v3.26.1
Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2025
RETIREMENT SAVINGS PLAN  
Fair Value Measurements  
Schedule of Plan's Assets Fair Value Hierarchy

  ​ ​ ​

2025

2024

Quoted Prices in Active Markets (Level 1):

 

  ​

 

  ​

Mutual funds

$

12,992,721

$

282,199,040

WMI common stock

 

339,276,595

 

341,492,867

Self-directed brokerage accounts

 

142,400,938

 

127,065,199

Common collective trust funds

134,637,703

324,325,665

Subtotal Level 1

 

629,307,957

 

1,075,082,771

 

  ​

 

  ​

Significant Other Observable Inputs (Level 2):

 

  ​

 

  ​

Self-directed brokerage accounts — FedFund

 

8,875,125

 

9,490,019

FedFund

 

 

2,193,944

Subtotal Level 2

 

8,875,125

 

11,683,963

Investments Measured at Net Asset Value (a):

 

  ​

 

  ​

Common collective trust funds

 

2,062,265,259

 

2,894,412,157

Subtotal Investments Measured at Net Asset Value

 

2,062,265,259

 

2,894,412,157

Total Investments at Fair Value

$

2,700,448,341

$

3,981,178,891

(a)Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Statements of Net Assets Available for Benefits. As of December 31, 2025 and 2024, there were no redemption restrictions on the investments held at net asset value other than possible advance notice requirements.