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Investments
 12 Months Ended
Apr. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Investments Investments
Investments consist of the following (in thousands): 
 April 30,
 20242023
Trading:
U.S. Treasury securities$24,261 $7,305 
Marketable equity securities— 16,632 
$24,261 $23,937 
The total carrying value of all investments on a consolidated basis was approximately $24.3 million and $23.9 million at April 30, 2024 and 2023, respectively.
The U.S. Treasury securities at April 30, 2024 and 2023 were as follows (in thousands): 
20242023
Due within one year$24,261 $6,819 
Due within two years— 486 
$24,261 $7,305 

In fiscal 2024, 2023 and 2022, the Company’s investment portfolio experienced net realized and unrealized gains of $2.3 million, net unrealized gains of $0.1 million and net unrealized and realized gains of $0.4 million, respectively. The increase in net realized gains in fiscal 2024 compared to the same period in the prior year is due to consolidating our investment portfolio to U.S. treasury securities.