Stock fact sheet · data as of
NPK International Inc. (NPKI): fair value, margin of safety and Wheel Score
Ticker symbol NPKI · Basic Materials · Construction Materials · United States · Growth
Is NPKI undervalued?
At 9.04 (close of 5 Nov 2026), NPKI trades 23% under the GLS average fair value of 11.74. 4 of the 8 models that produced a value land above the price. A discount of this size counts as a positive margin of safety in every GLS scan; whether it is enough depends on the rest of the picture - the health score, the moat and the option premium below.
The 8 models disagree widely: DCF gives 0.5879 while GLS Growth gives 28.47. A spread that wide means the average is sensitive to which methods you trust; the model table below shows where each one lands, and the Quote page lets you switch any of them off.
Ranked against every other company we cover, NPKI is clearly faster-growing than it is cheap, so the nightly engine files it under Growth (value score 44, growth score 85, out of 100).
Nine valuation models for NPKI
Each model turns the latest filed numbers into a value per share; the GLS fair value is the simple average of the ones that produce a positive number. The last two rows are shown for reference and never enter the average. The Quote page lets you switch any model off and add your own margin of safety.
| Model | Value | vs price | What it measures |
|---|---|---|---|
| DCF | 0.5879 | -93% | Present value of the projected free cash flows, discounted at the cost of capital |
| Graham Number | 6.74 | -25% | The most a defensive investor pays for the earnings and book value per share |
| Graham Growth | 26.60 | +194% | Graham's growth formula: EPS × (8.5 + 2 × growth), adjusted for bond yields |
| Lynch | 11.63 | +29% | EPS × the earnings growth rate (PEG of 1), growth capped at 25% |
| GLS Growth | 28.47 | +215% | EPS compounded ten years at the blended growth rate, discounted back at 15% a year |
| 10 Cap | 9.47 | +5% | Owner's earnings (operating cash flow less maintenance capex) capitalised at 10% |
| Payback Time | 5.25 | -42% | Eight years of compounded free cash flow: the price at which the business pays for itself |
| DDM | - | - | Dividend discount model: next year's dividend ÷ (10% − 3% growth); needs a dividend; no value tonight |
| EPV | 5.17 | -43% | Earnings power value: current EPS capitalised at 9% with no growth |
| Zombie (liquidation) | -0.1086 | -101% | Current assets less all liabilities, per share: the balance-sheet floor. Not in the average |
| Wall St target | 0.0000 | -100% | Analysts' average 12-month price target. Not in the average |
Quality and financial health
Financial health is average - NPKI passes 6 of the nine Piotroski tests, which passes the "Piotroski 6 or more" Wheel Trade Filter. The Financials tab on the Quote page shows which tests fail. The GLS Moat score is low at 4.9 out of 10: returns on capital, margins or the balance sheet have not shown a lasting edge yet - often a young company, a thin-margin business or one that has only recently turned profitable.
Returns on capital are moderate - ROIC 9.3%, ROE 10.2%, ROA 8.1% - with debt at 0.10 times equity and a free-cash-flow yield of 1.5%.
NPK International Inc. pays no dividend, so the DDM model does not apply and a covered-call holder earns only the premium and any price gain. Revenue comes mainly from Industrial Solution 100% (quarter Q3 FY2026).
Institutional ownership scores 5/10, insider activity 1/10 and Congressional trading 5/10 on the GLS smart-money scales; the last recorded insider buy was on 2 Nov 2026.
| Piotroski F-score | 6 / 9 | ROIC | 9.3% |
|---|---|---|---|
| GLS Moat | 4.9 / 10 | ROE | 10.2% |
| Debt / equity | 0.10 | ROA | 8.1% |
| Free-cash-flow yield | 1.5% | Payout ratio | 0% |
| Institutions | 5 / 10 | Insiders · Congress | 1 · 5 / 10 |
Wheel Score 42: Weak
NPKI scores 42 out of 100 on the Wheel Score, in the Weak band (under 50): it fails filter 1, options that actually trade - options too quiet (453 open interest, 239 a day); and filter 8, big enough - market cap $759M (under $1.0B), and the parts are thin too - value good, premium strong, moat fair, health good, red flags good, option trading weak, stability fair. The score is not a judgement on the company; it says the price, quality and premium do not line up for selling puts on it today.
Implied volatility is 67% on the near-the-money contracts 20-60 days out - above the 60% top of the sweet spot. It still passes the 25-80% filter, but the Wheel Score rewards it less because volatility this high usually comes with a reason. Chain open interest is thin - 453 contracts across every expiry - so fills at a fair price are not guaranteed; a 30-45-day put may not exist at a usable strike.
Volume runs at 1.8M shares a day on a market cap of $759M, with a beta of 1.30 - a high beta, so the stock tends to move more than the market and a strike can be gapped through; the Stability part of the Wheel Score rates that fair.
| Filter | Wheel Trade Filter | Result | Detail |
|---|---|---|---|
| 1 | Options that actually trade | Fails | options too quiet (453 open interest, 239 a day) |
| 2 | A real business, not a gamble | Passes | Profitable over the last twelve months - not a speculative stock, fund or note |
| 3 | Below fair value | Passes | Trading below the nine-model average fair value (margin of safety above 0) |
| 4 | Financially healthy | Passes | Piotroski F-score 6 or more out of 9 (a company with no score on file passes) |
| 5 | Can repay its debt | Passes | Long-term debt repaid from 3 years of operating cash flow or less (6 for real estate and utilities; banks and insurers are not judged on it) |
| 6 | No serious red flags | Passes | Red Flags score 60 or more out of 100 (earnings, margins, debt, analysts, filings and price checked the same way for every stock) |
| 7 | A premium worth selling | Passes | Implied volatility 25-80% (enough premium, not a lottery ticket) |
| 8 | Big enough | Fails | market cap $759M (under $1.0B) |
| 9 | Not a penny stock | Passes | Share price $5 or more |
| How it ranks | Rating | From | |
|---|---|---|---|
| Value | Good | 23% below fair value | |
| Premium | Strong | implied volatility 67% | |
| Moat | Fair | moat 4.9/10 | |
| Health | Good | Piotroski 6/9 | |
| Red Flags | Good | Red Flags score 82/100 | |
| Option trading | Weak | 239 contracts a day, 453 open interest | |
| Stability | Fair | beta 1.30, $759M company |
The Wheel Score ranks ~7,400 US stocks for selling cash-secured puts and covered calls: a stock must pass all 9 Wheel Trade Filters to score 70, and the score then ranks the ones that pass; the Sunday Scan is the top 10. It is updated nightly and is not a recommendation. How the Wheel Score works · the walkthrough lesson shows how it fits into a trade, start to finish.
Upcoming events
No upcoming earnings date is recorded for NPKI in the nightly calendar.
Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.
Similar stocks in Construction Materials
The 12 companies below are the closest to NPK International Inc. by market cap within the Construction Materials industry, each with its own fact sheet; the Compare page puts up to eight of them side by side.
| Stock | Close | Fair value | MoS | Wheel | Mkt cap |
|---|---|---|---|---|---|
| LMB Limbach Holdings, Inc. | 58.11 | 86.09 | +32% | 46Weak | $693M |
| JBI Janus International Group, Inc. | 5.00 | 6.57 | +24% | 42Weak | $682M |
| NWPX NWPX Infrastructure, Inc. | 91.93 | 119.18 | +23% | 47Weak | $885M |
| SWIM Latham Group, Inc. | 8.18 | 3.91 | -109% | 18Weak | $962M |
| APOG Apogee Enterprises, Inc. | 47.99 | 62.88 | +24% | 79Good | $1.0B |
| MCEM The Monarch Cement Company | 272.00 | 361.65 | +25% | 34No options | $1.0B |
| NX Quanex Building Products Corporation | 22.58 | 24.17 | +7% | 40Weak | $1.0B |
| LOMA Loma Negra Compañía Industrial Argentina Sociedad Anónima | 8.91 | 7.33 | -22% | 33Weak | $1.0B |
| CPAC Cementos Pacasmayo S.A.A. | 12.73 | 19.50 | +35% | 37No options | $1.1B |
| TGLS Tecnoglass Inc. | 42.81 | 40.53 | -6% | 30Weak | $1.9B |
| RMIX Suncrete, Inc. Class A Common Stock | 11.71 | - | - | 16No options | $274M |
| TTAM Titan America S.A. | 14.30 | 22.31 | +36% | 43Weak | $2.6B |
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Start free See the Sunday ScanQuestions about NPKI
Is NPKI undervalued right now?
By the GLS models, moderately: at 9.04 the stock trades 23% below the average fair value of 11.74 (data as of 5 Nov 2026).
What is the Wheel Score of NPKI and what does it mean?
NPKI scores 42 out of 100 (Weak) - it fails Wheel Trade Filters 1, 8. The Wheel Score ranks stocks for the wheel strategy - selling cash-secured puts, then covered calls if assigned - in two parts: the 9 pass/fail Wheel Trade Filters (busy options, a real business, below fair value, Piotroski 6 or more, debt it can repay, a Red Flags score of 60 or more, implied volatility of 25-80%, a $1 billion company, $5 a share) and a ranking of how strongly a stock passes on value, premium, moat, health, red flags, option trading and stability. A stock that fails any filter stays under 70; 70-84 is Good, 85 and above is Prime. The Sunday Scan is the top 10 that pass, sorted by Wheel Score.
What is the GLS fair value for NPKI?
11.74 per share as of 5 Nov 2026 - the simple average of the 8 valuation models (out of nine: DCF, Graham Number, Graham Growth, Lynch, GLS Growth, 10 Cap, Payback Time, DDM and EPV) that produced a positive value. The models run every night on the latest filings; the Quote page lets you switch any of them off and add a margin of safety of your own.
When does NPK International Inc. report earnings next?
No upcoming earnings date is recorded for NPKI in our calendar as of 5 Nov 2026; the Calendars page is refreshed every morning.
Does NPKI have listed options, and how liquid are they?
Yes. The nightly snapshot found 12 listed contracts with 453 open interest across all expiries and implied volatility of 67% on the near-the-money contracts. The Options scanner lists the cash-secured put and covered call set-ups with premium and annualised yield worked out.