On the Hong Kong Stock Exchange (HKEX), the minimum trading unit is defined as one lot, but the number of shares per lot varies by stock. Depending on the security, a lot can range from as few as 10 shares to as many as 100,000 shares. Most lots typically fall within a price range of HK$1,000 to HK$10,000.
Currently, odd lot trading is not available on the HKEX. However, if you need to close an existing odd lot position, you can request assistance from our Client Success Team.
Minimum bid size and forced order range:
The minimum bid size (or price increment) for each stock depends on its share price and can range from HK$0.001 to HK$5. The forced order range is set at ±9 spreads from the current price at the time the order is placed.
| Price Range (HKD) | Minimum Bid Size (HKD) |
|---|---|
| 0.01 – 0.25 | 0.001 |
| Over 0.25 – 0.50 | 0.005 |
| Over 0.50 – 10.00 | 0.010 |
| Over 10.00 – 20.00 | 0.010 |
| Over 20.00 – 50.00 | 0.020 |
| Over 50.00 – 100.00 | 0.050 |
| Over 100.00 – 200.00 | 0.100 |
| Over 200.00 – 500.00 | 0.200 |
| Over 500.00 – 1,000.00 | 0.500 |
| Over 1,000.00 – 2,000.00 | 1.000 |
| Over 2,000.00 – 5,000.00 | 2.000 |
| Over 5,000.00 – 9,995.00 | 5.000 |
What is the new “4% Rule” for price spreads?
The passive price spread limit is loosening: orders can be forced wider.
Buy Orders:
- Upper limit: 9 ticks up (unchanged).
- Lower limit: 24 ticks down or 4% down from last ask, whichever is lower (during continuous trading).
Sell Orders:
- Upper limit: 24 ticks up or 4% up from last bid, whichever is higher (during continuous trading).
- Lower limit: 9 ticks down (unchanged).
How will the minimum bid size for Price Tick Group 01 change?
- Applies to all securities (except debt securities, options, ETFs, and structured products).
- For prices $10.01 to $20.00: new minimum spread is 0.01 (down from 0.02).
- For prices $20.01 to $50.00: new minimum spread is 0.02 (down from 0.05)
For more information about HKEX trading rules, you can refer to the HKEX website.
