Note 9 - Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Gain (Loss) on Securities [Table Text Block]

	Three months ended					Nine months ended
	September 30,					September 30,
	2024		2023			2024		2023
Net gains (losses) recognized during the period on marketable securities	$	47,223	$	(14,357	)	$	79,218	$	65,823
Less: Net losses recognized during the period on marketable securities sold during the period		-		-			-		(433,769	)
Unrealized gains (losses) recognized during the reporting period on marketable securities still held at the reporting date	$	47,223	$	(14,357	)	$	79,218	$	499,592

Marketable Securities [Table Text Block]

					Unrealized
	Cost		Fair Value		Gain
Equity Securities:
Equity and other mutual funds	$	587,394	$	668,600	$	81,206
Other short-term investments:
Fixed income Certificates of Deposit (original maturities > 3 months)		948,642		948,642		-
U.S. Treasury Bills (original maturities > 3 months)		5,437,227		5,437,227		-
Total marketable securities	$	6,973,263	$	7,054,469	$	81,206

					Unrealized
					Gain
Equity Securities:
Equity and other mutual funds	$	574,330	$	576,318	$	1,988
Other short-term investments:
Fixed income Certificates of Deposit (original maturities > 3 months)		275,000		275,000		-
Total marketable securities	$	849,330	$	851,318	$	1,988