From ACT Wiki
A very large issue of securities.
Definitions of minimum sizes vary, for example USD1bn, EUR1bn or USD5bn.
High-quality nominations for Deal of the Year 2017
- "The challenge this year was to assess more than 170 high-quality nominations ranging from classic jumbo investment-grade issuance to unrated emerging market deals and everything in between."
- The Treasurer magazine, February 2018, p17 - Deals of the Year.