v3.26.1
Note 6 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

Fair Value Measurements at June 30, 2026

 
  

Quoted Prices in

  

Other

  

Significant

     
  

Active Markets for

  

Observable

  

Unobservable

     
  

Identical Assets

  

Inputs

  

Inputs

     
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Total

 

Short-term investment in marketable equity securities, at fair value (asset)

 $4,361,070  $  $  $4,361,070 

Long-term investment in marketable equity securities, at fair value (asset)

  5,279,384         5,279,384 

Derivative liabilities -Series A warrants

        55,000   55,000 

Total

 $9,640,454  $  $55,000  $9,695,454 
  

Fair Value Measurements at December 31, 2025

 
  

Quoted Prices in

  

Other

  

Significant

     
  

Active Markets for

  

Observable

  

Unobservable

     
  

Identical Assets

  

Inputs

  

Inputs

     
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Total

 

Derivative liabilities -Series A

 $  $  $50,000  $50,000 

Total

 $  $  $50,000  $50,000 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

June 30, 2026

  

December 31, 2025

 

Exercise price

 $  $ 

Stock price

 $0.8913  $0.8138 

Expected term (years)

  3.25   3.75 

Volatility

  150.58%  140.18%

Risk-free rate

  4.15%  3.64%

Dividend yield

  0.00%  0.00%

Probability of capital raise below exercise price

  100.00%  100.00%
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Amount

 

Balance as of December 31, 2025

 $50,000 

Change in fair value of warrant liabilities

  5,000 

Balance as of June 30, 2026

 $55,000