Stock fact sheet · data as of
Sunrun Inc. (RUN): fair value, margin of safety and Wheel Score
Ticker symbol RUN · Energy · Solar · United States · Value
Is RUN undervalued?
RUN closed at 8.79 on 5 Nov 2026 against a GLS average fair value of 9.48 - 7.3% below fair value, which our scans read as "fairly priced". 3 of 5 models are above the current price. There is no discount to lean on here, so the margin of safety is not the reason to look at the stock.
There is a wide gap between GLS Growth (1.75) and Graham Number (17.59). When the models are this far apart the "fair value" is really a range, and the margin of safety above should be read with that range in mind.
Ranked against every other company we cover, RUN is clearly cheaper than it is fast-growing, so the nightly engine files it under Value (value score 70, growth score 48, out of 100).
Nine valuation models for RUN
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 | - | - | Present value of the projected free cash flows, discounted at the cost of capital; no value tonight |
| Graham Number | 17.59 | +100% | The most a defensive investor pays for the earnings and book value per share |
| Graham Growth | 14.48 | +65% | Graham's growth formula: EPS × (8.5 + 2 × growth), adjusted for bond yields |
| Lynch | 3.59 | -59% | EPS × the earnings growth rate (PEG of 1), growth capped at 25% |
| GLS Growth | 1.75 | -80% | EPS compounded ten years at the blended growth rate, discounted back at 15% a year |
| 10 Cap | - | - | Owner's earnings (operating cash flow less maintenance capex) capitalised at 10%; no value tonight |
| Payback Time | - | - | Eight years of compounded free cash flow: the price at which the business pays for itself; no value tonight |
| DDM | - | - | Dividend discount model: next year's dividend ÷ (10% − 3% growth); needs a dividend; no value tonight |
| EPV | 9.98 | +13% | Earnings power value: current EPS capitalised at 9% with no growth |
| Zombie (liquidation) | -71.42 | -913% | Current assets less all liabilities, per share: the balance-sheet floor. Not in the average |
| Wall St target | 14.45 | +64% | Analysts' average 12-month price target. Not in the average |
Quality and financial health
Sunrun Inc. scores 6 of 9 on the Piotroski F-score: a middling result that passes the "Piotroski 6 or more" Wheel Trade Filter. Some of the nine tests on profitability, leverage and efficiency are failed, so the accounts are worth a look before selling a put on the name. A GLS Moat score of 1.4/10 is a weak reading: the accounts do not show returns and margins that competitors have been unable to wear down, so the Moat part of the Wheel Score contributes little.
Returns on capital are thin or negative - ROIC 2.5%, ROE 14.4%, ROA 1.9% - with debt at 4.75 times equity and negative free cash flow. Debt of 4.75 times equity is on the high side for the sector and is worth checking against the cash flow before treating the stock as a long-term hold.
Sunrun 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 Service 31%, Customer Agreements 29%, Product 19% (quarter Q2 FY2026).
Institutional ownership scores 10/10, insider activity 1/10 and Congressional trading 5/10 on the GLS smart-money scales.
| Piotroski F-score | 6 / 9 | ROIC | 2.5% |
|---|---|---|---|
| GLS Moat | 1.4 / 10 | ROE | 14.4% |
| Debt / equity | 4.75 | ROA | 1.9% |
| Free-cash-flow yield | -9.4% | Payout ratio | 0% |
| Institutions | 10 / 10 | Insiders · Congress | 1 · 5 / 10 |
Wheel Score 24: Weak
With a Wheel Score of 24 Sunrun Inc. sits in the Weak band. It fails filter 5, can repay its debt - debt with no positive cash flow to repay it; and filter 7, a premium worth selling - implied volatility 116% (over 80%); Premium (weak) is its weakest part.
Implied volatility is 116%, above the 80% ceiling of the Wheel Trade Filter on premium. The premium looks generous, but moves of that size can blow through any strike. The option chain is deep: 137,593 contracts of open interest across all expiries, which means tight fills at most strikes.
Volume runs at 31.9M shares a day on a market cap of $2.1B, with a beta of 2.35 - 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.
| Filter | Wheel Trade Filter | Result | Detail |
|---|---|---|---|
| 1 | Options that actually trade | Passes | Listed options with 1,000+ contracts of open interest and 100+ traded 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 | Fails | debt with no positive cash flow to repay 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 | Fails | implied volatility 116% (over 80%) |
| 8 | Big enough | Passes | Market cap $1 billion or more |
| 9 | Not a penny stock | Passes | Share price $5 or more |
| How it ranks | Rating | From | |
|---|---|---|---|
| Value | Weak | 7% below fair value | |
| Premium | Weak | implied volatility 116% | |
| Moat | Weak | moat 1.4/10 | |
| Health | Good | Piotroski 6/9 | |
| Red Flags | Good | Red Flags score 82/100 | |
| Option trading | Strong | 34,372 contracts a day, 137,593 open interest | |
| Stability | Weak | beta 2.35, $2.1B 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 RUN in the nightly calendar.
No analyst upgrades or downgrades were recorded in the last 30 days.
Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.
Similar stocks in Solar
The 12 companies below are the closest to Sunrun Inc. by market cap within the Solar 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 |
|---|---|---|---|---|---|
| SEDG SolarEdge Technologies, Inc. | 30.02 | 32.07 | +6% | 32Weak | $1.8B |
| SHLS Shoals Technologies Group, Inc. | 9.16 | 3.88 | -136% | 25Weak | $1.5B |
| ENPH Enphase Energy, Inc. | 31.55 | 14.46 | -118% | 32Weak | $4.2B |
| ARRY Array Technologies, Inc. | 5.33 | 18.61 | +71% | 38Weak | $820M |
| CSIQ Canadian Solar Inc. | 10.78 | - | - | 22Weak | $732M |
| NXT Nextpower Inc. | 106.70 | 81.28 | -31% | 37Weak | $16.2B |
| TOYO TOYO Co., Ltd. | 5.18 | 136.42 | +96% | 39Weak | $221M |
| FSLR First Solar, Inc. | 194.51 | 363.21 | +46% | 84Good | $20.9B |
| JKS Jinko Holdings Limited Sponsored ADR | 10.65 | 19,131.82 | +100% | 40Weak | $139M |
| TYGO Tigo Energy, Inc. | 0.9967 | 5.31 | +81% | 27No options | $77M |
| SPWR SunPower Inc. | 0.2420 | - | - | 9No options | $41M |
| SPRU Spruce Power Holding Corporation | 1.39 | 42.79 | +97% | 23Weak | $27M |
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A free GLS Equity account gets you nightly fair value and the Wheel Score on ~7,400 US stocks, a watchlist, the scanner preview and the Sunday Scan - the top 10 stocks that pass all 9 Wheel Trade Filters, emailed every week. Pro adds the full put and call scanners, unlimited watchlists with alerts and the trade journal.
Start free See the Sunday ScanQuestions about RUN
Is RUN undervalued right now?
Not meaningfully: at 8.79 the stock trades within a few percent of the GLS average fair value of 9.48 (7.3% below fair value, data as of 5 Nov 2026).
What is the Wheel Score of RUN and what does it mean?
RUN scores 24 out of 100 (Weak) - it fails Wheel Trade Filters 5, 7. 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 RUN?
9.48 per share as of 5 Nov 2026 - the simple average of the 5 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 Sunrun Inc. report earnings next?
No upcoming earnings date is recorded for RUN in our calendar as of 5 Nov 2026; the Calendars page is refreshed every morning.
Does RUN have listed options, and how liquid are they?
Yes. The nightly snapshot found 154 listed contracts with 137,593 open interest across all expiries and implied volatility of 116% 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.