IWB · iShares Russell 1000 ETF ETF

Alerts for IWB

$421.50 -1.56 (-0.37%) At close · Sep 4

Options Chain

Underlying $421.50 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 12 days to expiry · 56 contracts · mixed daily-bar sessions · Jul 17, 2026–Sep 4, 2026; 42 unknown

Put / call OI

0.73

Balanced positioning

Open interest

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$425.00

$3.50 above spot

ATM implied vol

12.3%

market's expected move

Open interest by strike

Calls Puts

325

330

335

340

345

350

355

360

365

370

375

380

385

390

395

400

405

410

415

420

425

430

435

440

445

450

455

460

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 12d Oct 16 40d Nov 20 75d Dec 18 103d Feb 19 166d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	56%	0.996	$95.60	$98.30	—		—	$0.00	$0.75	—	—	—	—
Call · $325 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.059 UTC Last — Breakeven — Implied vol 56% Delta 0.996 ≈100% ITM Gamma 0 Theta -0.055 Vega 0.01 Open interest — OI effective date — Model this call Put · $325 Daily-bar session Unknown Quote as of 2026-09-04 19:55:15.415 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	52.4%	0.996	$90.60	$93.30	—		—	$0.00	$0.75	—	—	—	—
Call · $330 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:56.779 UTC Last — Breakeven — Implied vol 52.4% Delta 0.996 ≈100% ITM Gamma 0 Theta -0.054 Vega 0.01 Open interest — OI effective date — Model this call Put · $330 Daily-bar session Unknown Quote as of 2026-09-04 19:55:16.927 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	48.9%	0.996	$85.60	$88.30	—		—	$0.00	$0.75	—	—	—	—
Call · $335 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:39.541 UTC Last — Breakeven — Implied vol 48.9% Delta 0.996 ≈100% ITM Gamma 0 Theta -0.052 Vega 0.009 Open interest — OI effective date — Model this call Put · $335 Daily-bar session Unknown Quote as of 2026-09-04 19:55:17.611 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	52.4%	0.99	$80.80	$83.30	—		—	$0.00	$0.75	—	—	—	—
Call · $340 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:36.991 UTC Last — Breakeven — Implied vol 52.4% Delta 0.99 ≈99% ITM Gamma 0.001 Theta -0.079 Vega 0.021 Open interest — OI effective date — Model this call Put · $340 Daily-bar session Unknown Quote as of 2026-09-04 19:55:16.177 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$75.40	$78.30	—		$1.10	$0.00	$0.75	—	—	1	1
Call · $345 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:54.629 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $345 Daily-bar session Jul 17, 2026 Quote as of 2026-09-04 19:55:12.623 UTC Last $1.10 Breakeven $343.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	38.4%	0.997	$70.60	$73.30	—		$1.29	$0.00	$0.75	—	—	1	1
Call · $350 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:38.329 UTC Last — Breakeven — Implied vol 38.4% Delta 0.997 ≈100% ITM Gamma 0 Theta -0.047 Vega 0.008 Open interest — OI effective date — Model this call Put · $350 Daily-bar session Jul 21, 2026 Quote as of 2026-09-04 19:55:13.020 UTC Last $1.29 Breakeven $348.71 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$65.40	$68.30	—		—	$0.00	$0.75	—	—	—	—
Call · $355 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:52.983 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $355 Daily-bar session Unknown Quote as of 2026-09-04 19:55:13.317 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	31.5%	0.998	$60.60	$63.30	—		—	$0.00	$0.75	—	—	—	—
Call · $360 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.708 UTC Last — Breakeven — Implied vol 31.5% Delta 0.998 ≈100% ITM Gamma 0 Theta -0.044 Vega 0.006 Open interest — OI effective date — Model this call Put · $360 Daily-bar session Unknown Quote as of 2026-09-04 19:55:14.918 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$55.40	$58.30	—		$2.45	$0.00	$0.75	—	—	1	1
Call · $365 In the money 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 · $365 Daily-bar session Jul 17, 2026 Quote as of 2026-09-04 19:55:12.552 UTC Last $2.45 Breakeven $362.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	32.6%	0.988	$50.70	$53.40	—		—	$0.00	$0.75	—	—	—	—
Call · $370 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:44.646 UTC Last — Breakeven — Implied vol 32.6% Delta 0.988 ≈99% ITM Gamma 0.001 Theta -0.069 Vega 0.024 Open interest — OI effective date — Model this call Put · $370 Daily-bar session Unknown Quote as of 2026-09-04 19:55:09.814 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	32.6%	0.979	$45.90	$48.40	—		$0.67	$0.00	$0.75	—	—	1	1
Call · $375 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:19.136 UTC Last — Breakeven — Implied vol 32.6% Delta 0.979 ≈98% ITM Gamma 0.002 Theta -0.09 Vega 0.039 Open interest — OI effective date — Model this call Put · $375 Daily-bar session Aug 7, 2026 Quote as of 2026-09-04 19:55:10.646 UTC Last $0.67 Breakeven $374.33 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	23.9%	0.993	$40.70	$43.30	—		—	$0.00	$0.75	—	—	—	—
Call · $380 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:35.692 UTC Last — Breakeven — Implied vol 23.9% Delta 0.993 ≈99% ITM Gamma 0.001 Theta -0.053 Vega 0.015 Open interest — OI effective date — Model this call Put · $380 Daily-bar session Unknown Quote as of 2026-09-04 19:55:13.317 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	23.2%	0.986	$35.70	$38.40	—		—	$0.00	$0.75	—	—	—	—
Call · $385 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:57.220 UTC Last — Breakeven — Implied vol 23.2% Delta 0.986 ≈99% ITM Gamma 0.002 Theta -0.064 Vega 0.027 Open interest — OI effective date — Model this call Put · $385 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.734 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	17.9%	0.993	$30.60	$33.40	—		—	$0.00	$0.75	—	—	—	—
Call · $390 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.822 UTC Last — Breakeven — Implied vol 17.9% Delta 0.993 ≈99% ITM Gamma 0.001 Theta -0.05 Vega 0.015 Open interest — OI effective date — Model this call Put · $390 Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.816 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	18.5%	0.977	$25.70	$28.50	—		—	$0.00	$0.75	—	—	—	—
Call · $395 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.117 UTC Last — Breakeven — Implied vol 18.5% Delta 0.977 ≈98% ITM Gamma 0.004 Theta -0.071 Vega 0.042 Open interest — OI effective date — Model this call Put · $395 Daily-bar session Unknown Quote as of 2026-09-04 19:59:38.628 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	19.6%	0.936	$21.20	$23.60	—		$1.35	$0.05	$0.75	-0.062	19.4%	1	1
Call · $400 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:58.572 UTC Last — Breakeven — Implied vol 19.6% Delta 0.936 ≈94% ITM Gamma 0.008 Theta -0.115 Vega 0.095 Open interest — OI effective date — Model this call Put · $400 Daily-bar session Aug 17, 2026 Quote as of 2026-09-04 19:59:54.767 UTC Last $1.35 Breakeven $398.65 Implied vol 19.4% Delta -0.062 ≈6% ITM Gamma 0.008 Theta -0.072 Vega 0.093 Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	17.6%	0.904	$16.40	$18.80	—		$1.66	$0.00	$1.35	—	—	2	2
Call · $405 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:26.818 UTC Last — Breakeven — Implied vol 17.6% Delta 0.904 ≈90% ITM Gamma 0.013 Theta -0.132 Vega 0.13 Open interest — OI effective date — Model this call Put · $405 Daily-bar session Sep 1, 2026 Quote as of 2026-09-04 19:58:37.563 UTC Last $1.66 Breakeven $403.34 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this put
—	—	15.4%	0.852	$11.60	$14.20	—		—	$0.00	$1.80	—	—	—	—
Call · $410 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:58.616 UTC Last — Breakeven — Implied vol 15.4% Delta 0.852 ≈85% ITM Gamma 0.02 Theta -0.148 Vega 0.176 Open interest — OI effective date — Model this call Put · $410 Daily-bar session Unknown Quote as of 2026-09-04 19:58:29.759 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	13.1%	0.764	$7.30	$9.50	—		—	$0.45	$2.80	-0.251	14%	—	—
Call · $415 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:58.903 UTC Last — Breakeven — Implied vol 13.1% Delta 0.764 ≈76% ITM Gamma 0.031 Theta -0.16 Vega 0.236 Open interest — OI effective date — Model this call Put · $415 Daily-bar session Unknown Quote as of 2026-09-04 19:59:39.384 UTC Last — Breakeven — Implied vol 14% Delta -0.251 ≈25% ITM Gamma 0.03 Theta -0.131 Vega 0.243 Open interest — OI effective date — Model this put
1	1	11.7%	0.593	$3.40	$5.90	$11.90		—	$1.55	$4.40	-0.414	12.8%	—	—
Call · $420 In the money Daily-bar session Aug 5, 2026 Quote as of 2026-09-04 19:59:34.573 UTC Last $11.90 Breakeven $431.90 Implied vol 11.7% Delta 0.593 ≈59% ITM Gamma 0.043 Theta -0.169 Vega 0.297 Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $420 Daily-bar session Unknown Quote as of 2026-09-04 19:59:50.077 UTC Last — Breakeven — Implied vol 12.8% Delta -0.414 ≈41% ITM Gamma 0.04 Theta -0.141 Vega 0.298 Open interest — OI effective date — Model this put
Underlying $421.50
2	1	11%	0.365	$1.05	$3.10	$2.07		$6.00	$4.20	$7.00	-0.615	12.8%	1	1
Call · $425 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:37.526 UTC Last $2.07 Breakeven $427.07 Implied vol 11% Delta 0.365 ≈37% ITM Gamma 0.045 Theta -0.147 Vega 0.287 Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $425 In the money Daily-bar session Aug 14, 2026 Quote as of 2026-09-04 19:59:13.901 UTC Last $6.00 Breakeven $419.00 Implied vol 12.8% Delta -0.615 ≈61% ITM Gamma 0.039 Theta -0.13 Vega 0.292 Open interest 1 OI effective date Sep 3, 2026 Model this put
10	10	10.9%	0.174	$0.20	$1.35	$4.11		$12.00	$8.20	$10.20	-0.783	13%	1	1
Call · $430 Daily-bar session Aug 12, 2026 Quote as of 2026-09-04 19:59:33.322 UTC Last $4.11 Breakeven $434.11 Implied vol 10.9% Delta 0.174 ≈17% ITM Gamma 0.031 Theta -0.097 Vega 0.197 Open interest 10 OI effective date Sep 3, 2026 Model this call Put · $430 In the money Daily-bar session Aug 4, 2026 Quote as of 2026-09-04 19:59:50.323 UTC Last $12.00 Breakeven $418.00 Implied vol 13% Delta -0.783 ≈78% ITM Gamma 0.03 Theta -0.088 Vega 0.224 Open interest 1 OI effective date Sep 3, 2026 Model this put
2	1	—	—	$0.00	$0.95	$0.65		$15.30	$12.70	$15.10	-0.851	15.9%	1	1
Call · $435 Daily-bar session Aug 28, 2026 Quote as of 2026-09-04 19:55:08.720 UTC Last $0.65 Breakeven $435.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $435 In the money Daily-bar session Aug 4, 2026 Quote as of 2026-09-04 19:59:46.815 UTC Last $15.30 Breakeven $419.70 Implied vol 15.9% Delta -0.851 ≈85% ITM Gamma 0.019 Theta -0.08 Vega 0.177 Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$0.00	$0.75	—		$18.80	$17.80	$20.00	-0.874	19.8%	1	1
Call · $440 Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.320 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $440 In the money Daily-bar session Aug 4, 2026 Quote as of 2026-09-04 19:59:58.547 UTC Last $18.80 Breakeven $421.20 Implied vol 19.8% Delta -0.874 ≈87% ITM Gamma 0.014 Theta -0.091 Vega 0.158 Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$0.00	$0.75	—		—	$22.60	$25.50	-0.88	24.5%	—	—
Call · $445 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.819 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $445 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:35.695 UTC Last — Breakeven — Implied vol 24.5% Delta -0.88 ≈88% ITM Gamma 0.011 Theta -0.116 Vega 0.153 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$27.80	$30.40	-0.889	28.4%	—	—
Call · $450 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.330 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $450 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:55.988 UTC Last — Breakeven — Implied vol 28.4% Delta -0.889 ≈89% ITM Gamma 0.009 Theta -0.131 Vega 0.145 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$32.60	$35.30	-0.907	30.7%	—	—
Call · $455 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.819 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $455 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:36.417 UTC Last — Breakeven — Implied vol 30.7% Delta -0.907 ≈91% ITM Gamma 0.007 Theta -0.121 Vega 0.127 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$37.60	$40.30	-0.914	34%	—	—
Call · $460 Daily-bar session Unknown Quote as of 2026-09-04 19:55:06.330 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $460 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.155 UTC Last — Breakeven — Implied vol 34% Delta -0.914 ≈91% ITM Gamma 0.006 Theta -0.128 Vega 0.12 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; 42 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.