Last $10.66 Breakeven $91.66 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $81 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.465 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	—	—	$8.80	$10.30	$9.62		—	$0.00	$0.05	—	—	—	—
Call · $82 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:57:02.043 UTC Last $9.62 Breakeven $91.62 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $82 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	18	—	—	$7.80	$9.30	$8.68		—	$0.00	$0.05	—	—	—	—
Call · $83 In the money Daily-bar session Aug 27, 2026 Quote as of 2026-09-04 19:55:01.680 UTC Last $8.68 Breakeven $91.68 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $83 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	—	—	$6.80	$8.30	$7.60		—	$0.00	$0.05	—	—	—	—
Call · $84 In the money Daily-bar session Aug 11, 2026 Quote as of 2026-09-04 19:57:02.044 UTC Last $7.60 Breakeven $91.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $84 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	20	—	—	$5.80	$7.30	$6.60		—	$0.00	$0.05	—	—	—	—
Call · $85 In the money Daily-bar session Aug 13, 2026 Quote as of 2026-09-04 19:55:01.680 UTC Last $6.60 Breakeven $91.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $85 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	4	—	—	$5.30	$5.80	$5.54		—	$0.00	$0.05	—	—	—	—
Call · $86 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:35.820 UTC Last $5.54 Breakeven $91.54 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $86 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	—	—	$4.30	$4.80	$4.55		—	$0.00	$0.05	—	—	—	—
Call · $87 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:35.640 UTC Last $4.55 Breakeven $91.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $87 Daily-bar session Unknown Quote as of 2026-09-04 17:01:49.452 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	8	12.2%	0.959	$3.30	$3.90	$3.53		$0.05	$0.00	$0.05	—	—	100	100
Call · $88 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:55:01.682 UTC Last $3.53 Breakeven $91.53 Implied vol 12.2% Delta 0.959 ≈96% ITM Gamma 0.042 Theta -0.016 Vega 0.015 Open interest — OI effective date — Model this call Put · $88 Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:55:03.012 UTC Last $0.05 Breakeven $87.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 100 OI effective date Sep 3, 2026 Model this put
8	1	—	—	$0.00	$2.60	$2.50		—	$0.00	$0.05	—	—	—	—
Call · $89 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:46:51.471 UTC Last $2.50 Breakeven $91.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 OI effective date Sep 3, 2026 Model this call Put · $89 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	4	4.7%	0.974	$1.20	$1.95	$1.65		—	$0.00	$0.05	—	—	—	—
Call · $90 In the money Daily-bar session Aug 11, 2026 Quote as of 2026-09-04 19:55:01.682 UTC Last $1.65 Breakeven $91.65 Implied vol 4.7% Delta 0.974 ≈97% ITM Gamma 0.074 Theta -0.011 Vega 0.01 Open interest — OI effective date — Model this call Put · $90 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
21	6	—	—	$0.00	$0.65	$0.68		$0.42	$0.00	$0.05	—	—	3	3
Call · $91 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:35.030 UTC Last $0.68 Breakeven $91.68 Implied vol — Delta — Gamma — Theta — Vega — Open interest 21 OI effective date Sep 3, 2026 Model this call Put · $91 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 16:58:04.465 UTC Last $0.42 Breakeven $90.58 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 3, 2026 Model this put
Underlying $91.45
10	10	—	—	$0.00	$0.05	$0.03		$0.58	$0.50	$0.60	-0.726	4.1%	2	—
Call · $92 Daily-bar session Sep 2, 2026 Quote as of 2026-09-04 16:58:04.465 UTC Last $0.03 Breakeven $92.03 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 3, 2026 Model this call Put · $92 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-04 19:58:29.095 UTC Last $0.58 Breakeven $91.42 Implied vol 4.1% Delta -0.726 ≈73% ITM Gamma 0.468 Theta -0.002 Vega 0.058 Open interest — OI effective date — Model this put
2	2	—	—	$0.00	$0.05	$0.05		$1.55	$1.50	$4.90	-0.58	34.9%	10	1
Call · $93 Daily-bar session Jul 27, 2026 Quote as of 2026-09-04 16:58:04.464 UTC Last $0.05 Breakeven $93.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $93 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:56:24.405 UTC Last $1.55 Breakeven $91.45 Implied vol 34.9% Delta -0.58 ≈58% ITM Gamma 0.065 Theta -0.085 Vega 0.068 Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$0.00	$0.05	—		$2.57	$2.50	$4.40	-0.676	28.8%	5	1
Call · $94 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $94 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:58:30.784 UTC Last $2.57 Breakeven $91.43 Implied vol 28.8% Delta -0.676 ≈68% ITM Gamma 0.072 Theta -0.062 Vega 0.062 Open interest 1 OI effective date Sep 3, 2026 Model this put
1	1	—	—	$0.00	$0.05	$0.05		$3.65	$3.20	$4.00	-0.876	16.6%	1	—
Call · $95 Daily-bar session Aug 10, 2026 Quote as of 2026-09-04 16:58:04.464 UTC Last $0.05 Breakeven $95.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $95 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-04 19:55:02.031 UTC Last $3.65 Breakeven $91.35 Implied vol 16.6% Delta -0.876 ≈88% ITM Gamma 0.071 Theta -0.014 Vega 0.035 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		—	$4.00	$5.20	-0.892	19.9%	—	—
Call · $96 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $96 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.682 UTC Last — Breakeven — Implied vol 19.9% Delta -0.892 ≈89% ITM Gamma 0.054 Theta -0.016 Vega 0.032 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		—	$5.00	$6.20	-0.904	23%	—	—
Call · $97 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.464 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $97 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:02.030 UTC Last — Breakeven — Implied vol 23% Delta -0.904 ≈90% ITM Gamma 0.043 Theta -0.017 Vega 0.029 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		$6.58	$5.80	$7.30	-0.93	24.1%	44	—
Call · $98 Daily-bar session Unknown Quote as of 2026-09-04 13:30:30.954 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $98 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:55:01.682 UTC Last $6.58 Breakeven $91.42 Implied vol 24.1% Delta -0.93 ≈93% ITM Gamma 0.033 Theta -0.012 Vega 0.023 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		—	$6.80	$8.30	-0.935	26.9%	—	—
Call · $99 Daily-bar session Unknown Quote as of 2026-09-04 16:58:04.465 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $99 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.682 UTC Last — Breakeven — Implied vol 26.9% Delta -0.935 ≈94% ITM Gamma 0.027 Theta -0.013 Vega 0.022 Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$0.05	$0.05		—	$7.80	$9.30	-0.94	29.6%	—	—
Call · $100 Daily-bar session Aug 10, 2026 Quote as of 2026-09-04 13:30:30.968 UTC Last $0.05 Breakeven $100.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $100 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:02.030 UTC Last — Breakeven — Implied vol 29.6% Delta -0.94 ≈94% ITM Gamma 0.024 Theta -0.014 Vega 0.021 Open interest — OI effective date — Model this put
100	100	—	—	$0.00	$0.05	$0.03		—	$8.80	$10.30	-0.943	32.2%	—	—
Call · $101 Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 13:30:30.968 UTC Last $0.03 Breakeven $101.03 Implied vol — Delta — Gamma — Theta — Vega — Open interest 100 OI effective date Sep 3, 2026 Model this call Put · $101 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:02.030 UTC Last — Breakeven — Implied vol 32.2% Delta -0.943 ≈94% ITM Gamma 0.021 Theta -0.015 Vega 0.02 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		$10.55	$10.20	$10.90	-0.946	34.8%	14	—
Call · $102 Daily-bar session Unknown Quote as of 2026-09-04 13:30:30.965 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $102 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:02.135 UTC Last $10.55 Breakeven $91.45 Implied vol 34.8% Delta -0.946 ≈95% ITM Gamma 0.018 Theta -0.015 Vega 0.019 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		—	$10.40	$12.80	-0.937	39.8%	—	—
Call · $103 Daily-bar session Unknown Quote as of 2026-09-04 13:30:33.628 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $103 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:01.826 UTC Last — Breakeven — Implied vol 39.8% Delta -0.937 ≈94% ITM Gamma 0.018 Theta -0.023 Vega 0.022 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		$12.50	$12.10	$12.90	-0.965	36.5%	14	—
Call · $104 Daily-bar session Unknown Quote as of 2026-09-04 13:30:57.782 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $104 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:55:01.682 UTC Last $12.50 Breakeven $91.50 Implied vol 36.5% Delta -0.965 ≈96% ITM Gamma 0.012 Theta -0.009 Vega 0.013 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–Sep 4, 2026; 23 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.