Stock Function
Stock AccountStock Fee StructureFunds RelatedStock TransferIPO SubscriptionUS Stock TradingHK Stock TradingMargin TradingOptionsPositions and P&LRisk and Risk CheckCorporate ActionsQualifications and SecurityUS Stock Trading FAQs
What are options?
Options are rights to buy or sell specific commodities at specific prices at specific future times. Options trading features flexibility, cost efficiency, and risk management.
Published on 2026-02-11
What are the types of options?
Options can be classified by rights into call and put options, by delivery time into American and European options, and by underlying assets into stock options, index options, etc.
Published on 2026-02-12
Introduction to Important Option Terms
Important option terms include: strike price (exercise price), expiration date (exercise date), open interest, contract unit, settlement type, etc.
Published on 2026-02-12
Introduction and Characteristics of Zero-Days-to-Expiration (0DTE) Options
Zero-Days-to-Expiration (0DTE) options expire the same day, with high liquidity and active trading. Time decay is rapid, with out-of-the-money options becoming worthless and in-the-money options losing extrinsic value. There’s a risk of early exercise, requiring proper position management.
Published on 2026-02-12
What are the common options indicators?
Common options indicators, including break-even point, premium rate, implied volatility, intrinsic value, time value, Delta, Gamma, Theta, Vega, and Rho, measure option price, volatility, time decay, sensitivity, and risk management.
Published on 2026-02-12
What is the process for options trading?
On both the App and Web platforms, users can search for a stock via the 【Market】 page, go to the chart, select the option, and click buy or sell to trade.
Published on 2026-02-12
What are the trading hours for U.S. stock options?
U.S. stock options trade only from 09:30–16:00 ET. Trading hours can be viewed on the Trade page.
Published on 2026-02-12
What are the trading hours for Hong Kong stock options?
Hong Kong stock options trading hours: Trading is only supported from 09:30–12:00 and 13:00–16:00.
Published on 2026-02-12
What are the trading fees for U.S. stock options?
U.S. stock options fees can be viewed on the Trade page.
Published on 2026-02-12
What are the trading fees for Hong Kong stock options?
Hong Kong stock options fees can be viewed on the Trade page.
Published on 2026-02-12
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BIYA GLOBAL LLC is a licensed entity registered with the U.S. Securities and Exchange Commission (SEC No.: 802-127417); a certified member of the Financial Industry Regulatory Authority (FINRA) (Central Registration Depository CRD No.: 325027); regulated by the Financial Industry Regulatory Authority (FINRA) and the U.S. Securities and Exchange Commission (SEC).
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BIYA GLOBAL LLC is registered with the Financial Crimes Enforcement Network (FinCEN), an agency under the U.S. Department of the Treasury, as a Money Services Business (MSB), with registration number 31000218637349, and regulated by the Financial Crimes Enforcement Network (FinCEN).
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