MARKETABLE SECURITIES (Tables)

9 Months Ended

Sep. 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 September 30, 2025								As of December 31, 2024
Eversource (Millions of Dollars)	Amortized Cost		Pre-Tax Unrealized Gains		Pre-Tax Unrealized Losses		Fair Value		Amortized Cost		Pre-Tax Unrealized Gains		Pre-Tax Unrealized Losses		Fair Value
Debt Securities	$	159.9	$	0.5	$	(3.7)	$	156.7	$	163.2	$	0.1	$	(6.1)	$	157.2

Contractual Maturities of Available-for-Sale Debt Securities

As of September 30, 2025, the contractual maturities of available-for-sale debt securities were as follows:

 

Eversource (Millions of Dollars)	Amortized Cost		Fair Value
Less than one year	$	13.6	$	13.6
One to five years	37.5		38.2
Six to ten years	27.1		27.2
Greater than ten years	81.7		77.7
Total Debt Securities	$	159.9	$	156.7

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 September 30, 2025		As of December 31, 2024
Level 1:
Mutual Funds and Equities	$	164.3	$	163.1
Money Market Funds	10.3		10.0
Total Level 1	$	174.6	$	173.1
Level 2:
U.S. Government Issued Debt Securities (Agency and Treasury)	$	86.4	$	92.0
Corporate Debt Securities	38.0		32.5
Asset-Backed Debt Securities	6.9		7.8
Municipal Bonds	6.5		6.8
Other Fixed Income Securities	8.6		8.1
Total Level 2	$	146.4	$	147.2
Total Marketable Securities	$	321.0	$	320.3