Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2026

Fair Value Disclosures [Abstract]

Schedule of Fair Value Of Certain Financial Assets And Liabilities

The fair value of certain financial assets and liabilities of the Company was determined using the following inputs:


						At September 30, 2026
						Level 1						Level 2						Level 3						NAV as a Practical Expedient						Total
Financial Assets
SEI Investments Company
Equity securities						$	70,144					$	—					$	—					$	—					$	70,144
Available-for-sale debt securities						—						155,995						—						—						155,995
Securities owned						—						25,750						—						—						25,750
Investment funds sponsored by LSV						—						—						—						14,176						14,176
Investments in limited partnership funds						—						—						—						1,307						1,307
Total financial assets of SEI Investments Company						70,144						181,745						—						15,483						267,372
Consolidated VIEs
Equity securities						135,268						—						—						—						135,268
Total financial assets of consolidated VIEs						135,268						—						—						—						135,268
Total financial assets measured at fair value						$	205,412					$	181,745					$	—					$	15,483					$	402,640

Financial Liabilities
SEI Investments Company
Contingent considerations						$	—					$	—					$	7,834					$	—					$	7,834
Total financial liabilities of SEI Investments Company						—						—						7,834						—						7,834
Consolidated VIEs
Securities sold short						131,408						—						—						—						131,408
Total financial liabilities of consolidated VIEs						131,408						—						—						—						131,408
Total financial liabilities measured at fair value						$	131,408					$	—					$	7,834					$	—					$	139,242


						At December 31, 2025
						Level 1						Level 2						Level 3						NAV as a Practical Expedient						Total
Financial Assets
SEI Investments Company
Equity securities						$	67,414					$	—					$	—					$	—					$	67,414
Available-for-sale debt securities						—						158,690						—						—						158,690
Securities owned						—						33,777						—						—						33,777
Investment funds sponsored by LSV						—						—						—						11,593						11,593
Investments in limited partnership funds						—						—						—						1,158						1,158
Total financial assets of SEI Investments Company						67,414						192,467						—						12,751						272,632
Consolidated VIEs
Equity securities						113,119						—						—						—						113,119
Total financial assets of consolidated VIEs						113,119						—						—						—						113,119
Total financial assets measured at fair value						$	180,533					$	192,467					$	—					$	12,751					$	385,751

Financial Liabilities
SEI Investments Company
Contingent considerations						$	—					$	—					$	7,834					$	—					$	7,834
Total financial liabilities of SEI Investments Company						—						—						7,834						—						7,834
Consolidated VIEs
Securities sold short						108,243						—						—						—						108,243
Total financial liabilities of consolidated VIEs						108,243						—						—						—						108,243
Total financial liabilities measured at fair value						$	108,243					$	—					$	7,834					$	—					$	116,077