SMLL · Harbor Active Small Cap ETF ETF

Alerts for SMLL

$21.76 -0.04 (-0.21%) At close · Sep 4

Options Chain

Underlying $21.76 · at close Sep 4, 2026 Options Calculator

Positioning

Sep 18, 2026 · 12 days to expiry · 42 contracts · mixed daily-bar sessions · Feb 27, 2026; 40 unknown

Put / call OI

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open-interest date unavailable

Open interest

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open-interest date unavailable

Volume

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dated and unknown daily-bar sessions

ATM implied vol

27.9%

market's expected move

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 12d Oct 16 40d Dec 18 103d Mar 19 194d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	2	—	—	$9.80	$11.80	$9.62		—	$0.00	$0.45	—	—	—	—
Call · $11 In the money Daily-bar session Feb 27, 2026 Quote as of 2026-09-04 19:55:45.618 UTC Last $9.62 Breakeven $20.62 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $11 Daily-bar session Unknown Quote as of 2026-09-04 19:59:54.003 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$8.80	$10.80	—		—	$0.00	$0.45	—	—	—	—
Call · $12 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.318 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 19:59:14.842 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$7.80	$9.80	—		—	$0.00	$0.45	—	—	—	—
Call · $13 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.318 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 19:58:58.913 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$6.80	$8.80	—		—	$0.00	$0.45	—	—	—	—
Call · $14 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.317 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 19:56:26.235 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$5.80	$7.80	—		—	$0.00	$0.45	—	—	—	—
Call · $15 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.317 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $15 Daily-bar session Unknown Quote as of 2026-09-04 19:59:09.013 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	76.5%	0.987	$4.80	$6.80	—		—	$0.00	$0.45	—	—	—	—
Call · $16 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:15.576 UTC Last — Breakeven — Implied vol 76.5% Delta 0.987 ≈99% ITM Gamma 0.011 Theta -0.006 Vega 0.001 Open interest — OI effective date — Model this call Put · $16 Daily-bar session Unknown Quote as of 2026-09-04 19:55:08.576 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	62.4%	0.985	$3.80	$5.80	—		—	$0.00	$0.45	—	—	—	—
Call · $17 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.314 UTC Last — Breakeven — Implied vol 62.4% Delta 0.985 ≈98% ITM Gamma 0.015 Theta -0.005 Vega 0.002 Open interest — OI effective date — Model this call Put · $17 Daily-bar session Unknown Quote as of 2026-09-04 19:58:12.083 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	49%	0.983	$2.80	$4.80	—		—	$0.00	$0.45	—	—	—	—
Call · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:45.314 UTC Last — Breakeven — Implied vol 49% Delta 0.983 ≈98% ITM Gamma 0.021 Theta -0.005 Vega 0.002 Open interest — OI effective date — Model this call Put · $18 Daily-bar session Unknown Quote as of 2026-09-04 19:57:01.643 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	36.2%	0.979	$1.80	$3.80	—		—	$0.00	$0.45	—	—	—	—
Call · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:09.179 UTC Last — Breakeven — Implied vol 36.2% Delta 0.979 ≈98% ITM Gamma 0.034 Theta -0.005 Vega 0.002 Open interest — OI effective date — Model this call Put · $19 Daily-bar session Unknown Quote as of 2026-09-04 19:56:07.963 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.85	$2.70	—		—	$0.00	$0.45	—	—	—	—
Call · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:07.052 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 19:56:24.473 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.75	—		—	$0.00	$0.65	—	—	—	—
Call · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:29.841 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 19:57:21.195 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $21.76
—	—	—	—	$0.00	$1.10	—		—	$0.00	$1.30	—	—	—	—
Call · $22 Daily-bar session Unknown Quote as of 2026-09-04 19:55:02.831 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $22 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:55:03.162 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$0.35	$2.25	-0.841	27.9%	—	—
Call · $23 Daily-bar session Unknown Quote as of 2026-09-04 19:58:13.313 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 19:55:05.439 UTC Last — Breakeven — Implied vol 27.9% Delta -0.841 ≈84% ITM Gamma 0.212 Theta -0.009 Vega 0.01 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$1.35	$3.30	-0.866	44.6%	—	—
Call · $24 Daily-bar session Unknown Quote as of 2026-09-04 19:55:04.607 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 19:55:08.148 UTC Last — Breakeven — Implied vol 44.6% Delta -0.866 ≈87% ITM Gamma 0.118 Theta -0.013 Vega 0.009 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$2.35	$4.20	-0.921	50%	—	—
Call · $25 Daily-bar session Unknown Quote as of 2026-09-04 19:57:02.416 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 19:55:10.650 UTC Last — Breakeven — Implied vol 50% Delta -0.921 ≈92% ITM Gamma 0.072 Theta -0.009 Vega 0.006 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$3.20	$5.20	—	—	—	—
Call · $26 Daily-bar session Unknown Quote as of 2026-09-04 19:57:51.758 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 19:55:45.315 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$4.20	$6.20	—	—	—	—
Call · $27 Daily-bar session Unknown Quote as of 2026-09-04 19:58:08.965 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 19:55:45.315 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$5.20	$7.20	-1	38.1%	—	—
Call · $28 Daily-bar session Unknown Quote as of 2026-09-04 19:55:09.026 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 19:55:45.316 UTC Last — Breakeven — Implied vol 38.1% Delta -1 ≈100% ITM Gamma 0.001 Theta 0.003 Vega 0 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$6.20	$8.20	-0.998	52.5%	—	—
Call · $29 Daily-bar session Unknown Quote as of 2026-09-04 19:55:10.168 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 19:55:45.317 UTC Last — Breakeven — Implied vol 52.5% Delta -0.998 ≈100% ITM Gamma 0.003 Theta 0.002 Vega 0 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		—	$7.20	$9.20	-0.996	61.7%	—	—
Call · $30 Daily-bar session Unknown Quote as of 2026-09-04 19:55:11.662 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 19:55:45.317 UTC Last — Breakeven — Implied vol 61.7% Delta -0.996 ≈100% ITM Gamma 0.004 Theta 0.002 Vega 0 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.45	—		$10.95	$8.20	$10.20	-0.995	70%	14	—
Call · $31 Daily-bar session Unknown Quote as of 2026-09-04 19:55:12.715 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 Feb 27, 2026 Quote as of 2026-09-04 19:55:45.318 UTC Last $10.95 Breakeven $20.05 Implied vol 70% Delta -0.995 ≈100% ITM Gamma 0.005 Theta 0.002 Vega 0.001 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 27, 2026; 40 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.