SPRO (Spero Therapeutics) OCF Yield %: 6.19 (As of Jun. 26, 2026)


SPRO Spero Therapeutics Inc SPRO
55 GF Score
Price $2.02
GF Value $1.06
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Spero Therapeutics OCF Yield %?

Spero Therapeutics SPRO -4.04% 55 OCF Yield % is 6.19 as of Jun. 26, 2026. GuruFocus rates SPRO with a GF Score™ of 55/100 and a GF Value™ of $1.06 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 1,419 Biotechnology companies, Spero Therapeutics ranks better than 91.9% on this metric.

OCF Yield % is calculated as Cash Flow from Operations divided by Market Capitalization. It is a financial solvency ratio that compares the operating cash flow a company is expected to earn against its market value.

As of today, Spero Therapeutics's Trailing 12-Month Cash Flow from Operations is $7.24 Mil, and Market Cap is $116.96 Mil. Therefore, Spero Therapeutics's OCF Yield % for today is 6.19%.

The historical rank and industry rank for Spero Therapeutics's OCF Yield % or its related term are showing as below:

SPRO' s OCF Yield % Range Over the Past 10 Years
Min: -348.66   Med: -21.85   Max: 53.9
Current: 6.19


During the past 11 years, the highest OCF Yield % of Spero Therapeutics was 53.90%. The lowest was -348.66%. And the median was -21.85%.

SPRO's OCF Yield % is ranked better than
91.9% of 1419 companies
in the Biotechnology industry
Industry Median: -8.48 vs SPRO: 6.19

Spero Therapeutics's OCF Margin % for the quarter that ended in Mar. 2026 was %.


Spero Therapeutics OCF Yield % Explanation

Similar to Earnings Yield %, OCF Yield % is financial solvency ratio. A lower ratio suggests a less attractive investment, indicating that investors might not receive substantial returns in proportion to their investment. Conversely, a high operating cash flow yield signals that a company generates sufficient cash to comfortably meet its debts, obligations, and dividend payments, making it a promising investment choice.


Spero Therapeutics OCF Yield % Related Terms


Spero Therapeutics OCF Yield % Historical Data

* Premium members only.

The historical data trend for Spero Therapeutics's OCF Yield % 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.

Spero Therapeutics OCF Yield % Chart

Spero Therapeutics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
OCF Yield %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -12.41 -8.52 -42.35 -41.69 -9.60

Spero Therapeutics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
OCF Yield % 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 -39.77 -43.43 65.83 -25.41 46.84

SPRO vs ORMP, PLYX, HRTX: OCF Yield % Comparison

For the Biotechnology subindustry, Spero Therapeutics's OCF Yield %, along with its competitors' market caps and OCF Yield % 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.


Spero Therapeutics OCF Yield % vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Spero Therapeutics's OCF Yield % distribution charts can be found below:

* The bar in red indicates where Spero Therapeutics's OCF Yield % falls into.


SPRO
55GF Score
Spero Therapeutics Inc SPRO
OCF Yield % is just one metric. See GF Score™, valuation, warning signs, and more.
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Spero Therapeutics OCF Yield % Calculation

OCF Yield % is a financial solvency ratio that compares the operating cash flow a company is expected to earn against its market value.

Spero Therapeutics's OCF Yield % for the fiscal year that ended in Dec. 2025 is calculated as

OCF Yield %=Cash Flow from Operations / Market Cap
=-12.624 / 131.44695
=-9.60%

Spero Therapeutics's annualized OCF Yield % for the quarter that ended in Mar. 2026 is calculated as

OCF Yield %=Cash Flow from Operations * Annualized Factor / Market Cap
=15.864 * 4 / 135.46494
=46.84%

* 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.

Frequently Asked Questions Learn more about OCF Yield % →
What does a OCF Yield % of 6.19 mean?
Spero Therapeutics (SPRO) has a OCF Yield % of 6.19 as of Jun. 26, 2026. OCF Yield is calculated as Cash Flow from Operations divided by Market Capitalization. View historical data on Spero Therapeutics and its competitors. According to the industry distribution chart, Spero Therapeutics ranks #115 out of 1419 companies in the Biotechnology industry, placing it in the top 8.1%.
Is Spero Therapeutics' OCF Yield % too high?
Spero Therapeutics' current OCF Yield % is 6.19. Based on the distribution chart, Spero Therapeutics ranks #115 out of 1419 companies in the Biotechnology industry, which is in the top quartile — a strong position relative to peers. Overall, Spero Therapeutics has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Spero Therapeutics' OCF Yield % compare to ORMP and PLYX?
According to the Biotechnology industry distribution chart, Spero Therapeutics ranks #115 out of 1419 companies for OCF Yield %. This places Spero Therapeutics in the top 8% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good OCF Yield % for a Biotechnology company?
A good OCF Yield % depends on the Biotechnology industry context. However, OCF Yield % 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 OCF Yield % mean?
A high OCF Yield % can signal that a stock is expensive relative to its fundamentals. OCF Yield is calculated as Cash Flow from Operations divided by Market Capitalization. View historical data on Spero Therapeutics and its competitors. Spero Therapeutics's current OCF Yield % is 6.19. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Spero Therapeutics stock overvalued right now?
Based on GuruFocus' analysis, Spero Therapeutics (SPRO) is currently considered Significantly Overvalued. The stock's GF Value™ is $1.06, compared to a current price of $2.02 — trading 90.6% above its estimated fair value. The current OCF Yield % is 6.19. Spero Therapeutics' overall GF Score™ is 55/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is OCF Yield % calculated?
OCF Yield % is calculated from a company's financial statements. For Spero Therapeutics (SPRO), the current OCF Yield % is 6.19 as of Jun. 26, 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 Spero Therapeutics (SPRO) Overvalued in 2026?

Based on GuruFocus' analysis, Spero Therapeutics stock appears to be overvalued. The current stock price of $2.02 is trading 90.6% above its estimated GF Value™ of $1.06. GuruFocus considers Spero Therapeutics to be Significantly Overvalued.

Key valuation signals for SPRO:

  • OCF Yield %: 6.19
  • GF Value™: $1.06 vs. price of $2.02 (90.6% above fair value)
  • GF Score™: 55/100 with 4 warning signs

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


Spero Therapeutics Business Description

Other Exchanges 2HA:Germany
Address 675 Massachusetts Avenue, 14th Floor, Cambridge, MA, USA, 02139
Spero Therapeutics Inc is a clinical-stage biopharmaceutical firm. It focuses on identifying, developing, and commercializing novel treatments for MDR (Multi-drug-resistant) bacterial infections and rare diseases. The company's product candidate, tebipenem pivoxil hydrobromide or tebipenem HBr, is designed to be an oral carbapenem-class antibiotic for use in adults to treat MDR Gram-negative infections. It is also developing SPR720, a novel oral antibiotic designed for the treatment of a rare, orphan disease caused by pulmonary non-tuberculous mycobacterial infections, or NTM disease. It is also focused on SPR206, a next-generation polymyxin investigational product candidate being developed as an IV-administered medicine to treat MDR Gram-negative infections in the hospital.
55GF Score

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OCF Yield % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$2.02
Price
$1.06
GF Value