SEI Investments (SEIC) 8-K Entry into a Material Definitive Agreement

Exhibit 99.1

SEI Investments Company

Impact of Support Provided to Sponsored Money Market Funds

Quarter to date and Cumulative to date November 28, 2008

(in thousands)

							Quarter to date Fourth Quarter 2008 As of November 28, 2008				Cumulative to date As of November 28, 2008
Description	Par Value of Securities		Support Amount		Required Collateral		Gross Charge		After-Tax Charge		Gross Charge		After-Tax Charge
Securities currently held by funds:
Capital Support Agreement (1)	$	271,438	$	271,438	$	149,547	$	42,344	$	26,855	$	136,003	$	85,954
Capital Support Agreement (2)		72,026		30,000		30,000		8,069		5,118		26,834		16,959
Total of securities currently held by funds	$	343,464	$	301,438	$	179,547	$	50,413	$	31,973	$	162,837	$	102,913

1 - Pertains to SEI Daily Income Trust Prime Obligation Fund

2 - Pertains to SEI Liquid Asset Trust Prime Obligation Fund