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Largest 401(k) Plan Administrators

November 26, 2006 Reprints

Ranked by number of plan participants receiving services on an unbundled basis¹

Rank

Company

Unbundled participants²

Hewitt Associates L.L.C.

4,400,000

Affiliated Computer Services Inc.

2,033,517

BISYS Retirement Services Inc.

1,700,000

The 401(k) Co.

423,370

Paychex Inc.

400,000

Alliance Benefit Group

203,866

Transamerica Retirement Services³

184,000

Milliman Inc.

146,916

Schloss & Co. Inc. -A BenefitStreet Co.

118,000

CitiStreet L.L.C.

112,489

¹Companies must offer 401(k) plan administration services, such as recordkeeping and handling of account activity, on an unbundled basis.

² As of 6/30/06.

⁵ All numbers are as of 12/31/05.

Source: BI survey

Researched by Kevin Edison and Karen Tucker

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Largest 401(k) Plan Administrators