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

1 2017 MD&A Advanced Info Service Plc. Executive Summary In 2017, mobile business improved from stronger 4G positioning amidst competitive environment. Competitive landscape remained challenging in

challenging in 1Q19. In strategic areas, aggressive price plans and handset campaigns were launched, especially in prepaid, in which AIS was competitive to preserve scale. As a result, mobile revenue grew 1.1

pricing environment remained challenging to uplift ARPU as some low price unlimited data remained i.e. Bt200 for unlimited data at speed of 4Mbps. In addition, the NBTC introduced two measures to help

PowerPoint Presentation 1 CLIMATE EMERGENCY NATURE IN CRISIS MOUNTING INEQUALITY A SIMPLIFIED SUSTAINABILITY FOCUS     2  1.5 (Challenging on 2DS (2 degree scenario) target  Best target for

ไดรบัอนุญาต ตองจัดใหมีการเปดเผยขอมูลเพื่อเปรียบเทียบคาความผันผวนแฝง (implied volatility) กับคาความผันผวนในอดีต (historical volatility) บน website ของผูออก DW โดยเปนการเปดเผย อยางตอเนื่อง

ed  challenging  by natural  tre pricing was  intr bscribers where es continued to ators  continued ology. Although ctive discount  packages has b ent at affordabl uiring  quality  s net addition  im

plans to suit customer’s usage pattern. Prepaid competition, however, remained challenging with offering of large data allowance on low-tier package during the quarter to date. AIS selectively offered

amount of Baht 9,700 million with rating A- through private placement offering with over subscription 2 times amidst challenging market condition. The Debentures have a term of 2-10 years with effective