A second-tier Participant, ranked by size of participation. Bloomberg Financial Dictionary
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co-manager ˌco-ˈmanager noun [countable usually singular]
1. JOBS someone who shares the job of manager with someone else:
• Mr Marshall was co-manager of Goldman Sachs's financial strategies group.
2. BANKING a bank that is next in rank after a lead manager in the marketing of certain financial products:
• the co-managers of the underwriting syndicate
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co-manager UK US noun [C]
► a person, company, etc. that organizes an activity together with one or more other people or companies: »
Merrill Lynch and Kokusai Securities were the co-managers of the bond sale.
Financial and business terms. 2012.