firms Unlike the other Greeks, implied volatility was unknown. 6 t Implied volatility Realized volatility t + 1 • It was calculated by reverse engineer process from the option price at time t. • Implied

]St0 HC = Ct1−[Delta]St1 DeltaBS = f ( St0, K, T, r, σ ) Historical statistic : Standard deviation Implied statistic : Min ∑ (Cmarket – C theoretical) 2 DeltaWM = f ( St0, K, T, r, μ, σ* ) σ* = f (r, μ

agreements with TOT, effective since 1-Mar-18, on co- utilizing the 2100MHz spectrum. This resulted in AIS having in total 55MHz spectrum in both low- and high-band, which ensures AIS’s capability to provide

convergence package (FMC), has decently captured market demand, supported by an active outbound approach to reach high-valued mobile customers. Following our intention to win homes, standalone broadband ARPU

share sale transaction for ordinary shares in a wholly owned subsidiary of SHR to Wai Eco World Developer Pte. Ltd (“WERW”) in accordance with Joint Venture Agreement to operate and develop a high-end

mid  to  high‐e dling packages o to  serve  grow ice.  Following  t ket and com ompetitive  land stpaid  segment arly Apr‐17, un ity of data expe here are some h broadband ma customers towa mained

, and represented 2.7% of total service revenue. Total subscribers stood at 481,500 with a net addition of 35,600 in 3Q17. The net addition slowed down due to the launch of new measures to target high

and strengthen 4G 5G network based on 2600MHz has been rolled out in high data usage area in 77 cities with over 4,000 base stations, and already met NBTC roll out requirement of 50% of EEC area. By end

selective areas. Discounts were offered in mid- to high-end packages subscription with an aim to improve medium term ARPU. Fibre footprints were expanded further to capture new demand outside Bangkok and key

PRI signatories in 2021 New high record of USD 121 trillion collective AUM The rise of sustainable investing & the growing shift to intangible. Thailand perspective: Source: PRI report, Morning Star