ISTB · iShares Core 1-5 Year USD Bond ETF ETF

Alerts for ISTB

$47.80 +0.00 (+0.00%) At close · Sep 4

Options Chain

Underlying $47.80 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 12 days to expiry · 38 contracts · daily-bar sessions unknown

Put / call OI

—

open-interest date unavailable

Open interest

—

open-interest date unavailable

Volume

—

daily-bar sessions unknown

ATM implied vol

20.6%

market's expected move

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
—	—	67%	0.958	$7.10	$10.60	—		—	$0.00	$1.65	—	—	—	—
Call · $39 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.493 UTC Last — Breakeven — Implied vol 67% Delta 0.958 ≈96% ITM Gamma 0.015 Theta -0.025 Vega 0.008 Open interest — OI effective date — Model this call Put · $39 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.669 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	59.9%	0.954	$6.10	$9.60	—		—	$0.00	$1.65	—	—	—	—
Call · $40 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.121 UTC Last — Breakeven — Implied vol 59.9% Delta 0.954 ≈95% ITM Gamma 0.019 Theta -0.025 Vega 0.008 Open interest — OI effective date — Model this call Put · $40 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.667 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	52.9%	0.949	$5.10	$8.60	—		—	$0.00	$1.65	—	—	—	—
Call · $41 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.699 UTC Last — Breakeven — Implied vol 52.9% Delta 0.949 ≈95% ITM Gamma 0.023 Theta -0.024 Vega 0.009 Open interest — OI effective date — Model this call Put · $41 Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.667 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	46%	0.943	$4.10	$7.60	—		—	$0.00	$1.65	—	—	—	—
Call · $42 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.186 UTC Last — Breakeven — Implied vol 46% Delta 0.943 ≈94% ITM Gamma 0.029 Theta -0.023 Vega 0.01 Open interest — OI effective date — Model this call Put · $42 Daily-bar session Unknown Quote as of 2026-09-04 19:58:20.745 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	39.1%	0.935	$3.10	$6.60	—		—	$0.00	$1.65	—	—	—	—
Call · $43 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.698 UTC Last — Breakeven — Implied vol 39.1% Delta 0.935 ≈94% ITM Gamma 0.037 Theta -0.022 Vega 0.011 Open interest — OI effective date — Model this call Put · $43 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.958 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	32.2%	0.924	$2.10	$5.60	—		—	$0.00	$1.65	—	—	—	—
Call · $44 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.699 UTC Last — Breakeven — Implied vol 32.2% Delta 0.924 ≈92% ITM Gamma 0.051 Theta -0.021 Vega 0.012 Open interest — OI effective date — Model this call Put · $44 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.710 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	25.2%	0.907	$1.10	$4.60	—		—	$0.00	$1.65	—	—	—	—
Call · $45 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.699 UTC Last — Breakeven — Implied vol 25.2% Delta 0.907 ≈91% ITM Gamma 0.076 Theta -0.019 Vega 0.014 Open interest — OI effective date — Model this call Put · $45 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.466 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	20.6%	0.847	$0.20	$3.60	—		—	$0.00	$1.65	—	—	—	—
Call · $46 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.698 UTC Last — Breakeven — Implied vol 20.6% Delta 0.847 ≈85% ITM Gamma 0.133 Theta -0.021 Vega 0.021 Open interest — OI effective date — Model this call Put · $46 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.261 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.55	—		—	$0.00	$1.65	—	—	—	—
Call · $47 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.127 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $47 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.052 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $47.80
—	—	—	—	$0.00	$1.65	—		—	$0.00	$1.95	—	—	—	—
Call · $48 Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.925 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $48 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.952 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$0.00	$2.95	—	—	—	—
Call · $49 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.133 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $49 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.261 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$0.50	$4.00	-0.976	12.8%	—	—
Call · $50 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.357 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $50 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.838 UTC Last — Breakeven — Implied vol 12.8% Delta -0.976 ≈98% ITM Gamma 0.052 Theta 0.002 Vega 0.005 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$1.50	$5.00	-0.98	17.6%	—	—
Call · $51 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.562 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $51 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.430 UTC Last — Breakeven — Implied vol 17.6% Delta -0.98 ≈98% ITM Gamma 0.032 Theta 0.002 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$2.50	$6.00	-0.982	22.2%	—	—
Call · $52 Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.826 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $52 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.433 UTC Last — Breakeven — Implied vol 22.2% Delta -0.982 ≈98% ITM Gamma 0.023 Theta 0.002 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$3.50	$7.00	-0.983	26.7%	—	—
Call · $53 Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.057 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $53 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.435 UTC Last — Breakeven — Implied vol 26.7% Delta -0.983 ≈98% ITM Gamma 0.018 Theta 0.001 Vega 0.004 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$4.50	$8.00	-0.984	31.1%	—	—
Call · $54 Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.263 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $54 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.438 UTC Last — Breakeven — Implied vol 31.1% Delta -0.984 ≈98% ITM Gamma 0.015 Theta 0.001 Vega 0.003 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$5.50	$9.00	-0.985	35.4%	—	—
Call · $55 Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.481 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $55 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.438 UTC Last — Breakeven — Implied vol 35.4% Delta -0.985 ≈98% ITM Gamma 0.012 Theta 0.001 Vega 0.003 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$6.50	$10.00	-0.985	39.6%	—	—
Call · $56 Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.726 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $56 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.438 UTC Last — Breakeven — Implied vol 39.6% Delta -0.985 ≈99% ITM Gamma 0.011 Theta 0 Vega 0.003 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.65	—		—	$7.50	$11.00	-0.986	43.7%	—	—
Call · $57 Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.953 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $57 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.438 UTC Last — Breakeven — Implied vol 43.7% Delta -0.986 ≈99% ITM Gamma 0.01 Theta 0 Vega 0.003 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 daily-bar sessions 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.