Underwriting
How Securities Underwriting Works
When a company wants to raise capital through an IPO, follow-on offering, or bond issuance, it hires one or more investment banks as underwriters. The underwriter’s job is to structure the deal, price the securities, build investor demand through the book-building process, and distribute the shares or bonds to buyers.
The underwriter earns a fee — called the “gross spread” or “underwriting discount” — which is the difference between the price paid to the issuing company and the price at which the securities are sold to investors. For IPOs, this spread is typically around 7 % of total proceeds; for bond offerings, it’s usually 0.5–1.5 %.
Types of Underwriting Commitments
| Type | How It Works | Risk to Underwriter |
|---|---|---|
| Firm Commitment | The underwriter buys the entire issue from the company and resells it to investors. If shares don’t sell, the underwriter absorbs the loss. | High — the underwriter owns the unsold securities |
| Best Efforts | The underwriter agrees to sell as many securities as possible but doesn’t guarantee the entire issue. Unsold securities are returned to the issuer. | Low — the underwriter has no obligation to buy unsold shares |
| All-or-None | The offering is cancelled entirely if the underwriter can’t sell all the securities. No partial sales. | None if cancelled; full commitment if the offering proceeds |
| Standby (for Rights Issues) | The underwriter agrees to purchase any shares not subscribed by existing shareholders in a rights issue. | Variable — depends on shareholder take-up rate |
The Underwriting Process (Securities)
1. Mandate and due diligence. The issuer selects a lead underwriter (or bookrunner) and supporting syndicate members. The underwriting team conducts due diligence on the company’s financials, business model, and risks.
2. Registration and documentation. The underwriter helps prepare the prospectus and registration statement filed with the SEC.
3. Roadshow and book-building. Management presents to institutional investors while the underwriter gauges demand, collects orders, and builds the order book. This book-building process determines the final offer price.
4. Pricing. Based on demand, the underwriter sets the final price — balancing the issuer’s desire for a high price against the need to ensure strong aftermarket trading.
5. Allocation and distribution. Securities are allocated to investors and begin trading. The underwriter may exercise a greenshoe option to stabilize the price if needed.
Underwriting in Insurance
Insurance underwriting evaluates the risk of insuring a person, property, or event. The underwriter reviews applications, assesses the probability and cost of a claim, and sets premiums accordingly. High-risk applicants pay more or may be denied coverage. The goal is to price risk accurately so the insurer can pay claims and still earn a profit.
Underwriting in Lending
Loan underwriting assesses a borrower’s creditworthiness before approving a mortgage, business loan, or other credit product. The underwriter evaluates income, credit score, debt-to-income ratio, collateral value, and employment stability to determine whether to approve the loan and at what terms.
The Underwriting Syndicate
Large securities offerings are typically handled by a syndicate — a group of investment banks that share the risk and distribution. The hierarchy includes the lead underwriter (or bookrunner), co-managers, and selling group members. The bookrunner takes the largest share of fees and risk, controls pricing and allocation, and coordinates the entire process.
Key Takeaways
- Underwriting means evaluating, pricing, and assuming financial risk — most commonly in securities issuance, insurance, and lending.
- In securities markets, underwriters buy new shares/bonds from the issuer and resell them to investors, earning a fee (the gross spread).
- Firm commitment underwriting puts the underwriter at risk; best efforts does not guarantee the full issue.
- The underwriting process includes due diligence, SEC filing, roadshow, book-building, pricing, and distribution.
- Syndicates of multiple banks share risk and distribution on large offerings.
Frequently Asked Questions
What is underwriting in simple terms?
Underwriting is when a financial institution evaluates a risk and decides to take it on for a fee. In capital markets, this means buying new securities from a company and selling them to investors. In insurance, it means assessing someone’s risk profile and setting a price for coverage.
What does an underwriter do in an IPO?
The underwriter (usually an investment bank) helps the company prepare its filing, markets the offering to investors through a roadshow, sets the offer price based on demand, buys the shares from the company, and distributes them to investors on the first day of trading.
How do underwriters make money?
Through the gross spread — the difference between the price they pay the issuer and the price they sell to investors. For IPOs, this is typically about 7 % of total proceeds. They may also earn additional fees for advisory and stabilization activities.
What is the difference between firm commitment and best efforts underwriting?
In a firm commitment, the underwriter buys the entire issue and takes on the risk of unsold securities. In best efforts, the underwriter tries to sell as much as possible but doesn’t guarantee the full amount — unsold shares go back to the issuer.
Why would a company use multiple underwriters?
A syndicate spreads the risk across multiple banks and expands the distribution network, reaching more institutional and retail investors. It also brings in multiple research analysts who may cover the stock after the offering, supporting trading liquidity.