ZeroStack Corp. (ZSTK): fair value, margin of safety and Wheel Score

Is ZSTK undervalued?

ZeroStack Corp. (ZSTK) closed at 2.93 on 5 Nov 2026. None of the nine GLS valuation models produced a positive value for the stock - the company lost money over the last twelve months, EPS -17.85, it pays no dividend and its debts exceed what its assets would fetch - so there is no GLS average fair value and no margin of safety to report. The quality, option and event numbers below still apply; the Quote page's Wall Street View shows what analysts expect instead.

The nightly engine files ZSTK under Speculative - it is losing money or its Piotroski health score is 3 or lower - which caps its Wheel Score at 45 and keeps it out of the Sunday Scan.

Nine valuation models for ZSTK

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.

Quality and financial health

Financial health is weak: ZSTK passes 2 of the nine Piotroski tests. Our scans drop the stock at the health filter; a low score is often the reason a stock looks cheap on the valuation models. The GLS Moat score is low at 1.4 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 thin or negative - ROIC -97.1%, ROE -171.3%, ROA -92.8% - with debt at 0.76 times equity and negative free cash flow.

ZeroStack Corp. 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 Pharmaceuticals and Nutraceuticals 100% (fiscal year FY2021).

Institutional ownership scores 1/10, insider activity 10/10 and Congressional trading 5/10 on the GLS smart-money scales.

Wheel Score 9: No options

ZSTK has no listed options in the nightly snapshot, so there is nothing to sell and the stock cannot be wheeled however good the business. It fails the first Wheel Trade Filter (options that actually trade), so the score stays under 70 and is shown as "No options" (9 here). The valuation and quality numbers still apply to owning the shares outright.

Volume runs at 30k shares a day on a market cap of $64M, with a beta of 1.71 - 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 weak.

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

ZeroStack Corp. reports earnings on 11 Nov 2026 (after the close) - inside the 14-day window the Sunday Scan avoids, because a put sold now would carry the report's gap risk.

Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.

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