Market Maker (ETF): The Quiet Middleman Keeping Your ETF’s Price Fair
An ETF market maker is a specialised trading firm that continuously quotes both buy (bid) and sell (offer) prices for an exchange-traded fund throughout the trading day, providing the liquidity that lets ordinary investors buy or sell ETF units on an exchange like SGX at a price close to the fund’s true underlying value, even without a matching buyer or seller present at that exact moment.
Not financial advice. All figures for educational reference only. Data as at August 2026. Last updated: August 2026.
Key Takeaways
- Market makers are distinct from Authorised Participants (APs) — while APs handle the creation and redemption of large blocks of ETF units directly with the fund manager, market makers focus on providing continuous two-way pricing on the exchange for everyday investors.
- In practice, a firm can act as both a market maker and an Authorised Participant, using its creation/redemption ability to manage the inventory risk it takes on from market-making activity.
- Market makers earn their profit primarily from the bid-ask spread — the small gap between the price they’ll buy at and the price they’ll sell at — rather than from directional bets on the ETF’s price.
- SGX requires many listed ETFs to have at least one designated market maker to ensure a minimum level of liquidity and orderly trading, particularly important for ETFs with lower daily trading volumes.
- A market maker’s continuous quoting is what keeps an ETF’s traded price closely aligned with its Net Asset Value (NAV) — without this activity, ETF prices could drift further from fair value, especially for thinly-traded funds.
What Is Market Maker?
ETFs are designed to trade on an exchange like ordinary shares, but unlike a company’s shares, an ETF’s fair value is directly tied to the value of its underlying basket of holdings, which changes continuously throughout the trading day. Market makers exist to bridge the gap between this constantly-updating fair value and the practical need for investors to be able to buy or sell units instantly on the exchange. By continuously posting both a bid price (what they’ll pay to buy) and an offer price (what they’ll charge to sell), market makers ensure there’s almost always a counterparty available, which is what allows an ETF to trade with reasonable liquidity even if the specific fund doesn’t have huge daily retail trading volume — a common situation for many SGX-listed ETFs compared to larger US-listed counterparts.
How Does Market Maker Work in Singapore?
A market maker uses sophisticated pricing models that track the ETF’s underlying basket of securities in near real-time, allowing it to continuously update its bid and offer quotes as the underlying holdings’ prices move. If an investor wants to sell 1,000 units of an ETF and there’s no matching buyer at that exact moment, the market maker steps in to buy those units at its posted bid price, temporarily taking on the position. To manage the risk of holding that inventory, the market maker can either offset it against other client orders, hedge using related instruments, or — if it also functions as an Authorised Participant — bundle up enough units to redeem them directly with the ETF issuer for the underlying basket of securities, effectively closing out the position. This constant activity of quoting, absorbing imbalances, and rebalancing is what keeps the ETF’s traded price tightly tethered to its NAV throughout the day.
Market Maker Example
An SGX-listed ETF tracking a basket of Asian bonds has relatively low daily trading volume compared to a popular S&P 500 ETF. Its designated market maker continuously posts bid and offer quotes throughout the trading session — say, a $0.02 spread around fair value — so that even an investor placing a modest S$5,000 order can execute promptly at a reasonable price, rather than facing a wide, illiquid spread or being unable to trade at all.
Advantages of Market Maker
- Enables reliable liquidity — market makers allow investors to buy and sell ETF units throughout the trading day without needing to wait for a matching counterparty.
- Keeps ETF prices close to fair value — continuous quoting activity anchors the traded price to the underlying basket’s NAV, reducing the chance of large, persistent mispricing.
- Particularly valuable for less-traded ETFs — smaller or niche SGX-listed ETFs benefit disproportionately from market maker presence, since they’d otherwise struggle with thin natural trading interest.
- Reduces price impact for retail-sized trades — because market makers absorb order imbalances, an individual investor’s trade is less likely to move the ETF’s price significantly.
Risks and Limitations
- Spreads can widen during volatile periods — market makers may widen their bid-ask quotes during high volatility or market stress to manage their own risk, increasing trading costs for investors at exactly the moments liquidity matters most.
- Not a guarantee against all liquidity risk — if a market maker withdraws or a fund loses its designated market maker, an ETF’s tradability on the exchange can deteriorate meaningfully.
- Underlying market gaps can still cause mispricing — if the ETF’s underlying holdings trade in a market that’s closed or illiquid at the time (e.g. a US-holdings ETF trading on SGX during Asian hours), market makers price based on estimates, which can diverge more from true fair value.
- Investors rarely interact with market makers directly — retail investors typically don’t see or choose their market maker, so it’s worth checking an ETF’s average trading volume and typical spread as an indirect signal of market-making quality before investing.
Market Maker vs Authorised Participant (ETF)
These two roles are related but distinct parts of how ETFs maintain liquidity and fair pricing.
| Aspect | A | B |
|---|---|---|
| Primary function | Continuous two-way quoting on the exchange | Creating/redeeming large blocks of ETF units with the fund manager |
| Who interacts with them | Indirectly, every investor trading on the exchange | Institutional players; not directly accessed by retail investors |
| How they profit | Bid-ask spread from continuous quoting | Arbitrage between ETF market price and underlying NAV |
| Can one firm do both? | Yes, and often does in practice | Yes, and often does in practice |
| Impact on retail investors | Enables buying/selling at a fair price throughout the day | Keeps the ETF’s price anchored to NAV over the longer run |
The Bottom Line
Market makers are the largely invisible infrastructure that lets you buy or sell an ETF on SGX at a fair price whenever markets are open, by continuously quoting both sides of the trade and absorbing short-term imbalances — their presence, or absence, is a meaningful factor behind why some ETFs trade with tighter, more reliable spreads than others.