SBLK (Star Bulk Carriers) Cyclically Adjusted Book per Share: $21.77 (As of Mar. 2026)

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Director of Data and Quant Analytics at GuruFocus
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SBLK Star Bulk Carriers Corp SBLK
69 GF Score
Price $26.35
GF Value $18.43
Valuation Significantly Overvalued
! 9 Warning Signs
View Full Analysis

What is Star Bulk Carriers Cyclically Adjusted Book per Share?

Star Bulk Carriers SBLK -0.79% 69 Cyclically Adjusted Book per Share is $21.77 as of Mar. 2026. GuruFocus rates SBLK with a GF Score™ of 69/100 and a GF Value™ of $18.43 (Significantly Overvalued). The stock has 9 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.

Star Bulk Carriers's adjusted book value per share for the three months ended in Mar. 2026 was $21.789. 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 $21.77 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Star Bulk Carriers's average Cyclically Adjusted Book Growth Rate was -5.60% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -14.50% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -27.10% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -28.30% 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.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Star Bulk Carriers was -13.80% per year. The lowest was -40.40% per year. And the median was -29.10% per year.

As of today (2026-07-16), Star Bulk Carriers's current stock price is $26.35. Star Bulk Carriers's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $21.77. Star Bulk Carriers's Cyclically Adjusted PB Ratio of today is 1.21.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Star Bulk Carriers was 1.25. The lowest was 0.01. And the median was 0.27.


Star Bulk Carriers  (NAS:SBLK) 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.

Star Bulk Carriers's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=26.35/21.77
=1.21

* 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 Star Bulk Carriers was 1.25. The lowest was 0.01. And the median was 0.27.


Be Aware

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


Star Bulk Carriers Cyclically Adjusted Book per Share Related Terms


Star Bulk Carriers Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Star Bulk Carriers'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.

Star Bulk Carriers Cyclically Adjusted Book per Share Chart

Star Bulk Carriers 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 65.59 34.57 27.06 24.03 21.64

Star Bulk Carriers Quarterly Data
Mar21 Jun21 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 23.05 22.48 22.04 21.64 21.77

SBLK vs ZIM, DAC, NMM: Cyclically Adjusted Book per Share Comparison

For the Marine Shipping subindustry, Star Bulk Carriers'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.


Star Bulk Carriers Cyclically Adjusted PB Ratio vs Transportation Industry

For the Transportation industry and Industrials sector, Star Bulk Carriers's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


SBLK
69GF Score
Star Bulk Carriers Corp SBLK
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Star Bulk Carriers 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, Star Bulk Carriers'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)
=21.789/124.8200*124.8200
=21.789

Current CPI (Mar. 2026) = 124.8200.

Star Bulk Carriers Quarterly Data

Book Value per Share CPI Adj_Book
201603 24.802 99.041 31.258
201606 24.017 100.121 29.942
201609 19.065 99.878 23.826
201612 18.316 100.110 22.837
201703 0.000 100.770 0.000
201706 16.847 101.138 20.792
201709 16.576 100.882 20.509
201712 16.958 100.762 21.007
201803 17.104 100.534 21.236
201806 17.113 102.121 20.917
201809 16.323 101.982 19.978
201812 16.471 101.330 20.289
201903 16.399 101.482 20.170
201906 16.087 101.837 19.718
201909 15.921 101.906 19.501
201912 16.073 102.120 19.646
202003 0.000 101.479 0.000
202006 15.549 100.239 19.362
202009 15.649 99.886 19.555
202012 15.951 99.751 19.960
202103 16.227 99.817 20.292
202106 17.183 101.270 21.179
202112 20.334 104.853 24.206
202203 20.186 108.651 23.190
202206 20.499 113.517 22.540
202209 0.000 114.371 0.000
202212 19.633 112.428 21.797
202303 19.349 113.620 21.256
202306 19.322 115.515 20.878
202309 19.451 116.234 20.888
202312 19.759 116.364 21.195
202403 20.134 117.285 21.428
202406 21.779 118.129 23.013
202409 21.305 119.650 22.226
202412 21.098 119.360 22.063
202503 21.002 120.133 21.821
202506 20.965 121.399 21.556
202509 21.162 121.950 21.660
202512 21.594 122.450 22.012
202603 21.789 124.820 21.789

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 $21.77 mean?
Star Bulk Carriers (SBLK) has a Cyclically Adjusted Book per Share of $21.77 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 Star Bulk Carriers and its competitors.
Is Star Bulk Carriers' Cyclically Adjusted Book per Share too high?
Star Bulk Carriers' current Cyclically Adjusted Book per Share is $21.77. Overall, Star Bulk Carriers has a GF Score™ of 69/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Star Bulk Carriers' Cyclically Adjusted Book per Share compare to ZIM and DAC?
Star Bulk Carriers' Cyclically Adjusted Book per Share of $21.77 can be compared against companies in the Transportation 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 Transportation company?
A good Cyclically Adjusted Book per Share depends on the Transportation 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 Star Bulk Carriers and its competitors. Star Bulk Carriers's current Cyclically Adjusted Book per Share is $21.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Star Bulk Carriers stock overvalued right now?
Based on GuruFocus' analysis, Star Bulk Carriers (SBLK) is currently considered Significantly Overvalued. The stock's GF Value™ is $18.43, compared to a current price of $26.35 — trading 43% above its estimated fair value. The current Cyclically Adjusted Book per Share is $21.77. Star Bulk Carriers' overall GF Score™ is 69/100 with 9 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 Star Bulk Carriers (SBLK), the current Cyclically Adjusted Book per Share is $21.77 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 Star Bulk Carriers (SBLK) Overvalued in 2026?

Based on GuruFocus' analysis, Star Bulk Carriers stock appears to be overvalued. The current stock price of $26.35 is trading 43% above its estimated GF Value™ of $18.43. GuruFocus considers Star Bulk Carriers to be Significantly Overvalued.

Key valuation signals for SBLK:

  • Cyclically Adjusted Book per Share: $21.77
  • GF Value™: $18.43 vs. price of $26.35 (43% above fair value)
  • GF Score™: 69/100 with 9 warning signs

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


Star Bulk Carriers Business Description

Other Exchanges 4FAP:Germany
Address c/o Star Bulk Management Inc, 40 Agiou Konstantinou Street, Maroussi, Athens, GRC, 15124
Star Bulk Carriers Corp provides seaborne transportation solutions in the dry bulk sector. The company owns and operates dry bulk carrier vessels, which are used to transport bulk, such as iron ore, coal, grains, bauxite, fertilizers, and steel products. It owns a fleet of vessels that consists of Newcastlemax, Capesize, Post Panamax, Kamsarmax, Panamax, Ultramax, and Supramax. The firm generates the majority of its revenue from Time charters and Voyage charters.
69GF Score

Get the complete analysis for SBLK

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

$26.35
Price
$18.43
GF Value