From 5 October 2026, SGX will reduce the standard board lot for eligible instruments priced above S$10 to S$100 from 100 units to 10, and for those above S$100 from 100 units to one. The first change covers selected counters and does not make every SGX security a one-share board lot.
This guide is written for a retail investor planning to buy a higher-priced sgx counter. It resolves a specific job: recalculate minimum trade size and transaction-cost drag before and after the 5 October implementation. Start with the branch that matches the facts, then keep the supporting record until the transaction, visit, filing or safety task is complete.
Choose the branch before acting
| Your situation | Next move |
|---|---|
| Eligible counter priced above S$10 and up to S$100 | Model a 10-unit standard lot after implementation |
| Eligible counter priced above S$100 | Model a one-unit standard lot after implementation |
| Counter is not in the initial eligible set | Use its live board lot rather than the price alone |
| Holding is below one live board lot | Check the broker’s unit-share market access and total fees |
Do not combine branches merely because two labels sound similar. The correct branch depends on the actual person, date, property, product, service or location involved. If one fact is unknown, pause at that row and verify it instead of carrying an assumption into the rest of the task.
Check the implementation date
The announcement creates a future change, not an immediate August trading rule. The current position is set out by SGX board lot implementation announcement.
Use the live security details on the order date and do not pre-empt the 5 October setting. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Check eligibility, not price alone
SGX specifies an initial group and instrument scope, with later quarterly reviews. The supporting detail is available from SGX-ST Rule 8.3 orders.
Confirm the counter rather than inferring a lot size from yesterday’s closing price. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Recalculate minimum outlay
Minimum gross consideration is board-lot units multiplied by share price.
Add commission, platform minimum, clearing fees and GST to the order model. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Measure fee drag
A smaller lot can lower cash outlay while fixed minimum fees become a larger percentage of the trade.
Compare total costs as a percentage at 100, 10 and one unit. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Understand odd lots
SGX rules allow less than one board lot to be matched in the unit share market, subject to broker access and liquidity.
Check spreads, depth and broker routing before assuming an odd lot will execute like a standard lot. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Avoid portfolio distortion
Lower entry cost does not make one high-priced stock safer or more diversified.
Set position limits from the portfolio plan rather than from the new minimum. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Review corporate actions
Rights issues, consolidations and transfers can still create holdings that do not match the standard lot.
Retain the corporate-action statement and confirm the applicable market before entering an order. Add the relevant date, document, amount, location or responsible person to the same record. That makes the choice reproducible and prevents a broad rule from being applied to the wrong facts.
Worked example
At S$25 a share, a 100-unit lot requires S$2,500 gross while a 10-unit lot requires S$250. If all-in minimum fees were S$10, fee drag would be 0.4% versus 4% before spread and price movement. The fee is hypothetical; use the broker’s actual schedule.
The example is a calculation or planning model, not a promise about an individual outcome. Replace every example input with the live figure, document, route condition or case fact. Keep intermediate workings, because rounding too early or skipping one stage can produce an answer that looks plausible but cannot be checked.
Build one usable decision file
Create a short record with four columns: fact, evidence, effect on the decision and next owner. Put the controlling rule beside the particular fact it governs. A page about the right subject is not enough if it does not contain the number, deadline, eligibility test or operational detail used in the decision.
Save a dated copy or acknowledgement when the task is time-sensitive. If another person needs to continue the work, they should be able to see what was checked, what remains uncertain and which official channel can resolve it. This is especially important where contracts, money, employment, safety or personal data are involved.
Final check
- Confirm the trade date
- Check the live counter board lot
- Calculate gross consideration
- Add all trading fees
- Check standard or unit-share market
- Review liquidity and spread
- Keep the contract note
This is not a recommendation to trade. SGX settings, prices, broker access and fees can change, and investments can lose value.
Related LBRD guides
You may also need to choose the custody and order route. For the next adjacent task, handle a separate CDP transfer task.
