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Note 6 - Fair Value (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

ASSETS		LEVEL 1 QUOTED PRICES				LEVEL 2 OTHER SIGNIFICANT OBSERVABLE INPUTS				LEVEL 3 SIGNIFICANT OBSERVABLE INPUTS
Common Stocks
Advanced Materials		$	—			$	—			$	171,528
Total Common Stocks			—				—				171,528
Preferred Stocks
Equipment Leasing			—				—				23,173
Total Preferred Stocks			—				—				23,173
Convertible Notes
Medical Devices			—				—				3,224
Total Convertible Notes			—				—				3,224
Mutual Funds			59,009				—				—
Total		$	59,009			$	—			$	197,925

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

INVESTMENTS AT FAIR VALUE USING SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3)		BALANCE AS OF 12/31/24				NET PURCHASES/ CONVERSIONS				NET SALES/ CONVERSIONS				NET REALIZED GAINS/ (LOSSES)				NET UNREALIZED APPRECIATION (DEPRECIATION)⁽¹⁾				TRANSFERS IN (OUT) OF LEVEL 3				BALANCE AS OF 09/30/25
Common Stocks
Advanced Materials		$	260,497			$	—			$	—			$	—			$	(88,969	)		$	—			$	171,528
Total Common Stocks			260,497				—				—				—				(88,969	)			—				171,528
Preferred Stocks
Equipment Leasing			29,466				—				—				—				(6,293	)			—				23,173
Total Preferred Stocks			29,466				—				—				—				(6,293	)			—				23,173
Convertible and Non-Convertible Notes
Automotive			—				—				—				(24,129,015	)			24,129,015				—				—
Medical Devices			25,287				—				—				—				(22,063	)			—				3,224
Total Convertible and Non-Convertible Notes			25,287				—				—				(24,129,015	)			24,106,952				—				3,224
Total		$	315,250			$	—			$	—			$	(24,129,015	)		$	24,011,690			$	—			$	197,925

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

		FAIR VALUE AT 9/30/2025			VALUATION TECHNIQUES(1)	UNOBSERVABLE INPUTS		RANGE (WEIGHTED AVG.)(1)
Direct venture capital investments: Advanced Materials		$	0.2M		Market Comparable Companies	Revenue Multiple⁽²⁾		0.8x – 1.0x (0.9x)
					Option Pricing Model	Years to Maturity⁽²⁾		5 years (5 years)
						Volatility⁽²⁾			50.0	%	(50.0%	)
						Risk-Free Rate⁽²⁾			3.74	%	(3.74%	)
						Discount for Lack of			22.8	%	(22.8%	)
						Marketability⁽³⁾
Direct venture capital investments: Automotive		$	0.0M		Liquidation Value	Market Value of Invested Capital		$0 ($0)
Direct venture capital investments: Equipment Leasing		$	0.0M		Cash Value	Years to Maturity⁽²⁾		2 years (2 years)
					Option Pricing Model	Volatility⁽²⁾			50.0	%	(50.0%	)
						Risk-Free Rate⁽²⁾			3.60	%	(3.60%	)
Direct venture capital investments: Medical Devices		$	0.0M		Market Comparable Companies	Revenue Multiple⁽²⁾		0.5x – 0.6x (0.6x)
					Market Comparable Transactions	Years to Maturity⁽²⁾		3 years (3 years)
					Option Pricing Mode1	Volatility⁽²⁾			55.0	%	(55.0%	)
						Risk-Free Rate⁽²⁾			3.61	%	(3.61%	)
						Going Concern Probability⁽²⁾			5	%	(5%	)
Direct venture capital investments: Semiconductor Equipment		$	0.0M		Recent Transaction	Equity Proceeds from Private Transaction			0	%	(0%	)

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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