NPKI · NPK International Inc.

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$13.51 -0.07 (-0.52%) At close · Aug 6

Market Cap

$1.15B

84.91M

Options Chain

15-min delayed Underlying $13.51 · today Options Calculator

Positioning

Aug 21, 2026 · 14 days to expiry · 22 contracts

Put / call OI

16.50

Put-heavy positioning

Open interest

385

contracts outstanding

Volume

traded today

Max pain

$12.50

$1.01 below spot

ATM implied vol

69.3%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

12.5

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 14d Sep 18 42d Dec 18 133d Mar 19 224d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	452.1%	0.99	—		—	—	—	—	0
Call · $2.5 In the money Last — Breakeven — Implied vol 452.1% Delta 0.99 ≈99% ITM Gamma 0.002 Theta -0.011 Vega 0.001 Open interest 0 Model this call Put · $2.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	270.3%	0.984	—		—	—	—	—	0
Call · $5 In the money Last — Breakeven — Implied vol 270.3% Delta 0.984 ≈98% ITM Gamma 0.006 Theta -0.011 Vega 0.002 Open interest 0 Model this call Put · $5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	165.2%	0.975	—		—	—	—	—	0
Call · $7.5 In the money Last — Breakeven — Implied vol 165.2% Delta 0.975 ≈98% ITM Gamma 0.013 Theta -0.01 Vega 0.002 Open interest 0 Model this call Put · $7.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	2	120.8%	0.915	$3.22		—	—	—	—	0
Call · $10 In the money Last $3.22 Breakeven $13.22 Implied vol 120.8% Delta 0.915 ≈92% ITM Gamma 0.047 Theta -0.018 Vega 0.004 Open interest 3 Model this call Put · $10 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
14	3	57.7%	0.777	$1.30		$0.20	-0.281	80.8%	9	360
Call · $12.5 In the money Last $1.30 Breakeven $13.80 Implied vol 57.7% Delta 0.777 ≈78% ITM Gamma 0.192 Theta -0.017 Vega 0.009 Open interest 14 Model this call Put · $12.5 Last $0.20 Breakeven $12.30 Implied vol 80.8% Delta -0.281 ≈28% ITM Gamma 0.154 Theta -0.025 Vega 0.009 Open interest 360 Model this put
Underlying $13.51
0	—	100%	0.346	—		$1.51	-0.733	73.3%	3	3
Call · $15 Last — Breakeven — Implied vol 100% Delta 0.346 ≈35% ITM Gamma 0.136 Theta -0.035 Vega 0.01 Open interest 0 Model this call Put · $15 In the money Last $1.51 Breakeven $13.49 Implied vol 73.3% Delta -0.733 ≈73% ITM Gamma 0.168 Theta -0.022 Vega 0.01 Open interest 3 Model this put
5	5	108.2%	0.143	$0.05		—	-0.943	78.4%	—	0
Call · $17.5 Last $0.05 Breakeven $17.55 Implied vol 108.2% Delta 0.143 ≈14% ITM Gamma 0.077 Theta -0.023 Vega 0.005 Open interest 5 Model this call Put · $17.5 In the money Last — Breakeven — Implied vol 78.4% Delta -0.943 ≈94% ITM Gamma 0.059 Theta -0.007 Vega 0.003 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $20 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $20 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $22.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $22.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $25 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $25 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	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 — Delta — Gamma — Theta — Vega — 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 71829 CUSIP 651718504 13F (30d) 62 filings 62 filers Visit website Investor relations