Marketable Securities (Tables)

6 Months Ended

Jan. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of financial assets measured at fair value on recurring basis

Fair value measurements at reporting date

	Total								Total
	January 31,								July 31,
Description	2022		Level 1		Level 2		Level 3		2021		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	3,439,727	$	3,439,727	$	–	$	–	$	3,901,093	$	3,901,093	$	–	$	–

Schedule of classified marketable securities

As of January 31, 2022 and July 31, 2021, the Company's marketable securities were classified as follows:

	January 31, 2022								July 31, 2021
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
Mutual funds	$	962,518	$	464,715	$	–	$	1,427,233	$	984,869	$	619,972	$	–	$	1,604,841
Equity securities		1,153,683		858,811		–		2,012,494		1,355,961		940,291		–		2,296,252
	$	2,116,201	$	1,323,526	$	–	$	3,439,727	$	2,340,830	$	1,560,263	$	–	$	3,901,093

Schedule of investment income

Investment income consists of the following:

	Three Months Ended				Six Months Ended
	January 31				January 31
	2022		2021		2022		2021
Interest income	$	1	$	67	$	1	$	294
Dividend income		150,321		76,868		157,088		82,691
Gain on sale of marketable securities		48,213		–		48,213		83,176
Total	$	198,535	$	76,935	$	205,302	$	166,161