BiyaPay's Hong Kong stock options trading function is officially launched

Dear BiyaPay users:

BiyaPay platform’s Hong Kong stock options trading function has been officially launched in June 2025! Hong Kong stock options are standardized derivative contracts launched by the Hong Kong Stock Exchange (HKEX). Investors can flexibly participate in the fluctuations of the Hong Kong stock market by buying bullish/put options or selling option contracts, and efficiently manage investment risks.

Core features and rules

1. Product features
   1. Flexible call-over: Supports European Style Option (call-over on expiration date) and American Style Option (call-over on any trading day within the valid period).
   2. Rich targets: covering popular Hong Kong stock options such as Tencent and Xiaomi, contract details are subject to exchange announcements.
   3. Transparent mechanism: Automatic call-over upon expiration (within the price level ≥ exercise price 1.5%), avoiding manual operation omissions.
2. Trading hours (Beijing time)

Half-day trading is applicable on Christmas, New Year’s Day and Lunar New Year’s Eve, see HKEx Calendar .

1. Contract elements
   1. Minimum unit: 1 contract (corresponding to the number of shares = number of shares per lot × multiple of buying and selling units, such as Xiaomi contract is 200 shares/lot × 5 times = 1000 shares).
   2. Quotation unit: Most options have a minimum price change of HKD 0.01; 6 types of bank/tower options are HKD 0.001 (such as Bank of China, ICBC, etc.).
   3. Position limit: The upper limit of one-way position of the same underlying asset is 50,000 - 250,000 (dynamically adjusted according to the risk control requirements of the exchange).
2. Expense description
   1. Trading Fee = Premium × 0.03% + Fixed Fee (3.00/1 HKD 00/0.50 per option).
   2. Call-over handling fee: calculated at 0.2% of the call-over amount (minimum HKD 3), charged during the call-over period.

Fees are detailed in the rate statement .

Trading operation guidelines

1. Grant permission Enter the BiyaPay App → [Hong Kong Stock] → [Options], complete the risk assessment and sign the agreement to activate.
2. Four types of trading strategies

1. Call-over and settlement
   1. Buyer: In-the-money options expire automatically call-over (margin sufficient), otherwise void.
   2. Seller: May be assigned call-over, need to freeze full deposit in advance.
   3. Settlement: Fund settlement completed on T + 1 day, stock transfer completed on T + 2 day.

Risk Warning

1. Liquidity Risk: On the last trading day, options with less than 1.5% in-price will be invalidated due to insufficient liquidity and inability to position squaring.
2. Margin monitoring: Call-over or forced liquidation may trigger margin supplementation. Please ensure that your account has sufficient funds.
3. The impact of company actions: When the underlying stock is split or dividends are distributed, the option code, exercise price, and contract quantity will be adjusted (subject to the announcement of the Hong Kong Stock Exchange).

Immediate experience: Log in to the BiyaPay App → [Trading] → [Hong Kong Stocks] → [Options], select Hong Kong stock targets to start trading!

About BiyaPay

BiyaPay, as the world’s first multi-asset trading wallet, has now integrated real-time exchange between fiat and digital currencies, can participate in the US/Hong Kong stock market with USDT, has zero transaction fees for spot/contract Maker, B2C compliance withdrawal channel, safe withdrawal without freezing cards, effectively avoiding the risk of fund freezing in traditional OTC/C2C transactions, and providing practical solutions for investors.

If you have any questions, please contact customer service.

• Customer service email : service@biya pay.com
• Telegram：@biyapay001
• Telegram Chinese group : Click to join

BiyaPay team

June 2025