The Singapore Stock Exchange is the primary exchange in Singapore.

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Currency: Singapore Dollar (SGD)
Time Zone: UTC +08:00

Trading Hours & Holiday Calendar

More information on securities trading at the SGX can be found on the Trading & Settlement page.

• Limit Buy/Sell/Short (DAY/IOC)
• Market Buy/Sell/Short (DAY/IOC)

• Lot Size: 1000 shares.
• Tick Size: defined by product type and price. The tick size for equities is listed in the following table. For information on other products, see the Trading & Settlement page.

• Short Sale Rules: short sell orders must be marked appropriately. For more information, see Chapter 8A of the Rulebooks.

The opening and closing market phases of the Singapore Stock Exchange are described in detail in Practice Note 8.2.1, which can be found under the rules of the exchange on the SGX-ST Rules page.

Orders can be entered from 08:30:00 to 08:59:00 (pre-open), followed by a non-cancellation period from 08:59:00 to 09:00:00, after which order matching will occur and the market will open.

• The Opening Routine is a 30-minute session before normal trading starts at 09:00 hours. It comprises the Pre-Open Phase and the Non-Cancel Phase.
• Pre-Open Phase (08:30 to 08:58–59 hours)
  • Orders can be entered, modified or withdrawn in the ready and unit share markets.
  • The bid (offer) can be higher (lower) than the offer (bid).
  • No matching of orders.
  • This phase will end randomly at any time from 08:58 to 08:59 hours.
• Non-Cancel Phase (08:58–59 to 09:00 hours)
  • This phase will begin immediately after the Pre-Open Phase ends, which may be at any time from 08:58 to 08:59 hours.
    • No input, amendment and withdrawal of orders.
  • Orders that can be matched are matched at a single price computed based on an algorithm set by SGX-ST. The computed price will be the opening price for the day.
  • Unmatched orders are carried forward into the morning trading session.

Orders that can be matched are matched at a single price computed based on an algorithm set by SGX-ST. The computed price will be the closing price for the day.

Note: in PPro8, the Flatten button does not work in the closing auction for this market. Instead, orders can be flattened only by manually sending a limit order that is not too aggressive, i.e., set close to the market price.

The methodology for computing the single price is as follows:

• a) A bid (offer) may be executed at a lower (higher) price.
• b) The cumulative bid (offer) volume at any price is the bid (offer) quantity at that price plus the sum of bid (offer) quantities at all higher (lower) prices.
• c) Sell (buy) pressure occurs when the cumulative offer (bid) volume is greater than the cumulative bid (offer) volume at a particular price. Zero pressure occurs when the cumulative offer volume is equal to the cumulative bid volume at a particular price.
• d) The tradable volume at any price is the lower of the cumulative bid or offer volume.
• e) The price overlap is the range of prices where tradable volumes are possible.
• f) The equilibrium is the price range within the price overlap where buy pressure changes to sell pressure (see Example 1). The computed price is either one of the following:—
  • i. The price within the equilibrium that has the largest trade volume, or
  • ii. If there is no unique price, the average of all prices within the equilibrium with the maximum trade volume, or
  • iii. The average is rounded to the next multiple of the minimum price multiple for this security or Futures Contract in the direction of the last traded price, or
  • iv. If there is no last traded price, the average price is rounded to the next lower price multiple.
• g) If there is only buy or sell pressure within the price overlap, or if there is zero buy and sell pressure within the price overlap, or if the buy pressure and sell pressure are separated by a range of prices within the price overlap with zero pressure, the computing mechanism can be found in reference guide below

Auction Periods

1. Pre-Close Phase (17:00 - 17:04-05)

All unmatched Orders can be entered, reduced in quantity or withdrawn. No matching will take place.

2. Order matching (17:04-05 - 17:06)

No order entry and amendment or withdrawn are allowed in this phase. All existing orders are matched at a single price according to the algorithm set by SGX-ST. All unmatched orders following the non-cancel phase at the close of trading will lapse. The computed single price will be the closing price of the day

Auction Order Types: Limit order with TIF set as DAY

For more information on the auction mechanisms on the Singapore Stock Exchange, see the Rulebooks, SGX-ST Rules, Practice Note 8.2.1.

• Market Guides