Rubrik, Inc. (RBRK): fair value, margin of safety and Wheel Score

Is RBRK undervalued?

Rubrik, Inc. (RBRK) closed at 113.90 on 16 Oct 2026, 234% above the GLS average fair value of 34.09. 1 of the 1 models that produced a number value the shares below the current price. A gap this wide usually means the market is paying for growth or a story the trailing numbers do not show yet; the models work from filed results, not forecasts, so they are conservative by design.

The average is built from just 1 models (10 Cap) - the rest returned nothing because an input they need (dividends, free cash flow, book value) is zero or negative - so treat it with more caution than usual.

The nightly engine files RBRK under Speculative / Distressed - negative earnings or a Piotroski score of 3 or less - which caps its Wheel Score at 45 and keeps it out of the Sunday Scan.

Nine valuation models for RBRK

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

Rubrik, Inc. scores only 2 of 9 on the Piotroski F-score, which fails the Sunday Scan's "6 or more" rule. A reading this low means several of the basic tests - positive earnings, positive operating cash flow, falling debt, no new share issuance - are not met. A GLS Moat score of 3.8/10 is a weak reading: the ten-year history the score grades (revenue, EPS, book value, margins, cash flow, share count, ROIC) has not been steady, so the Moat part of the Wheel Score contributes little.

Returns on capital are thin or negative - ROIC -57.1%, ROE 67.1%, ROA -12.6% - with debt at -2.18 times equity and a free-cash-flow yield of 1.4%.

Rubrik, 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 Subscription and Circulation 95%, Product and Service, Other 5% (quarter Q2 FY2027).

Institutional ownership scores 8/10, insider activity 1/10 and Congressional trading 5/10 on the GLS smart-money scales; the last recorded insider buy was on 15 Sep 2026.

Wheel Score 45: Weak

With a Wheel Score of 45 Rubrik, Inc. sits in the Weak band, capped at 45 because the engine files it as Speculative / Distressed. The parts - Value 0/25, Health 4/20, Moat 6/15, Premium 19/20, Stability 20/20 - show where: Value (0/25) scores lowest.

Implied volatility is 66% on the near-the-money contracts 20-60 days out - above the 60% ceiling of the sweet spot. Premiums are large, but the Wheel Score tapers the Premium points (19 of 20) because volatility this high usually comes with a reason. The option chain is deep: 71,996 contracts of open interest across all expiries, which means tight fills at most strikes.

Volume runs at 2.8M shares a day on a market cap of $23.4B, with a beta of 1.12; the Stability part of the Wheel Score gives that 20 of 20.

The Wheel Score ranks ~7,400 US stocks for selling cash-secured puts and covered calls; it is updated nightly and is not a recommendation. The walkthrough lesson shows how the score fits into a trade, start to finish.

Upcoming events

The next earnings report is due on 3 Dec 2026, 48 days away - outside the window of a 30-45-day put sold today.

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

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