MannKind (STU:NNFN) Margin of Safety % (DCF Earnings Based): N/A (As of Aug. 20, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

STU:NNFN MannKind Corp STU:NNFN
71 GF Score
Price €3.73
GF Value €6.46
Valuation Possible Value Trap
! 8 Warning Signs
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What is MannKind Margin of Safety % (DCF Earnings Based)?

Margin of Safety % (DCF Earnings Based) = (Intrinsic Value: DCF (Earnings Based) - Current Price) / Intrinsic Value: DCF (Earnings Based).

Note: Discounted Earnings model is only suitable for predictable companies (Business Predictability Rank higher than 1-Star). If the company's Predictability Rank is 1-Star or Not Rated, result may not be accurate due to the low predictability of business and the data will not be stored into our database.

MannKind's Predictability Rank is 1-Star. Thus, the DCF related results in the screener and portfolio will appear as zero and Margin of Safety % (DCF Earnings Based) is not calculated.

STU:NNFN vs ABSI, ORIC, ARDX: Margin of Safety % (DCF Earnings Based) Comparison

For the Biotechnology subindustry, MannKind's Margin of Safety % (DCF Earnings Based), along with its competitors' market caps and Margin of Safety % (DCF Earnings Based) 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.

MannKind Margin of Safety % (DCF Earnings Based) vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, MannKind's Margin of Safety % (DCF Earnings Based) distribution charts can be found below:

* The bar in red indicates where MannKind's Margin of Safety % (DCF Earnings Based) falls into.


STU:NNFN
71GF Score
MannKind Corp STU:NNFN
Margin of Safety % (DCF Earnings Based) is just one metric. See GF Score™, valuation, warning signs, and more.
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Is MannKind (STU:NNFN) Overvalued in 2026?

Based on GuruFocus' analysis, MannKind stock appears to be undervalued. The current stock price of €3.73 is trading 42.2% below its estimated GF Value™ of €6.46. GuruFocus considers MannKind to be Possible Value Trap.

Key valuation signals for STU:NNFN:

  • Margin of Safety % (DCF Earnings Based): N/A
  • GF Value™: €6.46 vs. price of €3.73 (42.2% below fair value)
  • GF Score™: 71/100 with 8 warning signs

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

MannKind Business Description

Other Exchanges MNKD:USA
Address 1 Casper Street, Danbury, CT, USA, 06810
MannKind Corp is a biopharmaceutical company focused on the development and commercialization of patient-centric therapies that address serious unmet medical needs for those living with cardiometabolic and orphan lung diseases. The Company is currently commercializing three products: Afrezza (insulin human) Inhalation Powder, an ultra rapid-acting inhaled insulin indicated to improve glycemic control in adults with diabetes; Furoscix (furosemide injection), to treat fluid buildup in patients with chronic heart failure or chronic kidney disease; and the V-Go wearable insulin delivery device, which provides continuous subcutaneous infusion of insulin in adults that require insulin.
71GF Score

Get the complete analysis for STU:NNFN

Margin of Safety % (DCF Earnings Based) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€3.73
Price
€6.46
GF Value