v3.25.2
MARKETABLE SECURITIES (Tables)
 6 Months Ended
Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Summary of Available-for-Sale Debt Securities The following is a summary of available-for-sale debt securities, which are held in CYAPC’s and YAEC’s spent nuclear fuel trusts:
As of June 30, 2025As of December 31, 2024
Eversource
(Millions of Dollars)
Amortized CostPre-Tax
Unrealized Gains		Pre-Tax
Unrealized
Losses		Fair ValueAmortized CostPre-Tax
Unrealized Gains		Pre-Tax
Unrealized
Losses		Fair Value
Debt Securities$162.4 $0.1 $(5.7)$156.8 $163.2 $0.1 $(6.1)$157.2 
Contractual Maturities of Available-for-Sale Debt Securities
As of June 30, 2025, the contractual maturities of available-for-sale debt securities were as follows:
 
Eversource
(Millions of Dollars)
Amortized CostFair Value
Less than one year
$15.1 $15.1 
One to five years33.3 33.6 
Six to ten years30.4 30.1 
Greater than ten years83.6 78.0 
Total Debt Securities$162.4 $156.8 
Marketable Securities Recorded at Fair Value on a Recurring Basis by Level The following table presents the marketable securities recorded at fair value on a recurring basis by the level in which they are classified within the fair value hierarchy:
Eversource
(Millions of Dollars)
As of June 30, 2025As of December 31, 2024
Level 1:    
Mutual Funds and Equities$159.8 $163.1 
Money Market Funds11.7 10.0 
Total Level 1$171.5 $173.1 
Level 2:  
U.S. Government Issued Debt Securities (Agency and Treasury)$83.0 $92.0 
Corporate Debt Securities39.4 32.5 
Asset-Backed Debt Securities8.0 7.8 
Municipal Bonds6.3 6.8 
Other Fixed Income Securities8.4 8.1 
Total Level 2$145.1 $147.2 
Total Marketable Securities$316.6 $320.3