Back to Glossary

Entry · Corporate Finance

Underwriting Group

An underwriting group is the set of banks that commit to buy a new issue of securities from the issuer and resell it to investors. It is the core risk-taking part of the offering team, sitting alongside a looser selling group of dealers who only help distribute the securities.

The lead manager organises the group and decides how the commitment is divided.

From the Money Master HQ dictionary, founded by Shihan Sheriff (FCMA, VP of Finance at Nomod, CFO at Esanjo Ventures). How these definitions are written.

What it means

When a company or government issues a large amount of stock or bonds, it needs firms that are prepared to put their own capital behind the deal. Those firms form the underwriting group.

Each member signs up for a stated percentage of the issue and takes responsibility for it. The lead manager, usually the bank with the closest relationship to the issuer, forms the group, negotiates the terms and runs the order book.

Co-managers take sizeable shares, while smaller members take modest ones. The more members there are, the lighter each bank's burden and the wider the investor reach, although a very large group can be slow to coordinate.

How liability works depends on the type of account. In a divided account each member is responsible only for its own share of any unsold securities, whereas in an undivided account members are collectively responsible for the unsold remainder in proportion to their participation.

The choice affects how much risk each bank actually carries if the market turns. Group members earn the underwriting fee and, if they sell securities themselves, a selling concession.

The lead earns a management fee as well. The agreement among underwriters sets all of this out, and it also covers price stabilisation and the duration of the group.

For issuers the group is a source of certainty: if the deal is firm commitment, the banks buy the securities whether or not investors do. For regulators, it is also a way to ensure that the risk of a big capital raise is spread across several well-capitalised firms.

Pricing and timing are managed by the group together. During the offer period the lead may buy securities in the market to stop the price falling below the offer price, an action known as stabilisation.

Members are bound by the agreement not to sell below the offer price until the lead releases the group.

In practice

Real-world examples.

1

Example

An infrastructure company issues $600,000,000 of bonds, and an underwriting group of six banks is formed. The lead bank takes 35% of the commitment, which is $210,000,000, and the remaining banks share the rest.

2

Example

A technology firm lists on a stock exchange. The underwriting group sells all but 3% of the shares on day one, and the members divide the unsold shares according to their commitments.

3

Example

A national government sells treasury notes through a group of primary dealers who are committed to bid for the issue. The dealers then pass the notes on to pension funds, insurers and overseas investors.

Formula

Calculation

Member commitment = Total issue size x Member's percentage share A $200,000,000 bond issue is underwritten by seven banks. The lead takes 40%, two co-managers take 20% each, and four other members take 5% each. Lead commitment = $200,000,000 x 40% = $80,000,000 Each co-manager = $200,000,000 x 20% = $40,000,000 Each other member = $200,000,000 x 5% = $10,000,000 Check: 40% + 20% + 20% + (4 x 5%) = 100%, and in dollars $80,000,000 + $40,000,000 + $40,000,000 + (4 x $10,000,000) = $200,000,000. The account type changes who pays if part of the issue is unsold. Suppose $10,000,000 is left over, which is 5% of the issue. In a divided account the member responsible for that unsold part carries it alone, whereas in an undivided account the lead bears 40% x $10,000,000 = $4,000,000, each co-manager bears 20% x $10,000,000 = $2,000,000 and each smaller member bears 5% x $10,000,000 = $500,000, which adds up to the full $10,000,000.

Case study

Seen in the real world.

Ashgrove Holdings is an illustrative, fictional food company that raised $120,000,000 of new equity through an underwriting group of four fictional banks. The lead bank took 50% and the other three took roughly 17% each.

Demand was strong in Europe but weak in Asia, and one of the smaller banks, which had expected to sell mainly in Asia, found itself with unsold shares. Because the group was set up as a divided account, that bank had to hold its own unsold amount and could not push it onto the others.

The illustrative outcome shows why the account type matters: the same market disappointment lands on a single member under a divided account but is shared across the group under an undivided one. The lead bank later changed its approach to future deals, allocating more selling responsibility to firms with strong Asian networks.

Watch out

Common mistakes.

  • Using underwriting group and selling group as if they were the same thing, when only the underwriting group takes risk.
  • Assuming the lead manager always carries the largest unsold risk, when liability depends on the type of account and each member's share.
  • Believing the fee is only the selling concession, when the lead earns a management fee and members earn an underwriting fee.

Questions

People also ask.

What is the difference between an underwriting group and a syndicate?

In practice the terms are used almost interchangeably for the group of banks that commits to buy an issue, though syndicate is the more common word in loan and bond markets.

Who decides each member's share?

The lead manager, in agreement with the issuer, sets the allocation, which is written into the agreement among underwriters.

What is a divided versus undivided account?

In a divided account each bank answers only for its own unsold securities, while in an undivided account unsold securities are shared in proportion to commitments.

Was this explanation helpful?

From the founder's library

Accounting Fundamentals: A Non-Finance Manager's Guide to Finance and Accounting, by Shihan Sheriff

Take it further with the book.

Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.

US$2.24US$2.99

25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.

View the book and save 25%

Related

Keep reading.

Underwriter SyndicateSelling GroupLead ManagerDivided AccountUndivided AccountUnderwriting AgreementGross SpreadPrimary Dealer
Last updated · October 8, 2026
Browse all terms →

Disclaimer

The information provided in this finance dictionary is for educational and informational purposes only. It should not be construed as financial, investment, legal, or tax advice. Always consult with a qualified professional before making any financial decisions. Money Master HQ makes no representations or warranties about the accuracy, completeness, or suitability of this information. Use of this content is at your own risk.