Secondary Listing: Why Some Companies Trade on SGX and Another Exchange at the Same Time
Last updated: October 2026
A secondary listing is when a company whose shares are already listed on one stock exchange (its primary listing) also lists the same class of shares on a second exchange such as SGX, giving investors in both markets local access to trade the stock while the company’s main regulatory home usually stays with the primary exchange. It widens where a stock can be bought and sold without duplicating the company’s full regulatory obligations.
Not financial advice. All figures for educational reference only. Data as at October 2026.
Key Takeaways
- Shares under a secondary listing are typically fungible with the primary-market shares, subject to the relevant settlement and transfer system.
- The company’s primary disclosure and regulatory obligations generally stay anchored to its home exchange, with the secondary market sometimes granting rule waivers where the home regime is considered equivalent.
- SGX has actively pursued secondary listings, particularly from companies with a primary listing in markets like Australia, Hong Kong or mainland China.
- Secondary-listed counters often trade with thinner liquidity on SGX than on the primary exchange, which can mean wider bid-ask spreads.
- This is distinct from a dual primary listing, where the company carries full listing obligations in both markets simultaneously.
What Is Secondary Listing?
Companies sometimes want to be accessible to a second pool of investors without undergoing a full, separate IPO process in that market. A secondary listing achieves this: the company lists the same class of shares already trading on its primary (home) exchange onto a second exchange, typically through a listing sponsor and often relying substantially on its home market’s existing disclosure regime. SGX has used this route to broaden its listed universe, including names with a primary listing in markets such as Australia (several ASX-listed REITs and companies have pursued SGX secondary listings) or other regional exchanges.
How Does Secondary Listing Work in Singapore?
Under SGX’s listing framework, a secondary listing applicant typically needs a sponsor and must satisfy SGX that its home exchange’s regulatory and disclosure regime provides broadly equivalent protection to investors, which can allow SGX to waive certain local continuing obligations that would otherwise duplicate what the company already does for its primary market. The shares traded on SGX are generally fungible with those on the primary exchange over time, meaning investors can, subject to the relevant transfer and settlement arrangements, move shares between the two markets, which supports arbitrage and keeps pricing broadly aligned. Corporate actions such as dividends, rights issues and bonus issues usually originate from the primary market’s processes and flow through to the secondary listing, sometimes with a short administrative lag.
Secondary Listing Example
Suppose a company primary-listed on the Australian Securities Exchange (ASX) pursues a secondary listing on SGX to access Singapore and broader Southeast Asian investors directly in Singapore dollars. Singapore-based investors can buy the SGX-quoted counter through their local brokerage without needing an overseas trading account, while the company continues to meet its principal disclosure obligations under ASX rules, with SGX relying on equivalence for many of its own continuing obligations.
Advantages of Secondary Listing
- Direct local-currency access for Singapore investors. Investors can buy and sell the stock through a local brokerage account in Singapore dollars, without needing a separate foreign trading account.
- Broadens SGX’s listed company universe. Secondary listings let SGX offer exposure to companies and sectors that might not otherwise have a Singapore-listed equivalent.
- Can improve a company’s overall trading profile. Access to an additional pool of investors can, over time, support the company’s overall liquidity and market visibility.
- Lower duplication of regulatory cost for the company. Relying on home-market equivalence reduces the compliance burden compared to a full, independent primary listing in the second market.
Risks and Limitations
- SGX-side liquidity is often thin. Trading volume on the secondary listing can be a small fraction of the primary market’s volume, leading to wider bid-ask spreads and more difficulty executing larger trades.
- Disclosure timing may follow the home market’s calendar. Material announcements might first be released under the primary exchange’s rules and timing, with the secondary market receiving the information on a slightly different schedule.
- Corporate actions can be administratively slower to reach the secondary market. Dividends, rights issues and other corporate actions that originate in the primary market sometimes take longer to process for secondary-listing shareholders.
- Not the same protection level as a dual primary listing. Investors should understand that regulatory equivalence waivers mean some obligations are deferred to the home market’s standards, which may differ in substance or timing from full SGX primary listing requirements.
Secondary Listing vs Dual Primary Listing
| Aspect | Secondary Listing | Dual Primary Listing |
|---|---|---|
| Regulatory home | Primarily the original home exchange, with equivalence-based waivers on the second exchange | Full listing obligations owed to both exchanges simultaneously |
| Disclosure duplication | Reduced, relying on home-market equivalence | Full compliance required in both markets independently |
| Typical liquidity on the newer exchange | Often thinner than the primary market | Can develop more independently, depending on investor base |
| Typical motivation | Broaden investor access without a full second listing process | Deeper market access justifying full dual compliance commitment |
Source: SGX Listing Manual secondary listing framework; general cross-border listing practice.
The Bottom Line
For Singapore investors, a secondary listing is a convenient local entry point into a stock whose real regulatory and governance home lies elsewhere — useful for access, but worth checking actual SGX-side trading liquidity before assuming it behaves just like a conventional primary-listed counter.
Frequently Asked Questions
What is a secondary listing on SGX?
It is when a company already listed on another exchange also lists the same class of shares on SGX, giving Singapore-based investors local access to trade the stock, usually while the company’s main regulatory obligations remain with its home exchange.
Are shares under a secondary listing the same as the primary-market shares?
Generally yes — they are typically fungible, subject to the applicable settlement and transfer arrangements between the two markets.
Why is SGX-side liquidity often lower for secondary-listed counters?
Trading activity tends to concentrate where the stock was originally listed and where its core investor base is based, leaving the secondary market with a smaller share of overall trading volume.
What is the difference between a secondary listing and a dual primary listing?
A secondary listing generally relies on the home exchange’s regulatory regime with equivalence-based waivers on the second exchange, while a dual primary listing requires the company to meet full listing obligations independently in both markets.
Do corporate actions apply the same way to secondary-listing shareholders?
Broadly yes, though the timing can lag slightly since dividends, rights issues and other corporate actions usually originate from the primary market’s processes before flowing through to the secondary listing.
Why does SGX pursue secondary listings from foreign companies?
It broadens the range of companies and sectors available to Singapore-based investors and can enhance SGX’s overall market depth and profile.
