DFAS · Dimensional U.S. Small Cap ETF ETF

Alerts for DFAS

$82.20 +0.15 (+0.18%) At close · Sep 4

Options Chain

Underlying $82.20 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 13 days to expiry · 56 contracts · mixed daily-bar sessions · Feb 13, 2026–Aug 13, 2026; 50 unknown

Put / call OI

2.60

Put-heavy positioning

Open interest

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$74.00

$8.20 below spot

ATM implied vol

15.7%

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 Dec 18 104d Mar 19 195d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$36.10	$38.10	—		—	$0.00	$0.55	—	—	—	—
Call · $45 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.124 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $45 Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.764 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$31.10	$33.10	—		—	$0.00	$0.55	—	—	—	—
Call · $50 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:48.710 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $50 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.472 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	2	—	—	$26.10	$28.00	$21.56		—	$0.00	$0.55	—	—	—	—
Call · $55 In the money Daily-bar session Feb 13, 2026 Quote as of 2026-09-04 19:55:20.548 UTC Last $21.56 Breakeven $76.56 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $55 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.315 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$21.10	$23.00	—		—	$0.00	$0.55	—	—	—	—
Call · $60 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:29.476 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $60 Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.118 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$17.00	$19.00	—		—	$0.00	$0.55	—	—	—	—
Call · $64 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:13.223 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $64 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.918 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$16.00	$18.00	—		—	$0.00	$0.55	—	—	—	—
Call · $65 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.090 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $65 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.913 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$15.00	$17.00	—		—	$0.00	$0.55	—	—	—	—
Call · $66 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.213 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $66 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.818 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	2	—	—	$14.00	$16.00	$7.41		—	$0.00	$0.55	—	—	—	—
Call · $67 In the money Daily-bar session Apr 2, 2026 Quote as of 2026-09-04 19:59:32.159 UTC Last $7.41 Breakeven $74.41 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $67 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.813 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$13.00	$15.00	—		—	$0.00	$0.55	—	—	—	—
Call · $68 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.065 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $68 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.764 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$12.00	$14.00	—		—	$0.00	$0.55	—	—	—	—
Call · $69 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:32.012 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $69 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.090 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$11.00	$13.00	—		—	$0.00	$0.55	—	—	—	—
Call · $70 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.918 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $70 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.670 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	30.8%	0.995	$10.10	$12.50	—		—	$0.00	$0.55	—	—	—	—
Call · $71 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.767 UTC Last — Breakeven — Implied vol 30.8% Delta 0.995 ≈100% ITM Gamma 0.003 Theta -0.01 Vega 0.002 Open interest — OI effective date — Model this call Put · $71 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.590 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	27.6%	0.995	$9.10	$11.50	—		—	$0.00	$0.55	—	—	—	—
Call · $72 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.764 UTC Last — Breakeven — Implied vol 27.6% Delta 0.995 ≈100% ITM Gamma 0.003 Theta -0.009 Vega 0.002 Open interest — OI effective date — Model this call Put · $72 Daily-bar session Unknown Quote as of 2026-09-04 19:55:08.982 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	24.4%	0.996	$8.10	$10.50	—		—	$0.00	$0.55	—	—	—	—
Call · $73 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.763 UTC Last — Breakeven — Implied vol 24.4% Delta 0.996 ≈100% ITM Gamma 0.003 Theta -0.009 Vega 0.002 Open interest — OI effective date — Model this call Put · $73 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.570 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	21.2%	0.996	$7.10	$9.50	—		$5.92	$0.00	$0.55	—	—	22	11
Call · $74 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.763 UTC Last — Breakeven — Implied vol 21.2% Delta 0.996 ≈100% ITM Gamma 0.003 Theta -0.009 Vega 0.002 Open interest — OI effective date — Model this call Put · $74 Daily-bar session Apr 2, 2026 Quote as of 2026-09-04 19:55:08.184 UTC Last $5.92 Breakeven $68.08 Implied vol — Delta — Gamma — Theta — Vega — Open interest 11 OI effective date Sep 3, 2026 Model this put
—	—	18%	0.997	$6.10	$8.50	—		—	$0.00	$0.55	—	—	—	—
Call · $75 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.763 UTC Last — Breakeven — Implied vol 18% Delta 0.997 ≈100% ITM Gamma 0.003 Theta -0.008 Vega 0.001 Open interest — OI effective date — Model this call Put · $75 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.484 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	14.6%	0.998	$5.10	$7.50	—		—	$0.00	$0.60	—	—	—	—
Call · $76 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:44.763 UTC Last — Breakeven — Implied vol 14.6% Delta 0.998 ≈100% ITM Gamma 0.003 Theta -0.008 Vega 0.001 Open interest — OI effective date — Model this call Put · $76 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.133 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	25.7%	0.919	$4.30	$6.60	—		—	$0.00	$0.60	—	—	—	—
Call · $77 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:41.653 UTC Last — Breakeven — Implied vol 25.7% Delta 0.919 ≈92% ITM Gamma 0.038 Theta -0.03 Vega 0.023 Open interest — OI effective date — Model this call Put · $77 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.458 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	23.7%	0.89	$3.40	$5.60	—		—	$0.00	$0.65	—	—	—	—
Call · $78 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:41.653 UTC Last — Breakeven — Implied vol 23.7% Delta 0.89 ≈89% ITM Gamma 0.051 Theta -0.033 Vega 0.029 Open interest — OI effective date — Model this call Put · $78 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.388 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	21%	0.855	$2.40	$4.70	—		$1.15	$0.00	$0.65	—	—	1	1
Call · $79 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:41.653 UTC Last — Breakeven — Implied vol 21% Delta 0.855 ≈85% ITM Gamma 0.07 Theta -0.035 Vega 0.035 Open interest — OI effective date — Model this call Put · $79 Daily-bar session Jul 30, 2026 Quote as of 2026-09-04 19:59:31.383 UTC Last $1.15 Breakeven $77.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
2	1	15.8%	0.833	$1.45	$3.60	$5.00		—	$0.00	$0.55	—	—	—	—
Call · $80 In the money Daily-bar session Aug 13, 2026 Quote as of 2026-09-04 19:59:58.536 UTC Last $5.00 Breakeven $85.00 Implied vol 15.8% Delta 0.833 ≈83% ITM Gamma 0.102 Theta -0.03 Vega 0.039 Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $80 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.378 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	17.5%	0.692	$1.05	$2.65	—		$1.43	$0.00	$1.00	—	—	1	1
Call · $81 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:58:41.653 UTC Last — Breakeven — Implied vol 17.5% Delta 0.692 ≈69% ITM Gamma 0.13 Theta -0.042 Vega 0.055 Open interest — OI effective date — Model this call Put · $81 Daily-bar session Aug 3, 2026 Quote as of 2026-09-04 19:59:31.319 UTC Last $1.43 Breakeven $79.57 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	17.2%	0.552	$0.45	$2.00	—		—	$0.05	$1.40	-0.439	14.1%	—	—
Call · $82 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.090 UTC Last — Breakeven — Implied vol 17.2% Delta 0.552 ≈55% ITM Gamma 0.148 Theta -0.045 Vega 0.061 Open interest — OI effective date — Model this call Put · $82 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.287 UTC Last — Breakeven — Implied vol 14.1% Delta -0.439 ≈44% ITM Gamma 0.181 Theta -0.029 Vega 0.061 Open interest — OI effective date — Model this put
Underlying $82.20
—	—	17.5%	0.406	$0.05	$1.50	—		—	$0.25	$2.30	-0.617	14.3%	—	—
Call · $83 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.090 UTC Last — Breakeven — Implied vol 17.5% Delta 0.406 ≈41% ITM Gamma 0.143 Theta -0.044 Vega 0.06 Open interest — OI effective date — Model this call Put · $83 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.309 UTC Last — Breakeven — Implied vol 14.3% Delta -0.617 ≈62% ITM Gamma 0.173 Theta -0.027 Vega 0.059 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$1.00	$2.80	-0.803	12.5%	—	—
Call · $84 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.259 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $84 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:05.420 UTC Last — Breakeven — Implied vol 12.5% Delta -0.803 ≈80% ITM Gamma 0.143 Theta -0.014 Vega 0.043 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.60	—		—	$1.70	$3.90	-0.891	13.7%	—	—
Call · $85 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.090 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $85 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.408 UTC Last — Breakeven — Implied vol 13.7% Delta -0.891 ≈89% ITM Gamma 0.088 Theta -0.008 Vega 0.029 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.55	—		—	$6.60	$9.00	-0.94	29.9%	—	—
Call · $90 Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.997 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $90 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:12.847 UTC Last — Breakeven — Implied vol 29.9% Delta -0.94 ≈94% ITM Gamma 0.026 Theta -0.013 Vega 0.019 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.55	—		—	$12.10	$14.10	-0.896	57.8%	—	—
Call · $95 Daily-bar session Unknown Quote as of 2026-09-04 19:59:31.683 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $95 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:17.501 UTC Last — Breakeven — Implied vol 57.8% Delta -0.896 ≈90% ITM Gamma 0.02 Theta -0.053 Vega 0.028 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 · Feb 13, 2026–Aug 13, 2026; 50 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.