NBBK · NB Bancorp, Inc.

Track NBBK — free Ask ALVIS about NBBK

$22.42 +0.13 (+0.58%) At close · Jul 24

Market Cap

$996.50M

44.71M

Options Chain

15-min delayed Underlying $22.42 · today Options Calculator

Positioning

Aug 21, 2026 · 27 days to expiry · 16 contracts

Put / call OI

0.27

Call-heavy positioning

Open interest

356

contracts outstanding

Volume

traded today

Max pain

$20.00

$2.42 below spot

ATM implied vol

37.9%

market's expected move

Open interest by strike

Calls Puts

12.5

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 27d Sep 18 55d Nov 20 118d Jan 15 174d Feb 19 209d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	171.5%	0.975	—		—	—	—	—	0
Call · $10 In the money Last — Breakeven — Implied vol 171.5% Delta 0.975 ≈98% ITM Gamma 0.005 Theta -0.011 Vega 0.004 Open interest 0 Model this call Put · $10 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	91%	0.993	—		$0.05	—	—	5	5
Call · $12.5 In the money Last — Breakeven — Implied vol 91% Delta 0.993 ≈99% ITM Gamma 0.003 Theta -0.002 Vega 0.001 Open interest 0 Model this call Put · $12.5 Last $0.05 Breakeven $12.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this put
0	—	59.2%	0.995	—		—	-0.095	132.5%	—	0
Call · $15 In the money Last — Breakeven — Implied vol 59.2% Delta 0.995 ≈99% ITM Gamma 0.003 Theta -0.001 Vega 0.001 Open interest 0 Model this call Put · $15 Last — Breakeven — Implied vol 132.5% Delta -0.095 ≈9% ITM Gamma 0.021 Theta -0.026 Vega 0.009 Open interest 0 Model this put
30	20	0.1%	0.999	$3.30		—	-0.131	92.1%	—	0
Call · $17.5 In the money Last $3.30 Breakeven $20.80 Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 30 Model this call Put · $17.5 Last — Breakeven — Implied vol 92.1% Delta -0.131 ≈13% ITM Gamma 0.038 Theta -0.022 Vega 0.014 Open interest 0 Model this put
60	1	27.7%	0.943	$1.26		$0.99	-0.197	55.2%	10	70
Call · $20 In the money Last $1.26 Breakeven $21.26 Implied vol 27.7% Delta 0.943 ≈94% ITM Gamma 0.067 Theta -0.004 Vega 0.006 Open interest 60 Model this call Put · $20 Last $0.99 Breakeven $19.01 Implied vol 55.2% Delta -0.197 ≈20% ITM Gamma 0.084 Theta -0.017 Vega 0.015 Open interest 70 Model this put
Underlying $22.42
140	10	51%	0.523	$0.47		—	-0.498	24.7%	—	0
Call · $22.5 Last $0.47 Breakeven $22.97 Implied vol 51% Delta 0.523 ≈52% ITM Gamma 0.13 Theta -0.024 Vega 0.024 Open interest 140 Model this call Put · $22.5 In the money Last — Breakeven — Implied vol 24.7% Delta -0.498 ≈50% ITM Gamma 0.27 Theta -0.011 Vega 0.024 Open interest 0 Model this put
51	20	—	—	$0.80		—	-0.891	31.6%	—	0
Call · $25 Last $0.80 Breakeven $25.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 51 Model this call Put · $25 In the money Last — Breakeven — Implied vol 31.6% Delta -0.891 ≈89% ITM Gamma 0.104 Theta -0.006 Vega 0.011 Open interest 0 Model this put
0	—	—	—	—		—	-0.939	66.5%	—	0
Call · $30 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 In the money Last — Breakeven — Implied vol 66.5% Delta -0.939 ≈94% ITM Gamma 0.033 Theta -0.008 Vega 0.007 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

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.

Key facts CIK 1979330 CUSIP 63945M107 13F (30d) 24 filings 24 filers Visit website Investor relations