Northwest BiotherapeuticsNWBO -0.58%17 Piotroski F-Score is 4 as of Jun. 25, 2026, which is 33% above its 10-year median of 3.00. GuruFocus rates NWBO with a GF Score™ of 17/100. The stock has 5 warning signs investors should review. Among 1,341 Biotechnology companies, Northwest Biotherapeutics ranks better than 74.2% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Northwest Biotherapeutics has an F-score of 4 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Northwest Biotherapeutics's Piotroski F-Score or its related term are showing as below:
NWBO'
s Piotroski F-Score Range Over the Past 10 Years
Min: 1 Med: 3 Max: 5
Current: 4
During the past 13 years, the highest Piotroski F-Score of Northwest Biotherapeutics was 5. The lowest was 1. And the median was 3.
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Northwest Biotherapeutics Piotroski F-Score Related Terms
Northwest Biotherapeutics Piotroski F-Score Historical Data
* 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.
NWBO vs PROK, AVIR, IMRX: Piotroski F-Score Comparison
For the Biotechnology subindustry, Northwest Biotherapeutics's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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.
Northwest Biotherapeutics Piotroski F-Score vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Northwest Biotherapeutics's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Northwest Biotherapeutics's Piotroski F-Score falls into.
* 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.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Northwest Biotherapeutics's current Net Income (TTM) was -43.89.
==> Negative ==> Score 0.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Northwest Biotherapeutics's current Cash Flow from Operations (TTM) was -47.85.
==> Negative ==> Score 0.
Question 3. Change in Return on Assets
Compare this year's return on assets (1) to last year's return on assets.
Northwest Biotherapeutics's return on assets of this year was -1.59563716. Northwest Biotherapeutics's return on assets of last year was -2.96877516.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Northwest Biotherapeutics's gearing of this year was 0.41168344. Northwest Biotherapeutics's gearing of last year was 0.87583544.
==> This year is lower or equal to last year. ==> Score 1.
Question 6. Change in Working Capital (Liquidity)
Compare this year's current ratio (current assets divided by current liabilities) to last year's current ratio.
Score 1 if this year's current ratio is higher, 0 if it's lower
Northwest Biotherapeutics's current ratio of this year was 0.07474721. Northwest Biotherapeutics's current ratio of last year was 0.05641773.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Northwest Biotherapeutics's number of shares in issue this year was 1584.843. Northwest Biotherapeutics's number of shares in issue last year was 1359.496.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Northwest Biotherapeutics's gross margin of this year was 1. Northwest Biotherapeutics's gross margin of last year was 1.
==> Last year's gross margin is higher ==> Score 0.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Northwest Biotherapeutics's asset turnover of this year was 0.05442647. Northwest Biotherapeutics's asset turnover of last year was 0.05156299.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
=
Que. 1
+
Que. 2
+
Que. 3
+
Que. 4
+
Que. 5
+
Que. 6
+
Que. 7
+
Que. 8
+
Que. 9
=
0
+
0
+
1
+
0
+
1
+
1
+
0
+
0
+
1
=
4
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Northwest Biotherapeutics has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Northwest Biotherapeutics (NWBO) has a Piotroski F-Score of 4 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Northwest Biotherapeutics and its competitors. This is 33% above median its historical median of 3.00. Over the past decade, Northwest Biotherapeutics' Piotroski F-Score has ranged from 1.00 to 5.00. According to the industry distribution chart, Northwest Biotherapeutics ranks #346 out of 1341 companies in the Biotechnology industry, placing it in the top 25.8%.
Is Northwest Biotherapeutics' Piotroski F-Score too high?
Northwest Biotherapeutics' current Piotroski F-Score of 4 is 33% above median its 10-year median of 3.00. Over the past 10 years, this metric has ranged from a low of 1.00 to a high of 5.00. The Biotechnology industry median Piotroski F-Score is 3.00. Northwest Biotherapeutics' value of 4 is 33.3% above this industry median. Based on the distribution chart, Northwest Biotherapeutics ranks #346 out of 1341 companies in the Biotechnology industry, which is above the industry midpoint. Overall, Northwest Biotherapeutics has a GF Score™ of 17/100, reflecting its overall financial health beyond just this single metric.
How does Northwest Biotherapeutics' Piotroski F-Score compare to PROK and AVIR?
According to the Biotechnology industry distribution chart, Northwest Biotherapeutics ranks #346 out of 1341 companies for Piotroski F-Score. This puts Northwest Biotherapeutics in the upper half of its industry. The industry median Piotroski F-Score is 3.00. Northwest Biotherapeutics' value of 4 is 33.3% above this benchmark. Historically, Northwest Biotherapeutics' own Piotroski F-Score has ranged from 1.00 to 5.00 over the past decade. While the company's 10-year median is 3.00 vs. the industry median of 3.00, Northwest Biotherapeutics has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Piotroski F-Score for a Biotechnology company?
The median Piotroski F-Score among Biotechnology companies is 3.00, based on 1,341 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Northwest Biotherapeutics's current Piotroski F-Score of 4 is 33.3% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Northwest Biotherapeutics and its competitors. For the Biotechnology industry, the median Piotroski F-Score is 3.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Northwest Biotherapeutics's current Piotroski F-Score is 4, which is 33% above median its own 10-year median of 3.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Northwest Biotherapeutics stock overvalued right now?
Northwest Biotherapeutics (NWBO) has a current Piotroski F-Score of 4. The current Piotroski F-Score is 4, which is 33% above median its 10-year median of 3.00 and 33.3% above the Biotechnology industry median of 3.00. Northwest Biotherapeutics' overall GF Score™ is 17/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Northwest Biotherapeutics (NWBO), the current Piotroski F-Score is 4 as of Jun. 25, 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.
Northwest Biotherapeutics Inc a biotechnology company focused on developing personalized immune therapies for cancer. The target is a broad range of solid-tumor cancers. The company has a proprietary manufacturing technology, which it uses to produce a personalized vaccine. The product portfolio includes product candidates such as DCVax-L, for patients with brain cancer; DCVax-Direct, direct injection into all types of inoperable solid tumor cancers, and DCVax for late-stage ovarian cancer. DCVax-Prostate, for late-stage prostate cancer, has received clearance from the U.S Food and Drug Administration.
17GF Score
Get the complete analysis for NWBO
Piotroski F-Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
NWBO has been successfully added to your 
