RUN (Sunrun) Cyclically Adjusted Book per Share: $19.30 (As of Mar. 2026)


RUN Sunrun Inc RUN
71 GF Score
Price $13.48
GF Value $15.02
Valuation Modestly Undervalued
! 6 Warning Signs
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What is Sunrun Cyclically Adjusted Book per Share?

Sunrun RUN -0.07% 71 Cyclically Adjusted Book per Share is $19.30 as of Mar. 2026. GuruFocus rates RUN with a GF Score™ of 71/100 and a GF Value™ of $15.02 (Modestly Undervalued). The stock has 6 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Sunrun's adjusted book value per share for the three months ended in Mar. 2026 was $14.185. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $19.30 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Sunrun's average Cyclically Adjusted Book Growth Rate was 6.90% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

As of today (2026-06-29), Sunrun's current stock price is $13.48. Sunrun's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $19.30. Sunrun's Cyclically Adjusted PB Ratio of today is 0.70.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Sunrun was 1.25. The lowest was 0.34. And the median was 0.72.


Sunrun  (NAS:RUN) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Sunrun's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=13.48/19.30
=0.70

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Sunrun was 1.25. The lowest was 0.34. And the median was 0.72.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Sunrun Cyclically Adjusted Book per Share Related Terms


Sunrun Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Sunrun's Cyclically Adjusted Book per Share can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Sunrun Cyclically Adjusted Book per Share Chart

Sunrun Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 16.48 17.65 18.78

Sunrun Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 18.06 18.41 18.67 18.78 19.30

RUN vs SEDG, SHLS, ARRY: Cyclically Adjusted Book per Share Comparison

For the Solar subindustry, Sunrun's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Sunrun Cyclically Adjusted PB Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Sunrun's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Sunrun's Cyclically Adjusted PB Ratio falls into.


RUN
71GF Score
Sunrun Inc RUN
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Sunrun Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Sunrun's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=14.185/330.2130*330.2130
=14.185

Current CPI (Mar. 2026) = 330.2130.

Sunrun Quarterly Data

Book Value per Share CPI Adj_Book
201606 5.902 241.018 8.086
201609 6.100 241.428 8.343
201612 6.451 241.432 8.823
201703 6.625 243.801 8.973
201706 6.808 244.955 9.178
201709 7.067 246.819 9.455
201712 8.212 246.524 11.000
201803 8.600 249.554 11.380
201806 8.674 251.989 11.367
201809 8.659 252.439 11.327
201812 8.385 251.233 11.021
201903 8.058 254.202 10.467
201906 7.812 256.143 10.071
201909 7.860 256.759 10.109
201912 8.145 256.974 10.466
202003 7.263 258.115 9.292
202006 7.262 257.797 9.302
202009 8.103 260.280 10.280
202012 30.177 260.474 38.257
202103 30.288 264.877 37.759
202106 29.977 271.696 36.433
202109 30.080 274.310 36.210
202112 30.045 278.802 35.585
202203 29.913 287.504 34.357
202206 29.945 296.311 33.371
202209 31.079 296.808 34.577
202212 31.319 296.797 34.845
202303 30.059 301.836 32.885
202306 30.397 305.109 32.898
202309 25.773 307.789 27.651
202312 23.840 306.746 25.664
202403 23.476 312.332 24.820
202406 24.030 314.175 25.257
202409 23.553 315.301 24.667
202412 11.319 315.605 11.843
202503 11.505 319.799 11.880
202506 12.707 322.561 13.008
202509 12.884 324.800 13.099
202512 13.409 324.054 13.664
202603 14.185 330.213 14.185

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of $19.30 mean?
Sunrun (RUN) has a Cyclically Adjusted Book per Share of $19.30 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Sunrun and its competitors.
Is Sunrun's Cyclically Adjusted Book per Share too high?
Sunrun's current Cyclically Adjusted Book per Share is $19.30. Overall, Sunrun has a GF Score™ of 71/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Sunrun's Cyclically Adjusted Book per Share compare to SEDG and SHLS?
Sunrun's Cyclically Adjusted Book per Share of $19.30 can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Semiconductors company?
A good Cyclically Adjusted Book per Share depends on the Semiconductors industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Sunrun and its competitors. Sunrun's current Cyclically Adjusted Book per Share is $19.30. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sunrun stock overvalued right now?
Based on GuruFocus' analysis, Sunrun (RUN) is currently considered Modestly Undervalued. The stock's GF Value™ is $15.02, compared to a current price of $13.48 — trading 10.3% below its estimated fair value. The current Cyclically Adjusted Book per Share is $19.30. Sunrun's overall GF Score™ is 71/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Sunrun (RUN), the current Cyclically Adjusted Book per Share is $19.30 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Sunrun (RUN) Overvalued in 2026?

Based on GuruFocus' analysis, Sunrun stock appears to be undervalued. The current stock price of $13.48 is trading 10.3% below its estimated GF Value™ of $15.02. GuruFocus considers Sunrun to be Modestly Undervalued.

Key valuation signals for RUN:

  • Cyclically Adjusted Book per Share: $19.30
  • GF Value™: $15.02 vs. price of $13.48 (10.3% below fair value)
  • GF Score™: 71/100 with 6 warning signs

No single metric tells the full story. See the RUN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sunrun Business Description

Address 600 California Street, Suite 1800, San Francisco, CA, USA, 94108
Sunrun is engaged in the design, development, installation, sale, ownership, and maintenance of residential solar energy systems in the United States. The company acquires customers directly and through relationships with various solar and strategic partners. The solar systems are constructed by Sunrun or by Sunrun's partners and are owned by the company. Sunrun's customers typically enter into 20- to 25-year agreements to utilize its solar energy system. The company also sells solar energy systems and products, such as panels and racking, and solar leads generated to customers.
71GF Score

Get the complete analysis for RUN

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$13.48
Price
$15.02
GF Value