Underwriting Syndicate: How a Group of Banks Guarantees an SGX IPO Gets Sold

The consortium of investment banks that shares the risk of selling a new listing to the public

An underwriting syndicate is a group of investment banks and brokers that jointly commits to buying and reselling the shares of a company going public on SGX, sharing the financial risk if the public does not buy all the shares at the offer price.

Not financial advice. All figures for educational reference only. Data as at October 2026.

Last updated: October 2026

Key Takeaways

• An underwriting syndicate spreads the risk of an IPO across multiple banks instead of leaving one bank to absorb any unsold shares.
• One bank in the syndicate is usually appointed lead manager or bookrunner, running the book-building process and coordinating the other members.
• On SGX, syndicate members typically include local banks (DBS, OCBC, UOB) alongside foreign investment banks, depending on the deal size.
• Syndicate members earn an underwriting fee (commonly 2 percent to 5 percent of the deal size in Singapore) for taking on this risk.
• A syndicate’s size and reputation is one signal retail investors use to gauge institutional confidence in an upcoming listing, though it is not a guarantee of post-listing performance.

What Is an Underwriting Syndicate?

When a company lists on the Singapore Exchange, it rarely sells shares to the public by itself. Instead, it hires one or more investment banks to manage the process end to end — pricing the offer, marketing it to institutional and retail investors, and standing behind the sale. When more than one bank is involved, the appointed banks come together as an underwriting syndicate.

The syndicate exists because a single bank underwriting a large IPO alone would be taking on significant risk. If the IPO proceeds to the offer date and investor demand is weaker than expected, the underwriter may be contractually obliged to buy the unsold shares itself at the agreed offer price. By spreading that commitment across several banks, each one’s individual exposure shrinks, and the deal can be sized larger than any single bank would comfortably underwrite on its own.

The practice has existed in some form since the earliest public share offerings, and it remains the standard structure for mid-sized and large IPOs globally, including on SGX. Smaller Catalist-board listings in Singapore sometimes use a single sponsor-underwriter rather than a full syndicate, reflecting the smaller deal size and lower capital at risk.

How Does an Underwriting Syndicate Work in Singapore?

In a typical SGX Mainboard IPO, the issuing company appoints one or more banks as joint lead managers or bookrunners. These banks then invite other institutions to join the syndicate as co-managers or co-underwriters, each taking a contractually defined slice of the shares to sell and, if necessary, absorb.

Singapore’s three local banks — DBS, OCBC (through OCBC Bank or OCBC Securities), and UOB (through UOB Kay Hian) — frequently anchor syndicates for domestic listings, often alongside global banks such as Morgan Stanley, Goldman Sachs, or Citigroup for larger, internationally marketed deals. The Monetary Authority of Singapore (MAS) does not directly regulate syndicate composition, but all members must be licensed capital markets services holders under the Securities and Futures Act to participate in a public offer.

Source: Typical SGX IPO prospectus syndicate structure.

Underwriting Syndicate Example

Suppose a mid-sized Singapore logistics company plans to raise SGD 150 million through an IPO on the SGX Mainboard. One bank acting alone might be unwilling to underwrite the full amount, given the capital it would need to set aside for the shares it might be forced to buy. Instead, three banks form a syndicate: Bank A as bookrunner underwrites SGD 70 million, Bank B underwrites SGD 50 million, and Bank C underwrites SGD 30 million.

If institutional and retail demand covers the full SGD 150 million at the offer price, no bank needs to buy unsold shares, and each earns its underwriting fee on its allocated portion. If demand falls short by SGD 20 million, each bank is contractually obliged to buy its proportional share of that shortfall, limiting any single bank’s loss relative to underwriting the whole deal alone.

Advantages of an Underwriting Syndicate

• Risk-sharing lowers the barrier to larger deals. No single bank has to carry the full exposure of a large IPO, which allows bigger companies to list without one institution refusing the mandate over capital concerns.
• Wider distribution network. Each syndicate member taps its own client base — institutional funds, private banking clients, retail brokerage customers — which can improve the breadth and depth of demand for the shares.
• Credibility signal. A syndicate that includes well-regarded banks can lend reputational weight to a listing, since each member has done its own due diligence before agreeing to underwrite.
• Price discovery. More banks running book-building conversations with more investors can produce a more accurate sense of fair value before the final offer price is fixed.

Risks and Limitations

• A syndicate does not guarantee post-listing performance. Underwriting addresses whether the shares get sold at IPO, not whether the share price holds up afterwards.
• Conflicts of interest can arise. Banks in the syndicate may also provide research coverage on the stock after listing, raising questions about independence.
• Underwriting fees reduce net proceeds to the issuer. A 3 percent to 5 percent underwriting fee on a large IPO is a material cost that is ultimately borne by the company and, indirectly, its shareholders.
• Stabilisation activity (if a greenshoe is used) can mask genuine demand. Syndicate-led price support in the days after listing may create a temporarily firmer share price than organic demand alone would produce.

Underwriting Syndicate vs Sole Underwriter

The Bottom Line

For a Singapore investor evaluating an upcoming IPO, the underwriting syndicate is worth a glance in the prospectus because it signals how much institutional risk-sharing stands behind the offer. It is not, however, a judgement on the company’s long-term prospects — that still requires reading the financials and the risk factors section independently.

Frequently Asked Questions

Related Terms

• Book Building Singapore
• Greenshoe Option Singapore
• Cornerstone Investor (IPO) Singapore
• IPO Lock-Up Period Singapore