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WML Convertible Bond Conversion Option Derivative (Tables)
9 Months Ended
Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Valuation Techniques for Embedded Derivative
The following table sets forth the inputs to the lattice models that were used to value the embedded derivatives:

September 30, 2023March 2, 2023 (Pricing date)
WML stock priceHK$7.50 HK$8.08 
Estimated volatility33.6 %26.0 %
Risk-free interest rate4.4 %4.2 %
Expected term (years)5.4 6.0 
Dividend yield0.0 %0.0 %